androidx.compose.material

Material Design alert dialog

@Composable
fun AlertDialog(
    onDismissRequest: () -> Unit,
    buttons: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    title: (@Composable () -> Unit)? = null,
    text: (@Composable () -> Unit)? = null,
    shape: Shape = MaterialTheme.shapes.medium,
    backgroundColor: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(backgroundColor),
    properties: DialogProperties = DialogProperties()
): Unit

Alert dialogs interrupt users with urgent information, details, or actions.

Dialogs
image

This function can be used to fully customize the button area, e.g. with:

import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.material.AlertDialog
import androidx.compose.material.Button
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val openDialog = remember { mutableStateOf(true) }

if (openDialog.value) {
    AlertDialog(
        onDismissRequest = { openDialog.value = false },
        title = { Text(text = "Title") },
        text = {
            Text(
                "This area typically contains the supportive text " +
                    "which presents the details regarding the Dialog's purpose."
            )
        },
        buttons = {
            Row(
                modifier = Modifier.padding(all = 8.dp),
                horizontalArrangement = Arrangement.Center,
            ) {
                Button(
                    modifier = Modifier.fillMaxWidth(),
                    onClick = { openDialog.value = false },
                ) {
                    Text("Dismiss")
                }
            }
        },
    )
}

Parameters
`onDismissRequest: () -> Unit`	Executes when the user tries to dismiss the Dialog by clicking outside or pressing the back button. This is not called when the dismiss button is clicked.
`buttons: @Composable () -> Unit`	Function that emits the layout with the buttons.
`modifier: Modifier = Modifier`	Modifier to be applied to the layout of the dialog.
`title: (@Composable () -> Unit)? = null`	The title of the Dialog which should specify the purpose of the Dialog. The title is not mandatory, because there may be sufficient information inside the `text`. Provided text style will be `Typography.subtitle1`.
`text: (@Composable () -> Unit)? = null`	The text which presents the details regarding the Dialog's purpose. Provided text style will be `Typography.body2`.
`shape: Shape = MaterialTheme.shapes.medium`	Defines the Dialog's shape.
`backgroundColor: Color = MaterialTheme.colors.surface`	The background color of the dialog.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this dialog to its children.
`properties: DialogProperties = DialogProperties()`	Typically platform specific properties to further configure the dialog.

AlertDialog

Cmn android

Material Design alert dialog

@Composable
fun AlertDialog(
    onDismissRequest: () -> Unit,
    confirmButton: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    dismissButton: (@Composable () -> Unit)? = null,
    title: (@Composable () -> Unit)? = null,
    text: (@Composable () -> Unit)? = null,
    shape: Shape = MaterialTheme.shapes.medium,
    backgroundColor: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(backgroundColor),
    properties: DialogProperties = DialogProperties()
): Unit

Alert dialogs interrupt users with urgent information, details, or actions.

Dialogs
image

The dialog will position its buttons based on the available space. By default it will try to place them horizontally next to each other and fallback to horizontal placement if not enough space is available. There is also another version of this composable that has a slot for buttons to provide custom buttons layout.

Sample of dialog:

import androidx.compose.material.AlertDialog
import androidx.compose.material.Button
import androidx.compose.material.Text
import androidx.compose.material.TextButton
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

val openDialog = remember { mutableStateOf(true) }

if (openDialog.value) {
    AlertDialog(
        onDismissRequest = {
            // Dismiss the dialog when the user clicks outside the dialog or on the back
            // button. If you want to disable that functionality, simply use an empty
            // onCloseRequest.
            openDialog.value = false
        },
        title = { Text(text = "Title") },
        text = {
            Text(
                "This area typically contains the supportive text " +
                    "which presents the details regarding the Dialog's purpose."
            )
        },
        confirmButton = {
            TextButton(onClick = { openDialog.value = false }) { Text("Confirm") }
        },
        dismissButton = {
            TextButton(onClick = { openDialog.value = false }) { Text("Dismiss") }
        },
    )
}

Parameters
`onDismissRequest: () -> Unit`	Executes when the user tries to dismiss the Dialog by clicking outside or pressing the back button. This is not called when the dismiss button is clicked.
`confirmButton: @Composable () -> Unit`	A button which is meant to confirm a proposed action, thus resolving what triggered the dialog. The dialog does not set up any events for this button so they need to be set up by the caller.
`modifier: Modifier = Modifier`	Modifier to be applied to the layout of the dialog.
`dismissButton: (@Composable () -> Unit)? = null`	A button which is meant to dismiss the dialog. The dialog does not set up any events for this button so they need to be set up by the caller.
`title: (@Composable () -> Unit)? = null`	The title of the Dialog which should specify the purpose of the Dialog. The title is not mandatory, because there may be sufficient information inside the `text`. Provided text style will be `Typography.subtitle1`.
`text: (@Composable () -> Unit)? = null`	The text which presents the details regarding the Dialog's purpose. Provided text style will be `Typography.body2`.
`shape: Shape = MaterialTheme.shapes.medium`	Defines the Dialog's shape
`backgroundColor: Color = MaterialTheme.colors.surface`	The background color of the dialog.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this dialog to its children.
`properties: DialogProperties = DialogProperties()`	Typically platform specific properties to further configure the dialog.

BackdropScaffold

Cmn

@Composable
fun BackdropScaffold(
    appBar: @Composable () -> Unit,
    backLayerContent: @Composable () -> Unit,
    frontLayerContent: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    scaffoldState: BackdropScaffoldState = rememberBackdropScaffoldState(Concealed),
    snackbarHost: @Composable (SnackbarHostState) -> Unit = { SnackbarHost(it) },
    gesturesEnabled: Boolean = true,
    peekHeight: Dp = BackdropScaffoldDefaults.PeekHeight,
    headerHeight: Dp = BackdropScaffoldDefaults.HeaderHeight,
    persistentAppBar: Boolean = true,
    stickyFrontLayer: Boolean = true,
    backLayerBackgroundColor: Color = MaterialTheme.colors.primary,
    backLayerContentColor: Color = contentColorFor(backLayerBackgroundColor),
    frontLayerShape: Shape = BackdropScaffoldDefaults.frontLayerShape,
    frontLayerElevation: Dp = BackdropScaffoldDefaults.FrontLayerElevation,
    frontLayerBackgroundColor: Color = MaterialTheme.colors.surface,
    frontLayerContentColor: Color = contentColorFor(frontLayerBackgroundColor),
    frontLayerScrimColor: Color = BackdropScaffoldDefaults.frontLayerScrimColor
): Unit

Material Design backdrop

A backdrop appears behind all other surfaces in an app, displaying contextual and actionable content.

Backdrop
image

This component provides an API to put together several material components to construct your screen. For a similar component which implements the basic material design layout strategy with app bars, floating action buttons and navigation drawers, use the standard Scaffold. For similar component that uses a bottom sheet as the centerpiece of the screen, use BottomSheetScaffold.

Either the back layer or front layer can be active at a time. When the front layer is active, it sits at an offset below the top of the screen. This is the peekHeight and defaults to 56dp which is the default app bar height. When the front layer is inactive, it sticks to the height of the back layer's content if stickyFrontLayer is set to true and the height of the front layer exceeds the headerHeight, and otherwise it minimizes to the headerHeight. To switch between the back layer and front layer, you can either swipe on the front layer if gesturesEnabled is set to true or use any of the methods in BackdropScaffoldState.

The scaffold also contains an app bar, which by default is placed above the back layer's content. If persistentAppBar is set to false, then the backdrop will not show the app bar when the back layer is revealed; instead it will switch between the app bar and the provided content with an animation. For best results, the peekHeight should match the app bar height. To show a snackbar, use the method showSnackbar of BackdropScaffoldState.snackbarHostState.

A simple example of a backdrop scaffold looks like this:

import androidx.compose.foundation.clickable
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.material.BackdropScaffold
import androidx.compose.material.BackdropValue
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.ListItem
import androidx.compose.material.Text
import androidx.compose.material.TopAppBar
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Close
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.icons.filled.Menu
import androidx.compose.material.rememberBackdropScaffoldState
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp

val scope = rememberCoroutineScope()
val selection = remember { mutableStateOf(1) }
val scaffoldState = rememberBackdropScaffoldState(BackdropValue.Concealed)
LaunchedEffect(scaffoldState) { scaffoldState.reveal() }
BackdropScaffold(
    scaffoldState = scaffoldState,
    appBar = {
        TopAppBar(
            title = { Text("Backdrop scaffold") },
            navigationIcon = {
                if (scaffoldState.isConcealed) {
                    IconButton(onClick = { scope.launch { scaffoldState.reveal() } }) {
                        Icon(Icons.Default.Menu, contentDescription = "Localized description")
                    }
                } else {
                    IconButton(onClick = { scope.launch { scaffoldState.conceal() } }) {
                        Icon(Icons.Default.Close, contentDescription = "Localized description")
                    }
                }
            },
            actions = {
                var clickCount by remember { mutableStateOf(0) }
                IconButton(
                    onClick = {
                        // show snackbar as a suspend function
                        scope.launch {
                            scaffoldState.snackbarHostState.showSnackbar(
                                "Snackbar #${++clickCount}"
                            )
                        }
                    }
                ) {
                    Icon(Icons.Default.Favorite, contentDescription = "Localized description")
                }
            },
            elevation = 0.dp,
            backgroundColor = Color.Transparent,
        )
    },
    backLayerContent = {
        LazyColumn {
            items(if (selection.value >= 3) 3 else 5) {
                ListItem(
                    Modifier.clickable {
                        selection.value = it
                        scope.launch { scaffoldState.conceal() }
                    },
                    text = { Text("Select $it") },
                )
            }
        }
    },
    frontLayerContent = {
        Text("Selection: ${selection.value}")
        LazyColumn {
            items(50) {
                ListItem(
                    text = { Text("Item $it") },
                    icon = {
                        Icon(
                            Icons.Default.Favorite,
                            contentDescription = "Localized description",
                        )
                    },
                )
            }
        }
    },
)

Parameters
`appBar: @Composable () -> Unit`	App bar for the back layer. Make sure that the `peekHeight` is equal to the height of the app bar, so that the app bar is fully visible. Consider using `TopAppBar` but set the elevation to 0dp and background color to transparent as a surface is already provided.
`backLayerContent: @Composable () -> Unit`	The content of the back layer.
`frontLayerContent: @Composable () -> Unit`	The content of the front layer.
`modifier: Modifier = Modifier`	Optional `Modifier` for the root of the scaffold.
`scaffoldState: BackdropScaffoldState = rememberBackdropScaffoldState(Concealed)`	The state of the scaffold.
`snackbarHost: @Composable (SnackbarHostState) -> Unit = { SnackbarHost(it) }`	The component hosting the snackbars shown inside the scaffold.
`gesturesEnabled: Boolean = true`	Whether or not the backdrop can be interacted with by gestures.
`peekHeight: Dp = BackdropScaffoldDefaults.PeekHeight`	The height of the visible part of the back layer when it is concealed.
`headerHeight: Dp = BackdropScaffoldDefaults.HeaderHeight`	The minimum height of the front layer when it is inactive.
`persistentAppBar: Boolean = true`	Whether the app bar should be shown when the back layer is revealed. By default, it will always be shown above the back layer's content. If this is set to `false`, the back layer will automatically switch between the app bar and its content with an animation.
`stickyFrontLayer: Boolean = true`	Whether the front layer should stick to the height of the back layer.
`backLayerBackgroundColor: Color = MaterialTheme.colors.primary`	The background color of the back layer.
`backLayerContentColor: Color = contentColorFor(backLayerBackgroundColor)`	The preferred content color provided by the back layer to its children. Defaults to the matching content color for `backLayerBackgroundColor`, or if that is not a color from the theme, this will keep the same content color set above the back layer.
`frontLayerShape: Shape = BackdropScaffoldDefaults.frontLayerShape`	The shape of the front layer.
`frontLayerElevation: Dp = BackdropScaffoldDefaults.FrontLayerElevation`	The elevation of the front layer.
`frontLayerBackgroundColor: Color = MaterialTheme.colors.surface`	The background color of the front layer.
`frontLayerContentColor: Color = contentColorFor(frontLayerBackgroundColor)`	The preferred content color provided by the back front to its children. Defaults to the matching content color for `frontLayerBackgroundColor`, or if that is not a color from the theme, this will keep the same content color set above the front layer.
`frontLayerScrimColor: Color = BackdropScaffoldDefaults.frontLayerScrimColor`	The color of the scrim applied to the front layer when the back layer is revealed. If the color passed is `Color.Unspecified`, then a scrim will not be applied and interaction with the front layer will not be blocked when the back layer is revealed.

BackdropScaffoldState

Cmn

Added in 1.7.0

fun BackdropScaffoldState(
    initialValue: BackdropValue,
    density: Density,
    animationSpec: AnimationSpec<Float> = BackdropScaffoldDefaults.AnimationSpec,
    confirmValueChange: (BackdropValue) -> Boolean = { true },
    snackbarHostState: SnackbarHostState = SnackbarHostState()
): BackdropScaffoldState

State of the persistent bottom sheet in BackdropScaffold.

Parameters
`initialValue: BackdropValue`	The initial value of the state.
`density: Density`	The density that this state can use to convert values to and from dp.
`animationSpec: AnimationSpec<Float> = BackdropScaffoldDefaults.AnimationSpec`	The default animation that will be used to animate to a new state.
`confirmValueChange: (BackdropValue) -> Boolean = { true }`	Optional callback invoked to confirm or veto a pending state change.
`snackbarHostState: SnackbarHostState = SnackbarHostState()`	The `SnackbarHostState` used to show snackbars inside the scaffold.

Badge

Cmn

@Composable
fun Badge(
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.error,
    contentColor: Color = contentColorFor(backgroundColor),
    content: (@Composable RowScope.() -> Unit)? = null
): Unit

Badge is a component that can contain dynamic information, such as the presence of a new notification or a number of pending requests. Badges can be icon only or contain short text.

See BadgedBox for a top level layout that will properly place the badge relative to content such as text or an icon.

Parameters
`modifier: Modifier = Modifier`	optional `Modifier` for this item
`backgroundColor: Color = MaterialTheme.colors.error`	the background color for the badge
`contentColor: Color = contentColorFor(backgroundColor)`	the color of label text rendered in the badge
`content: (@Composable RowScope.() -> Unit)? = null`	optional content to be rendered inside the badge

BadgedBox

Cmn

Added in 1.1.0

@Composable
fun BadgedBox(
    badge: @Composable BoxScope.() -> Unit,
    modifier: Modifier = Modifier,
    content: @Composable BoxScope.() -> Unit
): Unit

A BadgeBox is used to decorate content with a badge that can contain dynamic information, such as the presence of a new notification or a number of pending requests. Badges can be icon only or contain short text.

A common use case is to display a badge with bottom navigation items. For more information, see Bottom Navigation

A simple icon with badge example looks like:

import androidx.compose.material.Badge
import androidx.compose.material.BadgedBox
import androidx.compose.material.BottomNavigation
import androidx.compose.material.BottomNavigationItem
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.contentDescription
import androidx.compose.ui.semantics.semantics

BottomNavigation {
    BottomNavigationItem(
        icon = {
            BadgedBox(
                badge = {
                    Badge {
                        val badgeNumber = "8"
                        Text(
                            badgeNumber,
                            modifier =
                                Modifier.semantics {
                                    contentDescription = "$badgeNumber new notifications"
                                },
                        )
                    }
                }
            ) {
                Icon(Icons.Filled.Favorite, contentDescription = "Favorite")
            }
        },
        selected = false,
        onClick = {},
    )
}

Parameters
`badge: @Composable BoxScope.() -> Unit`	the badge to be displayed - typically a `Badge`
`modifier: Modifier = Modifier`	optional `Modifier` for this item
`content: @Composable BoxScope.() -> Unit`	the anchor to which this badge will be positioned

BottomAppBar

Cmn

Material Design bottom app bar

@Composable
fun BottomAppBar(
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    cutoutShape: Shape? = null,
    elevation: Dp = AppBarDefaults.BottomAppBarElevation,
    contentPadding: PaddingValues = AppBarDefaults.ContentPadding,
    content: @Composable RowScope.() -> Unit
): Unit

A bottom app bar displays navigation and key actions at the bottom of screens.

App bars: bottom
image

It can also optionally display a FloatingActionButton, which is either overlaid on top of the BottomAppBar, or inset, carving a cutout in the BottomAppBar.

See BottomAppBar anatomy for the recommended content depending on the FloatingActionButton position.

Note that when you pass a non-null cutoutShape this makes the AppBar shape concave. The shadows for such shapes will not be drawn on Android versions less than 10.

The LocalContentAlpha inside a BottomAppBar is ContentAlpha.medium - this is the default for trailing and overflow icons. It is recommended that any leading icons at the start of the BottomAppBar, such as a menu icon, use ContentAlpha.high instead. This is demonstrated in the sample below.

Also see BottomNavigation.

import androidx.compose.foundation.layout.Spacer
import androidx.compose.material.AppBarDefaults
import androidx.compose.material.BottomAppBar
import androidx.compose.material.ContentAlpha
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.LocalContentAlpha
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.icons.filled.Menu
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.ui.Modifier

BottomAppBar(windowInsets = AppBarDefaults.bottomAppBarWindowInsets) {
    // Leading icons should typically have a high content alpha
    CompositionLocalProvider(LocalContentAlpha provides ContentAlpha.high) {
        IconButton(onClick = { /* doSomething() */ }) {
            Icon(Icons.Filled.Menu, contentDescription = "Localized description")
        }
    }
    // The actions should be at the end of the BottomAppBar. They use the default medium
    // content alpha provided by BottomAppBar
    Spacer(Modifier.weight(1f, true))
    IconButton(onClick = { /* doSomething() */ }) {
        Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
    }
    IconButton(onClick = { /* doSomething() */ }) {
        Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
    }
}

Parameters
`modifier: Modifier = Modifier`	The `Modifier` to be applied to this BottomAppBar
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for the BottomAppBar. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this BottomAppBar to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this BottomAppBar.
`cutoutShape: Shape? = null`	the shape of the cutout that will be added to the BottomAppBar - this should typically be the same shape used inside the `FloatingActionButton`, when `BottomAppBar` and `FloatingActionButton` are being used together in `Scaffold`. This shape will be drawn with an offset around all sides. If null, where will be no cutout.
`elevation: Dp = AppBarDefaults.BottomAppBarElevation`	the elevation of this BottomAppBar.
`contentPadding: PaddingValues = AppBarDefaults.ContentPadding`	the padding applied to the content of this BottomAppBar
`content: @Composable RowScope.() -> Unit`	the content of this BottomAppBar. The default layout here is a `Row`, so content inside will be placed horizontally.

BottomAppBar

Cmn

Material Design bottom app bar

@Composable
fun BottomAppBar(
    windowInsets: WindowInsets,
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    cutoutShape: Shape? = null,
    elevation: Dp = AppBarDefaults.BottomAppBarElevation,
    contentPadding: PaddingValues = AppBarDefaults.ContentPadding,
    content: @Composable RowScope.() -> Unit
): Unit

A bottom app bar displays navigation and key actions at the bottom of screens.

App bars: bottom
image

This particular overload provides ability to specify WindowInsets. Recommended value can be found in AppBarDefaults.bottomAppBarWindowInsets.

It can also optionally display a FloatingActionButton, which is either overlaid on top of the BottomAppBar, or inset, carving a cutout in the BottomAppBar.

See BottomAppBar anatomy for the recommended content depending on the FloatingActionButton position.

Note that when you pass a non-null cutoutShape this makes the AppBar shape concave. The shadows for such shapes will not be drawn on Android versions less than 10.

Also see BottomNavigation.

import androidx.compose.foundation.layout.Spacer
import androidx.compose.material.AppBarDefaults
import androidx.compose.material.BottomAppBar
import androidx.compose.material.ContentAlpha
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.LocalContentAlpha
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.icons.filled.Menu
import androidx.compose.runtime.CompositionLocalProvider
import androidx.compose.ui.Modifier

BottomAppBar(windowInsets = AppBarDefaults.bottomAppBarWindowInsets) {
    // Leading icons should typically have a high content alpha
    CompositionLocalProvider(LocalContentAlpha provides ContentAlpha.high) {
        IconButton(onClick = { /* doSomething() */ }) {
            Icon(Icons.Filled.Menu, contentDescription = "Localized description")
        }
    }
    // The actions should be at the end of the BottomAppBar. They use the default medium
    // content alpha provided by BottomAppBar
    Spacer(Modifier.weight(1f, true))
    IconButton(onClick = { /* doSomething() */ }) {
        Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
    }
    IconButton(onClick = { /* doSomething() */ }) {
        Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
    }
}

Parameters
`windowInsets: WindowInsets`	a window insets that app bar will respect.
`modifier: Modifier = Modifier`	The `Modifier` to be applied to this BottomAppBar
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for the BottomAppBar. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this BottomAppBar to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this BottomAppBar.
`cutoutShape: Shape? = null`	the shape of the cutout that will be added to the BottomAppBar - this should typically be the same shape used inside the `FloatingActionButton`, when `BottomAppBar` and `FloatingActionButton` are being used together in `Scaffold`. This shape will be drawn with an offset around all sides. If null, where will be no cutout.
`elevation: Dp = AppBarDefaults.BottomAppBarElevation`	the elevation of this BottomAppBar.
`contentPadding: PaddingValues = AppBarDefaults.ContentPadding`	the padding applied to the content of this BottomAppBar
`content: @Composable RowScope.() -> Unit`	the content of this BottomAppBar. The default layout here is a `Row`, so content inside will be placed horizontally.

BottomDrawer

Cmn

Material Design bottom navigation drawer

@Composable
fun BottomDrawer(
    drawerContent: @Composable ColumnScope.() -> Unit,
    modifier: Modifier = Modifier,
    drawerState: BottomDrawerState = rememberBottomDrawerState(Closed),
    gesturesEnabled: Boolean = true,
    drawerShape: Shape = DrawerDefaults.shape,
    drawerElevation: Dp = DrawerDefaults.Elevation,
    drawerBackgroundColor: Color = DrawerDefaults.backgroundColor,
    drawerContentColor: Color = contentColorFor(drawerBackgroundColor),
    scrimColor: Color = DrawerDefaults.scrimColor,
    content: @Composable () -> Unit
): Unit

Bottom navigation drawers are modal drawers that are anchored to the bottom of the screen instead of the left or right edge. They are only used with bottom app bars.

Bottom drawer
image

See ModalDrawer for a layout that introduces a classic from-the-side drawer.

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.selection.toggleable
import androidx.compose.material.BottomDrawer
import androidx.compose.material.BottomDrawerValue
import androidx.compose.material.Button
import androidx.compose.material.Checkbox
import androidx.compose.material.DrawerValue
import androidx.compose.material.Icon
import androidx.compose.material.ListItem
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.rememberBottomDrawerState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val (gesturesEnabled, toggleGesturesEnabled) = remember { mutableStateOf(true) }
val scope = rememberCoroutineScope()
Column {
    Row(
        modifier =
            Modifier.fillMaxWidth()
                .toggleable(value = gesturesEnabled, onValueChange = toggleGesturesEnabled)
    ) {
        Checkbox(gesturesEnabled, null)
        Text(text = if (gesturesEnabled) "Gestures Enabled" else "Gestures Disabled")
    }
    val drawerState = rememberBottomDrawerState(BottomDrawerValue.Closed)
    BottomDrawer(
        gesturesEnabled = gesturesEnabled,
        drawerState = drawerState,
        drawerContent = {
            Button(
                modifier = Modifier.align(Alignment.CenterHorizontally).padding(top = 16.dp),
                onClick = { scope.launch { drawerState.close() } },
                content = { Text("Close Drawer") },
            )
            LazyColumn {
                items(25) {
                    ListItem(
                        text = { Text("Item $it") },
                        icon = {
                            Icon(
                                Icons.Default.Favorite,
                                contentDescription = "Localized description",
                            )
                        },
                    )
                }
            }
        },
        content = {
            Column(
                modifier = Modifier.fillMaxSize().padding(16.dp),
                horizontalAlignment = Alignment.CenterHorizontally,
            ) {
                val openText = if (gesturesEnabled) "▲▲▲ Pull up ▲▲▲" else "Click the button!"
                Text(text = if (drawerState.isClosed) openText else "▼▼▼ Drag down ▼▼▼")
                Spacer(Modifier.height(20.dp))
                Button(onClick = { scope.launch { drawerState.open() } }) {
                    Text("Click to open")
                }
            }
        },
    )
}

Parameters
`drawerContent: @Composable ColumnScope.() -> Unit`	composable that represents content inside the drawer
`modifier: Modifier = Modifier`	optional `Modifier` for the entire component
`drawerState: BottomDrawerState = rememberBottomDrawerState(Closed)`	state of the drawer
`gesturesEnabled: Boolean = true`	whether or not drawer can be interacted by gestures
`drawerShape: Shape = DrawerDefaults.shape`	shape of the drawer sheet
`drawerElevation: Dp = DrawerDefaults.Elevation`	drawer sheet elevation. This controls the size of the shadow below the drawer sheet
`drawerBackgroundColor: Color = DrawerDefaults.backgroundColor`	background color to be used for the drawer sheet
`drawerContentColor: Color = contentColorFor(drawerBackgroundColor)`	color of the content to use inside the drawer sheet. Defaults to either the matching content color for `drawerBackgroundColor`, or, if it is not a color from the theme, this will keep the same value set above this Surface.
`scrimColor: Color = DrawerDefaults.scrimColor`	color of the scrim that obscures content when the drawer is open. If the color passed is `Color.Unspecified`, then a scrim will no longer be applied and the bottom drawer will not block interaction with the rest of the screen when visible.
`content: @Composable () -> Unit`	content of the rest of the UI

BottomNavigation

Cmn

Material Design bottom navigation

@Composable
fun BottomNavigation(
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: Dp = BottomNavigationDefaults.Elevation,
    content: @Composable RowScope.() -> Unit
): Unit

Bottom navigation bars allow movement between primary destinations in an app.

Bottom navigation
image

BottomNavigation should contain multiple BottomNavigationItems, each representing a singular destination.

A simple example looks like:

import androidx.compose.material.BottomNavigation
import androidx.compose.material.BottomNavigationDefaults
import androidx.compose.material.BottomNavigationItem
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

var selectedItem by remember { mutableStateOf(0) }
val items = listOf("Songs", "Artists", "Playlists")

BottomNavigation(windowInsets = BottomNavigationDefaults.windowInsets) {
    items.forEachIndexed { index, item ->
        BottomNavigationItem(
            icon = { Icon(Icons.Filled.Favorite, contentDescription = null) },
            label = { Text(item) },
            selected = selectedItem == index,
            onClick = { selectedItem = index },
        )
    }
}

See BottomNavigationItem for configuration specific to each item, and not the overall BottomNavigation component.

For more information, see Bottom Navigation

Parameters
`modifier: Modifier = Modifier`	optional `Modifier` for this BottomNavigation
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for this BottomNavigation
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this BottomNavigation to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this BottomNavigation.
`elevation: Dp = BottomNavigationDefaults.Elevation`	elevation for this BottomNavigation
`content: @Composable RowScope.() -> Unit`	destinations inside this BottomNavigation, this should contain multiple `BottomNavigationItem`s

BottomNavigation

Cmn

Material Design bottom navigation

@Composable
fun BottomNavigation(
    windowInsets: WindowInsets,
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: Dp = BottomNavigationDefaults.Elevation,
    content: @Composable RowScope.() -> Unit
): Unit

Bottom navigation bars allow movement between primary destinations in an app.

Bottom navigation
image

This particular overload provides ability to specify WindowInsets. Recommended value can be found in BottomNavigationDefaults.windowInsets.

BottomNavigation should contain multiple BottomNavigationItems, each representing a singular destination.

A simple example looks like:

import androidx.compose.material.BottomNavigation
import androidx.compose.material.BottomNavigationDefaults
import androidx.compose.material.BottomNavigationItem
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

var selectedItem by remember { mutableStateOf(0) }
val items = listOf("Songs", "Artists", "Playlists")

BottomNavigation(windowInsets = BottomNavigationDefaults.windowInsets) {
    items.forEachIndexed { index, item ->
        BottomNavigationItem(
            icon = { Icon(Icons.Filled.Favorite, contentDescription = null) },
            label = { Text(item) },
            selected = selectedItem == index,
            onClick = { selectedItem = index },
        )
    }
}

See BottomNavigationItem for configuration specific to each item, and not the overall BottomNavigation component.

For more information, see Bottom Navigation

Parameters
`windowInsets: WindowInsets`	a window insets that bottom navigation will respect.
`modifier: Modifier = Modifier`	optional `Modifier` for this BottomNavigation
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for this BottomNavigation
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this BottomNavigation to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this BottomNavigation.
`elevation: Dp = BottomNavigationDefaults.Elevation`	elevation for this BottomNavigation
`content: @Composable RowScope.() -> Unit`	destinations inside this BottomNavigation, this should contain multiple `BottomNavigationItem`s

BottomSheetScaffold

Cmn

Material Design standard bottom sheet

@Composable
fun BottomSheetScaffold(
    sheetContent: @Composable ColumnScope.() -> Unit,
    modifier: Modifier = Modifier,
    scaffoldState: BottomSheetScaffoldState = rememberBottomSheetScaffoldState(),
    topBar: (@Composable () -> Unit)? = null,
    snackbarHost: @Composable (SnackbarHostState) -> Unit = { SnackbarHost(it) },
    floatingActionButton: (@Composable () -> Unit)? = null,
    floatingActionButtonPosition: FabPosition = FabPosition.End,
    sheetGesturesEnabled: Boolean = true,
    sheetShape: Shape = MaterialTheme.shapes.large,
    sheetElevation: Dp = BottomSheetScaffoldDefaults.SheetElevation,
    sheetBackgroundColor: Color = MaterialTheme.colors.surface,
    sheetContentColor: Color = contentColorFor(sheetBackgroundColor),
    sheetPeekHeight: Dp = BottomSheetScaffoldDefaults.SheetPeekHeight,
    backgroundColor: Color = MaterialTheme.colors.background,
    contentColor: Color = contentColorFor(backgroundColor),
    content: @Composable (PaddingValues) -> Unit
): Unit

Standard bottom sheets co-exist with the screen’s main UI region and allow for simultaneously viewing and interacting with both regions. They are commonly used to keep a feature or secondary content visible on screen when content in main UI region is frequently scrolled or panned.

Standard bottom sheet
image

This component provides an API to put together several material components to construct your screen. For a similar component which implements the basic material design layout strategy with app bars, floating action buttons and navigation drawers, use the standard Scaffold. For similar component that uses a backdrop as the centerpiece of the screen, use BackdropScaffold.

A simple example of a bottom sheet scaffold looks like this:

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.material.BottomSheetScaffold
import androidx.compose.material.Button
import androidx.compose.material.FabPosition
import androidx.compose.material.FloatingActionButton
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.TopAppBar
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.rememberBottomSheetScaffoldState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val scope = rememberCoroutineScope()
val scaffoldState = rememberBottomSheetScaffoldState()
BottomSheetScaffold(
    sheetContent = {
        Box(Modifier.fillMaxWidth().height(128.dp), contentAlignment = Alignment.Center) {
            Text("Swipe up to expand sheet")
        }
        Column(
            Modifier.fillMaxWidth().padding(64.dp),
            horizontalAlignment = Alignment.CenterHorizontally,
        ) {
            Text("Sheet content")
            Spacer(Modifier.height(20.dp))
            Button(onClick = { scope.launch { scaffoldState.bottomSheetState.collapse() } }) {
                Text("Click to collapse sheet")
            }
        }
    },
    scaffoldState = scaffoldState,
    topBar = { TopAppBar { Text("Bottom sheet scaffold") } },
    floatingActionButton = {
        var clickCount by remember { mutableStateOf(0) }
        FloatingActionButton(
            onClick = {
                // show snackbar as a suspend function
                scope.launch {
                    scaffoldState.snackbarHostState.showSnackbar("Snackbar #${++clickCount}")
                }
            }
        ) {
            Icon(Icons.Default.Favorite, contentDescription = "Localized description")
        }
    },
    floatingActionButtonPosition = FabPosition.End,
    sheetPeekHeight = 128.dp,
) { innerPadding ->
    LazyColumn(contentPadding = innerPadding) {
        items(100) {
            Box(Modifier.fillMaxWidth().height(50.dp).background(colors[it % colors.size]))
        }
    }
}

Parameters
`sheetContent: @Composable ColumnScope.() -> Unit`	The content of the bottom sheet.
`modifier: Modifier = Modifier`	An optional `Modifier` for the root of the scaffold.
`scaffoldState: BottomSheetScaffoldState = rememberBottomSheetScaffoldState()`	The state of the scaffold.
`topBar: (@Composable () -> Unit)? = null`	An optional top app bar.
`snackbarHost: @Composable (SnackbarHostState) -> Unit = { SnackbarHost(it) }`	The composable hosting the snackbars shown inside the scaffold.
`floatingActionButton: (@Composable () -> Unit)? = null`	An optional floating action button.
`floatingActionButtonPosition: FabPosition = FabPosition.End`	The position of the floating action button.
`sheetGesturesEnabled: Boolean = true`	Whether the bottom sheet can be interacted with by gestures.
`sheetShape: Shape = MaterialTheme.shapes.large`	The shape of the bottom sheet.
`sheetElevation: Dp = BottomSheetScaffoldDefaults.SheetElevation`	The elevation of the bottom sheet.
`sheetBackgroundColor: Color = MaterialTheme.colors.surface`	The background color of the bottom sheet.
`sheetContentColor: Color = contentColorFor(sheetBackgroundColor)`	The preferred content color provided by the bottom sheet to its children. Defaults to the matching content color for `sheetBackgroundColor`, or if that is not a color from the theme, this will keep the same content color set above the bottom sheet.
`sheetPeekHeight: Dp = BottomSheetScaffoldDefaults.SheetPeekHeight`	The height of the bottom sheet when it is collapsed. If the peek height equals the sheet's full height, the sheet will only have a collapsed state.
`backgroundColor: Color = MaterialTheme.colors.background`	The background color of the scaffold body.
`contentColor: Color = contentColorFor(backgroundColor)`	The color of the content in scaffold body. Defaults to either the matching content color for `backgroundColor`, or, if it is not a color from the theme, this will keep the same value set above this Surface.
`content: @Composable (PaddingValues) -> Unit`	The main content of the screen. You should use the provided `PaddingValues` to properly offset the content, so that it is not obstructed by the bottom sheet when collapsed.

Button

Cmn

Material Design contained button

Added in 1.0.0

@Composable
fun Button(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    elevation: ButtonElevation? = ButtonDefaults.elevation(),
    shape: Shape = MaterialTheme.shapes.small,
    border: BorderStroke? = null,
    colors: ButtonColors = ButtonDefaults.buttonColors(),
    contentPadding: PaddingValues = ButtonDefaults.ContentPadding,
    content: @Composable RowScope.() -> Unit
): Unit

Contained buttons are high-emphasis, distinguished by their use of elevation and fill. They contain actions that are primary to your app.

The default text style for internal Text components will be set to Typography.button.

import androidx.compose.material.Button
import androidx.compose.material.Text

Button(onClick = { /* Do something! */ }) { Text("Button") }

If you need to add an icon just put it inside the content slot together with a spacing and a text:

import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.size
import androidx.compose.material.Button
import androidx.compose.material.ButtonDefaults
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.ui.Modifier

Button(onClick = { /* Do something! */ }) {
    Icon(
        Icons.Filled.Favorite,
        contentDescription = null,
        modifier = Modifier.size(ButtonDefaults.IconSize),
    )
    Spacer(Modifier.size(ButtonDefaults.IconSpacing))
    Text("Like")
}

Parameters
`onClick: () -> Unit`	Will be called when the user clicks the button
`modifier: Modifier = Modifier`	Modifier to be applied to the button
`enabled: Boolean = true`	Controls the enabled state of the button. When `false`, this button will not be clickable
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this button. You can use this to change the button's appearance or preview the button in different states. Note that if `null` is provided, interactions will still happen internally.
`elevation: ButtonElevation? = ButtonDefaults.elevation()`	`ButtonElevation` used to resolve the elevation for this button in different states. This controls the size of the shadow below the button. Pass `null` here to disable elevation for this button. See `ButtonDefaults.elevation`.
`shape: Shape = MaterialTheme.shapes.small`	Defines the button's shape as well as its shadow
`border: BorderStroke? = null`	Border to draw around the button
`colors: ButtonColors = ButtonDefaults.buttonColors()`	`ButtonColors` that will be used to resolve the background and content color for this button in different states. See `ButtonDefaults.buttonColors`.
`contentPadding: PaddingValues = ButtonDefaults.ContentPadding`	The spacing values to apply internally between the container and the content
`content: @Composable RowScope.() -> Unit`	The content displayed on the button, expected to be text, icon or image.

Card

Cmn

Added in 1.10.0

@Composable
@NonRestartableComposable
fun Card(
    modifier: Modifier = Modifier,
    shape: Shape = MaterialTheme.shapes.medium,
    backgroundColor: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(backgroundColor),
    border: BorderStroke? = null,
    elevation: Dp = 1.dp,
    content: @Composable () -> Unit
): Unit

Material Design card

Cards contain content and actions about a single subject.

Cards
image

This version of Card will block clicks behind it. For clickable card, please use another overload that accepts onClick as a parameter.

import androidx.compose.material.Card
import androidx.compose.material.Text

Card { Text("Card Content") }

Parameters
`modifier: Modifier = Modifier`	Modifier to be applied to the layout of the card.
`shape: Shape = MaterialTheme.shapes.medium`	Defines the card's shape as well its shadow. A shadow is only displayed if the `elevation` is greater than zero.
`backgroundColor: Color = MaterialTheme.colors.surface`	The background color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this card to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this card.
`border: BorderStroke? = null`	Optional border to draw on top of the card
`elevation: Dp = 1.dp`	The z-coordinate at which to place this card. This controls the size of the shadow below the card.
`content: @Composable () -> Unit`	The content displayed on the card.

Card

Cmn

Added in 1.10.0

@ExperimentalMaterialApi
@Composable
@NonRestartableComposable
fun Card(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    shape: Shape = MaterialTheme.shapes.medium,
    backgroundColor: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(backgroundColor),
    border: BorderStroke? = null,
    elevation: Dp = 1.dp,
    interactionSource: MutableInteractionSource? = null,
    content: @Composable () -> Unit
): Unit

Cards are Surfaces that display content and actions on a single topic.

This version of Card provides click handling as well. If you do not want Card to handle clicks, consider using another overload.

import androidx.compose.material.Card
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

var count by remember { mutableStateOf(0) }
Card(onClick = { count++ }) { Text("Clickable card content with count: $count") }

Parameters
`onClick: () -> Unit`	callback to be called when the card is clicked
`modifier: Modifier = Modifier`	Modifier to be applied to the layout of the card.
`enabled: Boolean = true`	Controls the enabled state of the card. When `false`, this card will not be clickable
`shape: Shape = MaterialTheme.shapes.medium`	Defines the card's shape as well its shadow. A shadow is only displayed if the `elevation` is greater than zero.
`backgroundColor: Color = MaterialTheme.colors.surface`	The background color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this card to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this card.
`border: BorderStroke? = null`	Optional border to draw on top of the card
`elevation: Dp = 1.dp`	The z-coordinate at which to place this card. This controls the size of the shadow below the card.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this card. You can use this to change the card's appearance or preview the card in different states. Note that if `null` is provided, interactions will still happen internally.
`content: @Composable () -> Unit`	The content displayed on the card.

Checkbox

Cmn

Added in 1.0.0

@Composable
fun Checkbox(
    checked: Boolean,
    onCheckedChange: ((Boolean) -> Unit)?,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    colors: CheckboxColors = CheckboxDefaults.colors()
): Unit

Material Design checkbox

Checkboxes allow users to select one or more items from a set. Checkboxes can turn an option on or off.

Checkboxes
image

import androidx.compose.material.Checkbox
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

val checkedState = remember { mutableStateOf(true) }
Checkbox(checked = checkedState.value, onCheckedChange = { checkedState.value = it })

Parameters
`checked: Boolean`	whether Checkbox is checked or unchecked
`onCheckedChange: ((Boolean) -> Unit)?`	callback to be invoked when checkbox is being clicked, therefore the change of checked state in requested. If null, then this is passive and relies entirely on a higher-level component to control the "checked" state.
`modifier: Modifier = Modifier`	Modifier to be applied to the layout of the checkbox
`enabled: Boolean = true`	whether the component is enabled or grayed out
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this checkbox. You can use this to change the checkbox's appearance or preview the checkbox in different states. Note that if `null` is provided, interactions will still happen internally.
`colors: CheckboxColors = CheckboxDefaults.colors()`	`CheckboxColors` that will be used to determine the color of the checkmark / box / border in different states. See `CheckboxDefaults.colors`.

See also
`TriStateCheckbox`	if you require support for an indeterminate state, or more advanced color customization between states.

Chip

Cmn

Material Design action chip.

Added in 1.2.0

@ExperimentalMaterialApi
@Composable
fun Chip(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    shape: Shape = MaterialTheme.shapes.small.copy(CornerSize(percent = 50)),
    border: BorderStroke? = null,
    colors: ChipColors = ChipDefaults.chipColors(),
    leadingIcon: (@Composable () -> Unit)? = null,
    content: @Composable RowScope.() -> Unit
): Unit

Action chips offer actions related to primary content. They should appear dynamically and contextually in a UI.

import androidx.compose.material.Chip
import androidx.compose.material.Text

Chip(onClick = { /* Do something! */ }) { Text("Action Chip") }

You can create an outlined action chip using ChipDefaults.outlinedChipColors and ChipDefaults.outlinedBorder

import androidx.compose.material.Chip
import androidx.compose.material.ChipDefaults
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Settings

Chip(
    onClick = { /* Do something! */ },
    border = ChipDefaults.outlinedBorder,
    colors = ChipDefaults.outlinedChipColors(),
    leadingIcon = { Icon(Icons.Filled.Settings, contentDescription = "Localized description") },
) {
    Text("Change settings")
}

Action chips should appear in a set and can be horizontally scrollable

import androidx.compose.foundation.horizontalScroll
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.rememberScrollState
import androidx.compose.material.Chip
import androidx.compose.material.Text
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

Column(horizontalAlignment = Alignment.CenterHorizontally) {
    Row(modifier = Modifier.horizontalScroll(rememberScrollState())) {
        repeat(9) { index ->
            Chip(
                modifier = Modifier.padding(horizontal = 4.dp),
                onClick = { /* do something*/ },
            ) {
                Text("Chip $index")
            }
        }
    }
}

Alternatively, use androidx.compose.foundation.layout.FlowRow to wrap chips to a new line.

import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.FlowRow
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.wrapContentHeight
import androidx.compose.material.Chip
import androidx.compose.material.Text
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

Column {
    FlowRow(
        Modifier.fillMaxWidth(1f).wrapContentHeight(align = Alignment.Top),
        horizontalArrangement = Arrangement.Start,
    ) {
        repeat(10) { index ->
            Chip(
                modifier =
                    Modifier.padding(horizontal = 4.dp)
                        .align(alignment = Alignment.CenterVertically),
                onClick = { /* do something*/ },
            ) {
                Text("Chip $index")
            }
        }
    }
}

Parameters
`onClick: () -> Unit`	called when the chip is clicked.
`modifier: Modifier = Modifier`	Modifier to be applied to the chip
`enabled: Boolean = true`	When disabled, chip will not respond to user input. It will also appear visually disabled and disabled to accessibility services.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this chip. You can use this to change the chip's appearance or preview the chip in different states. Note that if `null` is provided, interactions will still happen internally.
`shape: Shape = MaterialTheme.shapes.small.copy(CornerSize(percent = 50))`	defines the chip's shape as well as its shadow
`border: BorderStroke? = null`	Border to draw around the chip. Pass `null` here for no border.
`colors: ChipColors = ChipDefaults.chipColors()`	`ChipColors` that will be used to resolve the background and content color for this chip in different states. See `ChipDefaults.chipColors`.
`leadingIcon: (@Composable () -> Unit)? = null`	Optional icon at the start of the chip, preceding the content text.
`content: @Composable RowScope.() -> Unit`	the content of this chip

CircularProgressIndicator

Cmn

Added in 1.10.0

@Composable
fun CircularProgressIndicator(
    modifier: Modifier = Modifier,
    color: Color = MaterialTheme.colors.primary,
    strokeWidth: Dp = ProgressIndicatorDefaults.StrokeWidth,
    backgroundColor: Color = Color.Transparent,
    strokeCap: StrokeCap = StrokeCap.Square
): Unit

Indeterminate Material Design circular progress indicator.

Progress indicators express an unspecified wait time or display the length of a process.

Circular progress indicator
image

Parameters
`modifier: Modifier = Modifier`	the `Modifier` to be applied to this progress indicator
`color: Color = MaterialTheme.colors.primary`	The color of the progress indicator.
`strokeWidth: Dp = ProgressIndicatorDefaults.StrokeWidth`	The stroke width for the progress indicator.
`backgroundColor: Color = Color.Transparent`	The color of the background behind the indicator, visible when the progress has not reached that area of the overall indicator yet.
`strokeCap: StrokeCap = StrokeCap.Square`	stroke cap to use for the ends of this progress indicator

CircularProgressIndicator

Cmn

Added in 1.10.0

@Composable
fun CircularProgressIndicator(
    progress: @FloatRange(from = 0.0, to = 1.0) Float,
    modifier: Modifier = Modifier,
    color: Color = MaterialTheme.colors.primary,
    strokeWidth: Dp = ProgressIndicatorDefaults.StrokeWidth,
    backgroundColor: Color = Color.Transparent,
    strokeCap: StrokeCap = StrokeCap.Butt
): Unit

Determinate Material Design circular progress indicator.

Progress indicators express an unspecified wait time or display the length of a process.

Circular progress indicator
image

By default there is no animation between progress values. You can use ProgressIndicatorDefaults.ProgressAnimationSpec as the default recommended AnimationSpec when animating progress, such as in the following example:

import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.requiredHeight
import androidx.compose.material.CircularProgressIndicator
import androidx.compose.material.OutlinedButton
import androidx.compose.material.ProgressIndicatorDefaults
import androidx.compose.material.Text
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

var progress by remember { mutableStateOf(0.1f) }
val animatedProgress by
    animateFloatAsState(
        targetValue = progress,
        animationSpec = ProgressIndicatorDefaults.ProgressAnimationSpec,
    )

Column(horizontalAlignment = Alignment.CenterHorizontally) {
    CircularProgressIndicator(progress = animatedProgress)
    Spacer(Modifier.requiredHeight(30.dp))
    OutlinedButton(onClick = { if (progress < 1f) progress += 0.1f }) { Text("Increase") }
}

Parameters
`progress: @FloatRange(from = 0.0, to = 1.0) Float`	The progress of this progress indicator, where 0.0 represents no progress and 1.0 represents full progress. Values outside of this range are coerced into the range.
`modifier: Modifier = Modifier`	the `Modifier` to be applied to this progress indicator
`color: Color = MaterialTheme.colors.primary`	The color of the progress indicator.
`strokeWidth: Dp = ProgressIndicatorDefaults.StrokeWidth`	The stroke width for the progress indicator.
`backgroundColor: Color = Color.Transparent`	The color of the background behind the indicator, visible when the progress has not reached that area of the overall indicator yet.
`strokeCap: StrokeCap = StrokeCap.Butt`	stroke cap to use for the ends of this progress indicator

Divider

Cmn

Added in 1.10.0

@Composable
fun Divider(
    modifier: Modifier = Modifier,
    color: Color = MaterialTheme.colors.onSurface.copy(alpha = DividerAlpha),
    thickness: Dp = 1.dp,
    startIndent: Dp = 0.dp
): Unit

Material Design divider

A divider is a thin line that groups content in lists and layouts.

Dividers
image

Parameters
`modifier: Modifier = Modifier`	Modifier to be applied to the divider line
`color: Color = MaterialTheme.colors.onSurface.copy(alpha = DividerAlpha)`	color of the divider line
`thickness: Dp = 1.dp`	thickness of the divider line, 1 dp is used by default. Using `Dp.Hairline` will produce a single pixel divider regardless of screen density.
`startIndent: Dp = 0.dp`	start offset of this line, no offset by default

DropdownMenu

Cmn android

Material Design dropdown menu

@Composable
fun DropdownMenu(
    expanded: Boolean,
    onDismissRequest: () -> Unit,
    modifier: Modifier = Modifier,
    offset: DpOffset = DpOffset(0.dp, 0.dp),
    scrollState: ScrollState = rememberScrollState(),
    properties: PopupProperties = DefaultMenuProperties,
    content: @Composable ColumnScope.() -> Unit
): Unit

A dropdown menu is a compact way of displaying multiple choices. It appears upon interaction with an element (such as an icon or button) or when users perform a specific action.

Menus
image

A DropdownMenu behaves similarly to a Popup, and will use the position of the parent layout to position itself on screen. Commonly a DropdownMenu will be placed in a Box with a sibling that will be used as the 'anchor'. Note that a DropdownMenu by itself will not take up any space in a layout, as the menu is displayed in a separate window, on top of other content.

The content of a DropdownMenu will typically be DropdownMenuItems, as well as custom content. Using DropdownMenuItems will result in a menu that matches the Material specification for menus. Also note that the content is placed inside a scrollable Column, so using a LazyColumn as the root layout inside content is unsupported.

onDismissRequest will be called when the menu should close - for example when there is a tap outside the menu, or when the back key is pressed.

DropdownMenu changes its positioning depending on the available space, always trying to be fully visible. Depending on layout direction, first it will try to align its start to the start of its parent, then its end to the end of its parent, and then to the edge of the window. Vertically, it will try to align its top to the bottom of its parent, then its bottom to top of its parent, and then to the edge of the window.

An offset can be provided to adjust the positioning of the menu for cases when the layout bounds of its parent do not coincide with its visual bounds.

Example usage:

import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.Divider
import androidx.compose.material.DropdownMenu
import androidx.compose.material.DropdownMenuItem
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.MoreVert
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier

var expanded by remember { mutableStateOf(false) }

Box(modifier = Modifier.fillMaxSize().wrapContentSize(Alignment.TopStart)) {
    IconButton(onClick = { expanded = true }) {
        Icon(Icons.Default.MoreVert, contentDescription = "Localized description")
    }
    DropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
        DropdownMenuItem(onClick = { /* Handle refresh! */ }) { Text("Refresh") }
        DropdownMenuItem(onClick = { /* Handle settings! */ }) { Text("Settings") }
        Divider()
        DropdownMenuItem(onClick = { /* Handle send feedback! */ }) { Text("Send Feedback") }
    }
}

Example usage with a ScrollState to control the menu items scroll position:

import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.foundation.rememberScrollState
import androidx.compose.material.DropdownMenu
import androidx.compose.material.DropdownMenuItem
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.MoreVert
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier

var expanded by remember { mutableStateOf(false) }
val scrollState = rememberScrollState()
Box(modifier = Modifier.fillMaxSize().wrapContentSize(Alignment.TopStart)) {
    IconButton(onClick = { expanded = true }) {
        Icon(Icons.Default.MoreVert, contentDescription = "Localized description")
    }
    DropdownMenu(
        expanded = expanded,
        onDismissRequest = { expanded = false },
        scrollState = scrollState,
    ) {
        repeat(30) {
            DropdownMenuItem(onClick = { /* Handle item! */ }) { Text("Item ${it + 1}") }
        }
    }
    LaunchedEffect(expanded) {
        if (expanded) {
            // Scroll to show the bottom menu items.
            scrollState.scrollTo(scrollState.maxValue)
        }
    }
}

Parameters
`expanded: Boolean`	whether the menu is expanded or not
`onDismissRequest: () -> Unit`	called when the user requests to dismiss the menu, such as by tapping outside the menu's bounds
`modifier: Modifier = Modifier`	`Modifier` to be applied to the menu's content
`offset: DpOffset = DpOffset(0.dp, 0.dp)`	`DpOffset` from the original position of the menu. The offset respects the `LayoutDirection`, so the offset's x position will be added in LTR and subtracted in RTL.
`scrollState: ScrollState = rememberScrollState()`	a `ScrollState` to used by the menu's content for items vertical scrolling
`properties: PopupProperties = DefaultMenuProperties`	`PopupProperties` for further customization of this popup's behavior
`content: @Composable ColumnScope.() -> Unit`	the content of this dropdown menu, typically a `DropdownMenuItem`

DropdownMenuItem

Cmn android

Material Design dropdown menu

@Composable
fun DropdownMenuItem(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    contentPadding: PaddingValues = MenuDefaults.DropdownMenuItemContentPadding,
    interactionSource: MutableInteractionSource? = null,
    content: @Composable RowScope.() -> Unit
): Unit

Example usage:

import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.Divider
import androidx.compose.material.DropdownMenu
import androidx.compose.material.DropdownMenuItem
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.MoreVert
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier

var expanded by remember { mutableStateOf(false) }

Box(modifier = Modifier.fillMaxSize().wrapContentSize(Alignment.TopStart)) {
    IconButton(onClick = { expanded = true }) {
        Icon(Icons.Default.MoreVert, contentDescription = "Localized description")
    }
    DropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
        DropdownMenuItem(onClick = { /* Handle refresh! */ }) { Text("Refresh") }
        DropdownMenuItem(onClick = { /* Handle settings! */ }) { Text("Settings") }
        Divider()
        DropdownMenuItem(onClick = { /* Handle send feedback! */ }) { Text("Send Feedback") }
    }
}

Parameters
`onClick: () -> Unit`	Called when the menu item was clicked
`modifier: Modifier = Modifier`	The modifier to be applied to the menu item
`enabled: Boolean = true`	Controls the enabled state of the menu item - when `false`, the menu item will not be clickable and `onClick` will not be invoked
`contentPadding: PaddingValues = MenuDefaults.DropdownMenuItemContentPadding`	the padding applied to the content of this menu item
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this menu item. You can use this to change the menu item's appearance or preview the menu item in different states. Note that if `null` is provided, interactions will still happen internally.
`content: @Composable RowScope.() -> Unit`	the content of this menu item

ExposedDropdownMenuBox

Cmn

Material Design Exposed Dropdown Menu.

Added in 1.6.0

@ExperimentalMaterialApi
@Composable
fun ExposedDropdownMenuBox(
    expanded: Boolean,
    onExpandedChange: (Boolean) -> Unit,
    modifier: Modifier = Modifier,
    content: @Composable ExposedDropdownMenuBoxScope.() -> Unit
): Unit

Box for Exposed Dropdown Menu. Expected to contain TextField and ExposedDropdownMenuBoxScope.ExposedDropdownMenu as a content.

An example of read-only Exposed Dropdown Menu:

import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.foundation.text.input.setTextAndPlaceCursorAtEnd
import androidx.compose.material.DropdownMenuItem
import androidx.compose.material.ExposedDropdownMenuBox
import androidx.compose.material.ExposedDropdownMenuDefaults
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

val options = listOf("Option 1", "Option 2", "Option 3", "Option 4", "Option 5")
var expanded by remember { mutableStateOf(false) }
val textFieldState = rememberTextFieldState(options[0])
// We want to react on tap/press on TextField to show menu
ExposedDropdownMenuBox(expanded = expanded, onExpandedChange = { expanded = it }) {
    TextField(
        readOnly = true,
        state = textFieldState,
        label = { Text("Label") },
        trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
        colors = ExposedDropdownMenuDefaults.textFieldColors(),
    )
    ExposedDropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
        options.forEach { selectionOption ->
            DropdownMenuItem(
                onClick = {
                    textFieldState.setTextAndPlaceCursorAtEnd(selectionOption)
                    expanded = false
                }
            ) {
                Text(text = selectionOption)
            }
        }
    }
}

An example of editable Exposed Dropdown Menu:

import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.foundation.text.input.setTextAndPlaceCursorAtEnd
import androidx.compose.material.DropdownMenuItem
import androidx.compose.material.ExposedDropdownMenuBox
import androidx.compose.material.ExposedDropdownMenuDefaults
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

val options = listOf("Option 1", "Option 2", "Option 3", "Option 4", "Option 5")
var expanded by remember { mutableStateOf(false) }
val textFieldState = rememberTextFieldState()
ExposedDropdownMenuBox(expanded = expanded, onExpandedChange = { expanded = it }) {
    TextField(
        state = textFieldState,
        label = { Text("Label") },
        trailingIcon = { ExposedDropdownMenuDefaults.TrailingIcon(expanded = expanded) },
        colors = ExposedDropdownMenuDefaults.textFieldColors(),
    )
    // filter options based on text field value
    val filteringOptions =
        options.filter { it.contains(textFieldState.text, ignoreCase = true) }
    if (filteringOptions.isNotEmpty()) {
        ExposedDropdownMenu(expanded = expanded, onDismissRequest = { expanded = false }) {
            filteringOptions.forEach { selectionOption ->
                DropdownMenuItem(
                    onClick = {
                        textFieldState.setTextAndPlaceCursorAtEnd(selectionOption)
                        expanded = false
                    }
                ) {
                    Text(text = selectionOption)
                }
            }
        }
    }
}

Parameters
`expanded: Boolean`	Whether Dropdown Menu should be expanded or not.
`onExpandedChange: (Boolean) -> Unit`	Executes when the user clicks on the ExposedDropdownMenuBox.
`modifier: Modifier = Modifier`	The modifier to apply to this layout
`content: @Composable ExposedDropdownMenuBoxScope.() -> Unit`	The content to be displayed inside ExposedDropdownMenuBox.

ExtendedFloatingActionButton

Cmn

Material Design extended floating action button

Added in 1.10.0

@Composable
fun ExtendedFloatingActionButton(
    text: @Composable () -> Unit,
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    icon: (@Composable () -> Unit)? = null,
    interactionSource: MutableInteractionSource? = null,
    shape: Shape = MaterialTheme.shapes.small.copy(CornerSize(percent = 50)),
    backgroundColor: Color = MaterialTheme.colors.secondary,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: FloatingActionButtonElevation = FloatingActionButtonDefaults.elevation()
): Unit

The extended FAB is wider than a regular FAB, and it includes a text label.

This extended FAB contains text and an optional icon that will be placed at the start. See FloatingActionButton for a FAB that just contains some content, typically an icon.

import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.FloatingActionButton
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite

ExtendedFloatingActionButton(
    icon = { Icon(Icons.Filled.Favorite, contentDescription = null) },
    text = { Text("ADD TO BASKET") },
    onClick = { /*do something*/ },
)

If you want FAB’s container to have a fluid width (to be defined by its relationship to something else on screen, such as screen width or the layout grid) just apply an appropriate modifier. For example to fill the whole available width you can do:

import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.FloatingActionButton
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.ui.Modifier

ExtendedFloatingActionButton(
    icon = { Icon(Icons.Filled.Favorite, contentDescription = null) },
    text = { Text("FLUID FAB") },
    onClick = { /*do something*/ },
    modifier = Modifier.fillMaxWidth(),
)

Parameters
`text: @Composable () -> Unit`	Text label displayed inside this FAB
`onClick: () -> Unit`	callback invoked when this FAB is clicked
`modifier: Modifier = Modifier`	`Modifier` to be applied to this FAB
`icon: (@Composable () -> Unit)? = null`	Optional icon for this FAB, typically this will be a `Icon`.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this FAB. You can use this to change the FAB's appearance or preview the FAB in different states. Note that if `null` is provided, interactions will still happen internally.
`shape: Shape = MaterialTheme.shapes.small.copy(CornerSize(percent = 50))`	The `Shape` of this FAB
`backgroundColor: Color = MaterialTheme.colors.secondary`	The background color. Use `Color.Transparent` to have no color
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color. Will be used by text and iconography
`elevation: FloatingActionButtonElevation = FloatingActionButtonDefaults.elevation()`	`FloatingActionButtonElevation` used to resolve the elevation for this FAB in different states. This controls the size of the shadow below the FAB.

FilterChip

Cmn

Material Design filter chip

Added in 1.2.0

@ExperimentalMaterialApi
@Composable
fun FilterChip(
    selected: Boolean,
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    shape: Shape = MaterialTheme.shapes.small.copy(CornerSize(percent = 50)),
    border: BorderStroke? = null,
    colors: SelectableChipColors = ChipDefaults.filterChipColors(),
    leadingIcon: (@Composable () -> Unit)? = null,
    selectedIcon: (@Composable () -> Unit)? = null,
    trailingIcon: (@Composable () -> Unit)? = null,
    content: @Composable RowScope.() -> Unit
): Unit

Filter chips use tags or descriptive words to filter a collection. They are a good alternative to toggle buttons or checkboxes.

import androidx.compose.foundation.layout.requiredSize
import androidx.compose.material.Chip
import androidx.compose.material.ChipDefaults
import androidx.compose.material.FilterChip
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Done
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier

val state = remember { mutableStateOf(false) }
FilterChip(
    selected = state.value,
    onClick = { state.value = !state.value },
    selectedIcon = {
        Icon(
            imageVector = Icons.Filled.Done,
            contentDescription = "Localized Description",
            modifier = Modifier.requiredSize(ChipDefaults.SelectedIconSize),
        )
    },
) {
    Text("Filter chip")
}

A filter chip with leading icon and selected icon looks like:

import androidx.compose.foundation.layout.requiredSize
import androidx.compose.material.Chip
import androidx.compose.material.ChipDefaults
import androidx.compose.material.FilterChip
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Done
import androidx.compose.material.icons.filled.Home
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier

val state = remember { mutableStateOf(false) }
FilterChip(
    selected = state.value,
    onClick = { state.value = !state.value },
    leadingIcon = {
        Icon(
            imageVector = Icons.Filled.Home,
            contentDescription = "Localized description",
            modifier = Modifier.requiredSize(ChipDefaults.LeadingIconSize),
        )
    },
    selectedIcon = {
        Icon(
            imageVector = Icons.Filled.Done,
            contentDescription = "Localized Description",
            modifier = Modifier.requiredSize(ChipDefaults.SelectedIconSize),
        )
    },
) {
    Text("Filter chip")
}

You can create an outlined filter chip using ChipDefaults.outlinedFilterChipColors and ChipDefaults.outlinedBorder

import androidx.compose.foundation.layout.requiredSize
import androidx.compose.material.Chip
import androidx.compose.material.ChipDefaults
import androidx.compose.material.FilterChip
import androidx.compose.material.Icon
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Done
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier

val state = remember { mutableStateOf(false) }
FilterChip(
    selected = state.value,
    onClick = { state.value = !state.value },
    border = ChipDefaults.outlinedBorder,
    colors = ChipDefaults.outlinedFilterChipColors(),
    selectedIcon = {
        Icon(
            imageVector = Icons.Filled.Done,
            contentDescription = "Localized Description",
            modifier = Modifier.requiredSize(ChipDefaults.SelectedIconSize),
        )
    },
) {
    Text("Filter chip")
}

Parameters
`selected: Boolean`	boolean state for this chip: either it is selected or not
`onClick: () -> Unit`	will be called when the user clicks the chip
`modifier: Modifier = Modifier`	Modifier to be applied to the chip
`enabled: Boolean = true`	controls the enabled state of the chip. When `false`, this chip will not be clickable
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this chip. You can use this to change the chip's appearance or preview the chip in different states. Note that if `null` is provided, interactions will still happen internally.
`shape: Shape = MaterialTheme.shapes.small.copy(CornerSize(percent = 50))`	defines the chip's shape as well as its shadow
`border: BorderStroke? = null`	border to draw around the chip
`colors: SelectableChipColors = ChipDefaults.filterChipColors()`	`SelectableChipColors` that will be used to resolve the background and content color for this chip in different states. See `ChipDefaults.filterChipColors`.
`leadingIcon: (@Composable () -> Unit)? = null`	Optional icon at the start of the chip, preceding the content text.
`selectedIcon: (@Composable () -> Unit)? = null`	Icon used to indicate a chip's selected state, it is commonly a androidx.compose.material.icons.Icons.Filled.Done. By default, if a leading icon is also provided, the leading icon will be obscured by a circle overlay and then the selected icon.
`trailingIcon: (@Composable () -> Unit)? = null`	Optional icon at the end of the chip, following the content text. Filter chips commonly do not display any trailing icon.
`content: @Composable RowScope.() -> Unit`	the content of this chip

FloatingActionButton

Cmn

Material Design floating action button

Added in 1.10.0

@Composable
fun FloatingActionButton(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    interactionSource: MutableInteractionSource? = null,
    shape: Shape = MaterialTheme.shapes.small.copy(CornerSize(percent = 50)),
    backgroundColor: Color = MaterialTheme.colors.secondary,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: FloatingActionButtonElevation = FloatingActionButtonDefaults.elevation(),
    content: @Composable () -> Unit
): Unit

A floating action button (FAB) represents the primary action of a screen.

This FAB is typically used with an Icon:

import androidx.compose.material.FloatingActionButton
import androidx.compose.material.Icon
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite

FloatingActionButton(onClick = { /*do something*/ }) {
    Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
}

See ExtendedFloatingActionButton for an extended FAB that contains text and an optional icon.

Parameters
`onClick: () -> Unit`	callback invoked when this FAB is clicked
`modifier: Modifier = Modifier`	`Modifier` to be applied to this FAB.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this FAB. You can use this to change the FAB's appearance or preview the FAB in different states. Note that if `null` is provided, interactions will still happen internally.
`shape: Shape = MaterialTheme.shapes.small.copy(CornerSize(percent = 50))`	The `Shape` of this FAB
`backgroundColor: Color = MaterialTheme.colors.secondary`	The background color. Use `Color.Transparent` to have no color
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color for content inside this FAB
`elevation: FloatingActionButtonElevation = FloatingActionButtonDefaults.elevation()`	`FloatingActionButtonElevation` used to resolve the elevation for this FAB in different states. This controls the size of the shadow below the FAB.
`content: @Composable () -> Unit`	the content of this FAB - this is typically an `Icon`.

Icon

Cmn

Added in 1.10.0

@Composable
@NonRestartableComposable
fun Icon(
    bitmap: ImageBitmap,
    contentDescription: String?,
    modifier: Modifier = Modifier,
    tint: Color = LocalContentColor.current.copy(alpha = LocalContentAlpha.current)
): Unit

A Material Design icon component that draws bitmap using tint, with a default value of LocalContentColor. If bitmap has no intrinsic size, this component will use the recommended default size. Icon is an opinionated component designed to be used with single-color icons so that they can be tinted correctly for the component they are placed in. For multicolored icons and icons that should not be tinted, use Color.Unspecified for tint. For generic images that should not be tinted, and do not follow the recommended icon size, use the generic androidx.compose.foundation.Image instead. For a clickable icon, see IconButton.

Parameters
`bitmap: ImageBitmap`	`ImageBitmap` to draw inside this Icon
`contentDescription: String?`	text used by accessibility services to describe what this icon represents. This should always be provided unless this icon is used for decorative purposes, and does not represent a meaningful action that a user can take. This text should be localized, such as by using androidx.compose.ui.res.stringResource or similar
`modifier: Modifier = Modifier`	optional `Modifier` for this Icon
`tint: Color = LocalContentColor.current.copy(alpha = LocalContentAlpha.current)`	tint to be applied to `bitmap`. If `Color.Unspecified` is provided, then no tint is applied

Icon

Cmn

Added in 1.10.0

@Composable
@NonRestartableComposable
fun Icon(
    imageVector: ImageVector,
    contentDescription: String?,
    modifier: Modifier = Modifier,
    tint: Color = LocalContentColor.current.copy(alpha = LocalContentAlpha.current)
): Unit

A Material Design icon component that draws imageVector using tint, with a default value of LocalContentColor. If imageVector has no intrinsic size, this component will use the recommended default size. Icon is an opinionated component designed to be used with single-color icons so that they can be tinted correctly for the component they are placed in. For multicolored icons and icons that should not be tinted, use Color.Unspecified for tint. For generic images that should not be tinted, and do not follow the recommended icon size, use the generic androidx.compose.foundation.Image instead. For a clickable icon, see IconButton.

Parameters
`imageVector: ImageVector`	`ImageVector` to draw inside this Icon
`contentDescription: String?`	text used by accessibility services to describe what this icon represents. This should always be provided unless this icon is used for decorative purposes, and does not represent a meaningful action that a user can take. This text should be localized, such as by using androidx.compose.ui.res.stringResource or similar
`modifier: Modifier = Modifier`	optional `Modifier` for this Icon
`tint: Color = LocalContentColor.current.copy(alpha = LocalContentAlpha.current)`	tint to be applied to `imageVector`. If `Color.Unspecified` is provided, then no tint is applied

Icon

Cmn

Added in 1.10.0

@Composable
fun Icon(
    painter: Painter,
    contentDescription: String?,
    modifier: Modifier = Modifier,
    tint: Color = LocalContentColor.current.copy(alpha = LocalContentAlpha.current)
): Unit

A Material Design icon component that draws painter using tint, with a default value of LocalContentColor. If painter has no intrinsic size, this component will use the recommended default size. Icon is an opinionated component designed to be used with single-color icons so that they can be tinted correctly for the component they are placed in. For multicolored icons and icons that should not be tinted, use Color.Unspecified for tint. For generic images that should not be tinted, and do not follow the recommended icon size, use the generic androidx.compose.foundation.Image instead. For a clickable icon, see IconButton.

Parameters
`painter: Painter`	`Painter` to draw inside this Icon
`contentDescription: String?`	text used by accessibility services to describe what this icon represents. This should always be provided unless this icon is used for decorative purposes, and does not represent a meaningful action that a user can take. This text should be localized, such as by using androidx.compose.ui.res.stringResource or similar
`modifier: Modifier = Modifier`	optional `Modifier` for this Icon
`tint: Color = LocalContentColor.current.copy(alpha = LocalContentAlpha.current)`	tint to be applied to `painter`. If `Color.Unspecified` is provided, then no tint is applied

IconButton

Cmn

Added in 1.0.0

@Composable
fun IconButton(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    content: @Composable () -> Unit
): Unit

IconButton is a clickable icon, used to represent actions. An IconButton has an overall minimum touch target size of 48 x 48dp, to meet accessibility guidelines. content is centered inside the IconButton.

This component is typically used inside an App Bar for the navigation icon / actions. See App Bar documentation for samples of this.

content should typically be an Icon, using an icon from androidx.compose.material.icons.Icons. If using a custom icon, note that the typical size for the internal icon is 24 x 24 dp.

import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite

IconButton(onClick = { /* doSomething() */ }) {
    Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
}

Parameters
`onClick: () -> Unit`	the lambda to be invoked when this icon is pressed
`modifier: Modifier = Modifier`	optional `Modifier` for this IconButton
`enabled: Boolean = true`	whether or not this IconButton will handle input events and appear enabled for semantics purposes
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this IconButton. You can use this to change the IconButton's appearance or preview the IconButton in different states. Note that if `null` is provided, interactions will still happen internally.
`content: @Composable () -> Unit`	the content (icon) to be drawn inside the IconButton. This is typically an `Icon`.

IconToggleButton

Cmn

Added in 1.0.0

@Composable
fun IconToggleButton(
    checked: Boolean,
    onCheckedChange: (Boolean) -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    content: @Composable () -> Unit
): Unit

An IconButton with two states, for icons that can be toggled 'on' and 'off', such as a bookmark icon, or a navigation icon that opens a drawer.

import androidx.compose.animation.animateColorAsState
import androidx.compose.material.Icon
import androidx.compose.material.IconToggleButton
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.graphics.Color

var checked by remember { mutableStateOf(false) }

IconToggleButton(checked = checked, onCheckedChange = { checked = it }) {
    val tint by animateColorAsState(if (checked) Color(0xFFEC407A) else Color(0xFFB0BEC5))
    Icon(Icons.Filled.Favorite, contentDescription = "Localized description", tint = tint)
}

Parameters
`checked: Boolean`	whether this IconToggleButton is currently checked
`onCheckedChange: (Boolean) -> Unit`	callback to be invoked when this icon is selected
`modifier: Modifier = Modifier`	optional `Modifier` for this IconToggleButton
`enabled: Boolean = true`	enabled whether or not this `IconToggleButton` will handle input events and appear enabled for semantics purposes
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this IconButton. You can use this to change the IconButton's appearance or preview the IconButton in different states. Note that if `null` is provided, interactions will still happen internally.
`content: @Composable () -> Unit`	the content (icon) to be drawn inside the IconToggleButton. This is typically an `Icon`.

LeadingIconTab

Cmn

Added in 1.10.0

@Composable
fun LeadingIconTab(
    selected: Boolean,
    onClick: () -> Unit,
    text: @Composable () -> Unit,
    icon: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    selectedContentColor: Color = LocalContentColor.current,
    unselectedContentColor: Color = selectedContentColor.copy(alpha = ContentAlpha.medium)
): Unit

Material Design tab

Tabs organize content across different screens, data sets, and other interactions.

Tab image

A LeadingIconTab represents a single page of content using a text label and an icon in front of the label. It represents its selected state by tinting the text label and icon with selectedContentColor.

This should typically be used inside of a TabRow, see the corresponding documentation for example usage.

Parameters
`selected: Boolean`	whether this tab is selected or not
`onClick: () -> Unit`	the callback to be invoked when this tab is selected
`text: @Composable () -> Unit`	the text label displayed in this tab
`icon: @Composable () -> Unit`	the icon displayed in this tab
`modifier: Modifier = Modifier`	optional `Modifier` for this tab
`enabled: Boolean = true`	controls the enabled state of this tab. When `false`, this tab will not be clickable and will appear disabled to accessibility services.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this tab. You can use this to change the tab's appearance or preview the tab in different states. Note that if `null` is provided, interactions will still happen internally.
`selectedContentColor: Color = LocalContentColor.current`	the color for the content of this tab when selected, and the color of the ripple.
`unselectedContentColor: Color = selectedContentColor.copy(alpha = ContentAlpha.medium)`	the color for the content of this tab when not selected

See also
`Tab`

LinearProgressIndicator

Cmn

Added in 1.10.0

@Composable
fun LinearProgressIndicator(
    modifier: Modifier = Modifier,
    color: Color = MaterialTheme.colors.primary,
    backgroundColor: Color = color.copy(alpha = IndicatorBackgroundOpacity),
    strokeCap: StrokeCap = StrokeCap.Butt
): Unit

Indeterminate Material Design linear progress indicator.

Progress indicators express an unspecified wait time or display the length of a process.

Linear progress indicator
image

Parameters
`modifier: Modifier = Modifier`	the `Modifier` to be applied to this progress indicator
`color: Color = MaterialTheme.colors.primary`	The color of the progress indicator.
`backgroundColor: Color = color.copy(alpha = IndicatorBackgroundOpacity)`	The color of the background behind the indicator, visible when the progress has not reached that area of the overall indicator yet.
`strokeCap: StrokeCap = StrokeCap.Butt`	stroke cap to use for the ends of this progress indicator

LinearProgressIndicator

Cmn

Added in 1.10.0

@Composable
fun LinearProgressIndicator(
    progress: @FloatRange(from = 0.0, to = 1.0) Float,
    modifier: Modifier = Modifier,
    color: Color = MaterialTheme.colors.primary,
    backgroundColor: Color = color.copy(alpha = IndicatorBackgroundOpacity),
    strokeCap: StrokeCap = StrokeCap.Butt
): Unit

Determinate Material Design linear progress indicator.

Progress indicators express an unspecified wait time or display the length of a process.

Linear progress indicator
image

import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.requiredHeight
import androidx.compose.material.LinearProgressIndicator
import androidx.compose.material.OutlinedButton
import androidx.compose.material.ProgressIndicatorDefaults
import androidx.compose.material.Text
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

var progress by remember { mutableStateOf(0.1f) }
val animatedProgress by
    animateFloatAsState(
        targetValue = progress,
        animationSpec = ProgressIndicatorDefaults.ProgressAnimationSpec,
    )

Column(horizontalAlignment = Alignment.CenterHorizontally) {
    LinearProgressIndicator(progress = animatedProgress)
    Spacer(Modifier.requiredHeight(30.dp))
    OutlinedButton(onClick = { if (progress < 1f) progress += 0.1f }) { Text("Increase") }
}

Parameters
`progress: @FloatRange(from = 0.0, to = 1.0) Float`	The progress of this progress indicator, where 0.0 represents no progress and 1.0 represents full progress. Values outside of this range are coerced into the range.
`modifier: Modifier = Modifier`	the `Modifier` to be applied to this progress indicator
`color: Color = MaterialTheme.colors.primary`	The color of the progress indicator.
`backgroundColor: Color = color.copy(alpha = IndicatorBackgroundOpacity)`	The color of the background behind the indicator, visible when the progress has not reached that area of the overall indicator yet.
`strokeCap: StrokeCap = StrokeCap.Butt`	stroke cap to use for the ends of this progress indicator

ListItem

Cmn

Added in 1.0.0

@Composable
@ExperimentalMaterialApi
fun ListItem(
    modifier: Modifier = Modifier,
    icon: (@Composable () -> Unit)? = null,
    secondaryText: (@Composable () -> Unit)? = null,
    singleLineSecondaryText: Boolean = true,
    overlineText: (@Composable () -> Unit)? = null,
    trailing: (@Composable () -> Unit)? = null,
    text: @Composable () -> Unit
): Unit

Material Design list

Lists are continuous, vertical indexes of text or images.

Lists
image

To make this ListItem clickable, use Modifier.clickable. To add a background to the ListItem, wrap it with a Surface.

This component can be used to achieve the list item templates existing in the spec. For example:

one-line items

import androidx.compose.foundation.clickable
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.size
import androidx.compose.material.Divider
import androidx.compose.material.Icon
import androidx.compose.material.ListItem
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

Column {
    ListItem(text = { Text("One line list item with no icon") })
    Divider()
    ListItem(
        text = { Text("One line list item with 24x24 icon") },
        icon = { Icon(Icons.Filled.Favorite, contentDescription = null) },
    )
    Divider()
    ListItem(
        text = { Text("One line list item with 40x40 icon") },
        icon = {
            Icon(
                Icons.Filled.Favorite,
                contentDescription = null,
                modifier = Modifier.size(40.dp),
            )
        },
    )
    Divider()
    ListItem(
        text = { Text("One line list item with 56x56 icon") },
        icon = {
            Icon(
                Icons.Filled.Favorite,
                contentDescription = null,
                modifier = Modifier.size(56.dp),
            )
        },
    )
    Divider()
    ListItem(
        text = { Text("One line clickable list item") },
        icon = {
            Icon(
                Icons.Filled.Favorite,
                contentDescription = null,
                modifier = Modifier.size(56.dp),
            )
        },
        modifier = Modifier.clickable {},
    )
    Divider()
    ListItem(
        text = { Text("One line list item with trailing icon") },
        trailing = { Icon(Icons.Filled.Favorite, contentDescription = "Localized Description") },
    )
    Divider()
    ListItem(
        text = { Text("One line list item") },
        icon = {
            Icon(
                Icons.Filled.Favorite,
                contentDescription = null,
                modifier = Modifier.size(40.dp),
            )
        },
        trailing = { Icon(Icons.Filled.Favorite, contentDescription = "Localized description") },
    )
    Divider()
}

two-line items

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.size
import androidx.compose.material.Divider
import androidx.compose.material.Icon
import androidx.compose.material.ListItem
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

Column {
    ListItem(text = { Text("Two line list item") }, secondaryText = { Text("Secondary text") })
    Divider()
    ListItem(text = { Text("Two line list item") }, overlineText = { Text("OVERLINE") })
    Divider()
    ListItem(
        text = { Text("Two line list item with 24x24 icon") },
        secondaryText = { Text("Secondary text") },
        icon = { Icon(Icons.Filled.Favorite, contentDescription = null) },
    )
    Divider()
    ListItem(
        text = { Text("Two line list item with 40x40 icon") },
        secondaryText = { Text("Secondary text") },
        icon = {
            Icon(
                Icons.Filled.Favorite,
                contentDescription = null,
                modifier = Modifier.size(40.dp),
            )
        },
    )
    Divider()
    ListItem(
        text = { Text("Two line list item with 40x40 icon") },
        secondaryText = { Text("Secondary text") },
        trailing = { Text("meta") },
        icon = {
            Icon(
                Icons.Filled.Favorite,
                contentDescription = null,
                modifier = Modifier.size(40.dp),
            )
        },
    )
    Divider()
}

three-line items

import androidx.compose.foundation.layout.Column
import androidx.compose.material.Divider
import androidx.compose.material.Icon
import androidx.compose.material.ListItem
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite

Column {
    ListItem(
        text = { Text("Three line list item") },
        secondaryText = {
            Text(
                "This is a long secondary text for the current list item, " +
                    "displayed on two lines"
            )
        },
        singleLineSecondaryText = false,
        trailing = { Text("meta") },
    )
    Divider()
    ListItem(
        text = { Text("Three line list item") },
        overlineText = { Text("OVERLINE") },
        secondaryText = { Text("Secondary text") },
    )
    Divider()
    ListItem(
        text = { Text("Three line list item with 24x24 icon") },
        secondaryText = {
            Text(
                "This is a long secondary text for the current list item " +
                    "displayed on two lines"
            )
        },
        singleLineSecondaryText = false,
        icon = { Icon(Icons.Filled.Favorite, contentDescription = null) },
    )
    Divider()
    ListItem(
        text = { Text("Three line list item with trailing icon") },
        secondaryText = {
            Text(
                "This is a long secondary text for the current list" +
                    " item, displayed on two lines"
            )
        },
        singleLineSecondaryText = false,
        trailing = { Icon(Icons.Filled.Favorite, contentDescription = "Localized description") },
    )
    Divider()
    ListItem(
        text = { Text("Three line list item") },
        overlineText = { Text("OVERLINE") },
        secondaryText = { Text("Secondary text") },
        trailing = { Text("meta") },
    )
    Divider()
}

You can combine this component with a checkbox or switch as in the following examples:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.selection.toggleable
import androidx.compose.material.Checkbox
import androidx.compose.material.Divider
import androidx.compose.material.ListItem
import androidx.compose.material.Switch
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.Role

Column {
    var switched by remember { mutableStateOf(false) }
    val onSwitchedChange: (Boolean) -> Unit = { switched = it }
    ListItem(
        text = { Text("Switch ListItem") },
        trailing = {
            Switch(
                checked = switched,
                onCheckedChange = null, // null recommended for accessibility with screenreaders
            )
        },
        modifier =
            Modifier.toggleable(
                role = Role.Switch,
                value = switched,
                onValueChange = onSwitchedChange,
            ),
    )
    Divider()
    var checked by remember { mutableStateOf(true) }
    val onCheckedChange: (Boolean) -> Unit = { checked = it }
    ListItem(
        text = { Text("Checkbox ListItem") },
        trailing = {
            Checkbox(
                checked = checked,
                onCheckedChange = null, // null recommended for accessibility with screenreaders
            )
        },
        modifier =
            Modifier.toggleable(
                role = Role.Checkbox,
                value = checked,
                onValueChange = onCheckedChange,
            ),
    )
    Divider()
}

Parameters
`modifier: Modifier = Modifier`	Modifier to be applied to the list item
`icon: (@Composable () -> Unit)? = null`	The leading supporting visual of the list item
`secondaryText: (@Composable () -> Unit)? = null`	The secondary text of the list item
`singleLineSecondaryText: Boolean = true`	Whether the secondary text is single line
`overlineText: (@Composable () -> Unit)? = null`	The text displayed above the primary text
`trailing: (@Composable () -> Unit)? = null`	The trailing meta text, icon, switch or checkbox
`text: @Composable () -> Unit`	The primary text of the list item

MaterialTheme

Cmn

Added in 1.0.0

@Composable
fun MaterialTheme(
    colors: Colors = MaterialTheme.colors,
    typography: Typography = MaterialTheme.typography,
    shapes: Shapes = MaterialTheme.shapes,
    content: @Composable () -> Unit
): Unit

Material Theming

Material Theming refers to the customization of your Material Design app to better reflect your product’s brand.

Material components such as Button and Checkbox use values provided here when retrieving default values.

It defines colors as specified in the Material Color theme creation spec, typography defined in the Material Type Scale spec, and shapes defined in the Shape scheme.

All values may be set by providing this component with the colors, typography, and shapes attributes. Use this to configure the overall theme of elements within this MaterialTheme.

Any values that are not set will inherit the current value from the theme, falling back to the defaults if there is no parent MaterialTheme. This allows using a MaterialTheme at the top of your application, and then separate MaterialTheme(s) for different screens / parts of your UI, overriding only the parts of the theme definition that need to change.

import androidx.compose.foundation.isSystemInDarkTheme
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Text
import androidx.compose.material.Typography
import androidx.compose.material.darkColors
import androidx.compose.material.lightColors
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.text.TextStyle
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.sp

val lightColors = lightColors(primary = Color(0xFF1EB980))

val darkColors = darkColors(primary = Color(0xFF66ffc7))

val colors = if (isSystemInDarkTheme()) darkColors else lightColors

val typography =
    Typography(
        h1 = TextStyle(fontWeight = FontWeight.W100, fontSize = 96.sp),
        button = TextStyle(fontWeight = FontWeight.W600, fontSize = 14.sp),
    )

MaterialTheme(colors = colors, typography = typography) {
    val currentTheme = if (MaterialTheme.colors.isLight) "light" else "dark"
    ExtendedFloatingActionButton(
        text = { Text("FAB with text style and color from $currentTheme theme") },
        onClick = {},
    )
}

Parameters
`colors: Colors = MaterialTheme.colors`	A complete definition of the Material Color theme for this hierarchy
`typography: Typography = MaterialTheme.typography`	A set of text styles to be used as this hierarchy's typography system
`shapes: Shapes = MaterialTheme.shapes`	A set of shapes to be used by the components in this hierarchy
`content: @Composable () -> Unit`	The content inheriting this theme

ModalBottomSheetLayout

Cmn

Material Design modal bottom sheet

@Composable
fun ModalBottomSheetLayout(
    sheetContent: @Composable ColumnScope.() -> Unit,
    modifier: Modifier = Modifier,
    sheetState: ModalBottomSheetState = rememberModalBottomSheetState(Hidden),
    sheetGesturesEnabled: Boolean = true,
    sheetShape: Shape = MaterialTheme.shapes.large,
    sheetElevation: Dp = ModalBottomSheetDefaults.Elevation,
    sheetBackgroundColor: Color = MaterialTheme.colors.surface,
    sheetContentColor: Color = contentColorFor(sheetBackgroundColor),
    scrimColor: Color = ModalBottomSheetDefaults.scrimColor,
    content: @Composable () -> Unit
): Unit

Modal bottom sheets present a set of choices while blocking interaction with the rest of the screen. They are an alternative to inline menus and simple dialogs, providing additional room for content, iconography, and actions.

Modal bottom sheet
image

A simple example of a modal bottom sheet looks like this:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.selection.toggleable
import androidx.compose.material.Button
import androidx.compose.material.Checkbox
import androidx.compose.material.Icon
import androidx.compose.material.ListItem
import androidx.compose.material.ModalBottomSheetLayout
import androidx.compose.material.ModalBottomSheetValue
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.rememberModalBottomSheetState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.unit.dp

var skipHalfExpanded by remember { mutableStateOf(false) }
val state =
    rememberModalBottomSheetState(
        initialValue = ModalBottomSheetValue.Hidden,
        skipHalfExpanded = skipHalfExpanded,
    )
val scope = rememberCoroutineScope()
ModalBottomSheetLayout(
    sheetState = state,
    sheetContent = {
        LazyColumn {
            items(50) {
                ListItem(
                    text = { Text("Item $it") },
                    icon = {
                        Icon(
                            Icons.Default.Favorite,
                            contentDescription = "Localized description",
                        )
                    },
                )
            }
        }
    },
) {
    Column(
        modifier = Modifier.fillMaxSize().padding(16.dp),
        horizontalAlignment = Alignment.CenterHorizontally,
    ) {
        Row(
            Modifier.toggleable(
                value = skipHalfExpanded,
                role = Role.Checkbox,
                onValueChange = { checked -> skipHalfExpanded = checked },
            )
        ) {
            Checkbox(checked = skipHalfExpanded, onCheckedChange = null)
            Spacer(Modifier.width(16.dp))
            Text("Skip Half Expanded State")
        }
        Spacer(Modifier.height(20.dp))
        Button(onClick = { scope.launch { state.show() } }) { Text("Click to show sheet") }
    }
}

Parameters
`sheetContent: @Composable ColumnScope.() -> Unit`	The content of the bottom sheet.
`modifier: Modifier = Modifier`	Optional `Modifier` for the entire component.
`sheetState: ModalBottomSheetState = rememberModalBottomSheetState(Hidden)`	The state of the bottom sheet.
`sheetGesturesEnabled: Boolean = true`	Whether the bottom sheet can be interacted with by gestures.
`sheetShape: Shape = MaterialTheme.shapes.large`	The shape of the bottom sheet.
`sheetElevation: Dp = ModalBottomSheetDefaults.Elevation`	The elevation of the bottom sheet.
`sheetBackgroundColor: Color = MaterialTheme.colors.surface`	The background color of the bottom sheet.
`sheetContentColor: Color = contentColorFor(sheetBackgroundColor)`	The preferred content color provided by the bottom sheet to its children. Defaults to the matching content color for `sheetBackgroundColor`, or if that is not a color from the theme, this will keep the same content color set above the bottom sheet.
`scrimColor: Color = ModalBottomSheetDefaults.scrimColor`	The color of the scrim that is applied to the rest of the screen when the bottom sheet is visible. If the color passed is `Color.Unspecified`, then a scrim will no longer be applied and the bottom sheet will not block interaction with the rest of the screen when visible.
`content: @Composable () -> Unit`	The content of rest of the screen.

ModalDrawer

Cmn

Material Design modal navigation drawer

@Composable
fun ModalDrawer(
    drawerContent: @Composable ColumnScope.() -> Unit,
    modifier: Modifier = Modifier,
    drawerState: DrawerState = rememberDrawerState(DrawerValue.Closed),
    gesturesEnabled: Boolean = true,
    drawerShape: Shape = DrawerDefaults.shape,
    drawerElevation: Dp = DrawerDefaults.Elevation,
    drawerBackgroundColor: Color = DrawerDefaults.backgroundColor,
    drawerContentColor: Color = contentColorFor(drawerBackgroundColor),
    scrimColor: Color = DrawerDefaults.scrimColor,
    content: @Composable () -> Unit
): Unit

Modal navigation drawers block interaction with the rest of an app’s content with a scrim. They are elevated above most of the app’s UI and don’t affect the screen’s layout grid.

Modal drawer
image

See BottomDrawer for a layout that introduces a bottom drawer, suitable when using bottom navigation.

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.material.Button
import androidx.compose.material.DrawerValue
import androidx.compose.material.ModalDrawer
import androidx.compose.material.Text
import androidx.compose.material.rememberDrawerState
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val drawerState = rememberDrawerState(DrawerValue.Closed)
val scope = rememberCoroutineScope()
ModalDrawer(
    drawerState = drawerState,
    drawerContent = {
        Button(
            modifier = Modifier.align(Alignment.CenterHorizontally).padding(top = 16.dp),
            onClick = { scope.launch { drawerState.close() } },
            content = { Text("Close Drawer") },
        )
    },
    content = {
        Column(
            modifier = Modifier.fillMaxSize().padding(16.dp),
            horizontalAlignment = Alignment.CenterHorizontally,
        ) {
            Text(text = if (drawerState.isClosed) ">>> Swipe >>>" else "<<< Swipe <<<")
            Spacer(Modifier.height(20.dp))
            Button(onClick = { scope.launch { drawerState.open() } }) { Text("Click to open") }
        }
    },
)

Parameters
`drawerContent: @Composable ColumnScope.() -> Unit`	composable that represents content inside the drawer
`modifier: Modifier = Modifier`	optional modifier for the drawer
`drawerState: DrawerState = rememberDrawerState(DrawerValue.Closed)`	state of the drawer
`gesturesEnabled: Boolean = true`	whether or not drawer can be interacted by gestures
`drawerShape: Shape = DrawerDefaults.shape`	shape of the drawer sheet
`drawerElevation: Dp = DrawerDefaults.Elevation`	drawer sheet elevation. This controls the size of the shadow below the drawer sheet
`drawerBackgroundColor: Color = DrawerDefaults.backgroundColor`	background color to be used for the drawer sheet
`drawerContentColor: Color = contentColorFor(drawerBackgroundColor)`	color of the content to use inside the drawer sheet. Defaults to either the matching content color for `drawerBackgroundColor`, or, if it is not a color from the theme, this will keep the same value set above this Surface.
`scrimColor: Color = DrawerDefaults.scrimColor`	color of the scrim that obscures content when the drawer is open
`content: @Composable () -> Unit`	content of the rest of the UI

Throws
`kotlin.IllegalStateException`	when parent has `Float.POSITIVE_INFINITY` width

NavigationRail

Cmn

Material Design navigation rail

@Composable
fun NavigationRail(
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: Dp = NavigationRailDefaults.Elevation,
    header: (@Composable ColumnScope.() -> Unit)? = null,
    content: @Composable ColumnScope.() -> Unit
): Unit

A Navigation Rail is a side navigation component that allows movement between primary destinations in an app. A navigation rail should be used to display three to seven app destinations and, optionally, a FloatingActionButton or a logo inside header. Each destination is typically represented by an icon and an optional text label.

Navigation rail
image

NavigationRail should contain multiple NavigationRailItems, each representing a singular destination.

A simple example looks like:

import androidx.compose.material.Icon
import androidx.compose.material.NavigationRail
import androidx.compose.material.NavigationRailDefaults
import androidx.compose.material.NavigationRailItem
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Home
import androidx.compose.material.icons.filled.Search
import androidx.compose.material.icons.filled.Settings
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

var selectedItem by remember { mutableStateOf(0) }
val items = listOf("Home", "Search", "Settings")
val icons = listOf(Icons.Filled.Home, Icons.Filled.Search, Icons.Filled.Settings)
NavigationRail(windowInsets = NavigationRailDefaults.windowInsets) {
    items.forEachIndexed { index, item ->
        NavigationRailItem(
            icon = { Icon(icons[index], contentDescription = item) },
            label = { Text(item) },
            selected = selectedItem == index,
            onClick = { selectedItem = index },
        )
    }
}

See NavigationRailItem for configuration specific to each item, and not the overall NavigationRail component.

For more information, see Navigation Rail

Parameters
`modifier: Modifier = Modifier`	optional `Modifier` for this NavigationRail
`backgroundColor: Color = MaterialTheme.colors.surface`	The background color for this NavigationRail
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this NavigationRail to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this NavigationRail.
`elevation: Dp = NavigationRailDefaults.Elevation`	elevation for this NavigationRail
`header: (@Composable ColumnScope.() -> Unit)? = null`	an optional header that may hold a `FloatingActionButton` or a logo
`content: @Composable ColumnScope.() -> Unit`	destinations inside this NavigationRail, this should contain multiple `NavigationRailItem`s

NavigationRail

Cmn

Material Design navigation rail

@Composable
fun NavigationRail(
    windowInsets: WindowInsets,
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: Dp = NavigationRailDefaults.Elevation,
    header: (@Composable ColumnScope.() -> Unit)? = null,
    content: @Composable ColumnScope.() -> Unit
): Unit

Navigation rail
image

This particular overload provides ability to specify WindowInsets. Recommended value can be found in NavigationRailDefaults.windowInsets.

NavigationRail should contain multiple NavigationRailItems, each representing a singular destination.

A simple example looks like:

import androidx.compose.material.Icon
import androidx.compose.material.NavigationRail
import androidx.compose.material.NavigationRailDefaults
import androidx.compose.material.NavigationRailItem
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Home
import androidx.compose.material.icons.filled.Search
import androidx.compose.material.icons.filled.Settings
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

var selectedItem by remember { mutableStateOf(0) }
val items = listOf("Home", "Search", "Settings")
val icons = listOf(Icons.Filled.Home, Icons.Filled.Search, Icons.Filled.Settings)
NavigationRail(windowInsets = NavigationRailDefaults.windowInsets) {
    items.forEachIndexed { index, item ->
        NavigationRailItem(
            icon = { Icon(icons[index], contentDescription = item) },
            label = { Text(item) },
            selected = selectedItem == index,
            onClick = { selectedItem = index },
        )
    }
}

See NavigationRailItem for configuration specific to each item, and not the overall NavigationRail component.

For more information, see Navigation Rail

Parameters
`windowInsets: WindowInsets`	a window insets that navigation rail will respect
`modifier: Modifier = Modifier`	optional `Modifier` for this NavigationRail
`backgroundColor: Color = MaterialTheme.colors.surface`	The background color for this NavigationRail
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this NavigationRail to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this NavigationRail.
`elevation: Dp = NavigationRailDefaults.Elevation`	elevation for this NavigationRail
`header: (@Composable ColumnScope.() -> Unit)? = null`	an optional header that may hold a `FloatingActionButton` or a logo
`content: @Composable ColumnScope.() -> Unit`	destinations inside this NavigationRail, this should contain multiple `NavigationRailItem`s

NavigationRailItem

Cmn

Material Design navigation rail

Added in 1.10.0

@Composable
fun NavigationRailItem(
    selected: Boolean,
    onClick: () -> Unit,
    icon: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    label: (@Composable () -> Unit)? = null,
    alwaysShowLabel: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    selectedContentColor: Color = MaterialTheme.colors.primary,
    unselectedContentColor: Color = LocalContentColor.current.copy(alpha = ContentAlpha.medium)
): Unit

A NavigationRailItem always shows text labels (if it exists) when selected. Showing text labels if not selected is controlled by alwaysShowLabel.

Parameters
`selected: Boolean`	whether this item is selected (active)
`onClick: () -> Unit`	the callback to be invoked when this item is selected
`icon: @Composable () -> Unit`	icon for this item, typically this will be an `Icon`
`modifier: Modifier = Modifier`	optional `Modifier` for this item
`enabled: Boolean = true`	controls the enabled state of this item. When `false`, this item will not be clickable and will appear disabled to accessibility services.
`label: (@Composable () -> Unit)? = null`	optional text label for this item
`alwaysShowLabel: Boolean = true`	whether to always show the label for this item. If false, the label will only be shown when this item is selected.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this item. You can use this to change the item's appearance or preview the item in different states. Note that if `null` is provided, interactions will still happen internally.
`selectedContentColor: Color = MaterialTheme.colors.primary`	the color of the text label and icon when this item is selected, and the color of the ripple.
`unselectedContentColor: Color = LocalContentColor.current.copy(alpha = ContentAlpha.medium)`	the color of the text label and icon when this item is not selected

OutlinedButton

Cmn

Material Design outlined button

Added in 1.0.0

@Composable
@NonRestartableComposable
fun OutlinedButton(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    elevation: ButtonElevation? = null,
    shape: Shape = MaterialTheme.shapes.small,
    border: BorderStroke? = ButtonDefaults.outlinedBorder,
    colors: ButtonColors = ButtonDefaults.outlinedButtonColors(),
    contentPadding: PaddingValues = ButtonDefaults.ContentPadding,
    content: @Composable RowScope.() -> Unit
): Unit

Outlined buttons are medium-emphasis buttons. They contain actions that are important, but aren't the primary action in an app.

The default text style for internal Text components will be set to Typography.button.

import androidx.compose.material.Button
import androidx.compose.material.OutlinedButton
import androidx.compose.material.Text

OutlinedButton(onClick = { /* Do something! */ }) { Text("Outlined Button") }

Parameters
`onClick: () -> Unit`	Will be called when the user clicks the button
`modifier: Modifier = Modifier`	Modifier to be applied to the button
`enabled: Boolean = true`	Controls the enabled state of the button. When `false`, this button will not be clickable
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this button. You can use this to change the button's appearance or preview the button in different states. Note that if `null` is provided, interactions will still happen internally.
`elevation: ButtonElevation? = null`	`ButtonElevation` used to resolve the elevation for this button in different states. An OutlinedButton typically has no elevation, see `Button` for a button with elevation.
`shape: Shape = MaterialTheme.shapes.small`	Defines the button's shape as well as its shadow
`border: BorderStroke? = ButtonDefaults.outlinedBorder`	Border to draw around the button
`colors: ButtonColors = ButtonDefaults.outlinedButtonColors()`	`ButtonColors` that will be used to resolve the background and content color for this button in different states. See `ButtonDefaults.outlinedButtonColors`.
`contentPadding: PaddingValues = ButtonDefaults.ContentPadding`	The spacing values to apply internally between the container and the content
`content: @Composable RowScope.() -> Unit`	The content displayed on the button, expected to be text, icon or image.

OutlinedSecureTextField

Cmn

Material Design outlined text field for secure content

Added in 1.10.0

@Composable
fun OutlinedSecureTextField(
    state: TextFieldState,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    textStyle: TextStyle = LocalTextStyle.current,
    label: (@Composable () -> Unit)? = null,
    placeholder: (@Composable () -> Unit)? = null,
    leadingIcon: (@Composable () -> Unit)? = null,
    trailingIcon: (@Composable () -> Unit)? = null,
    isError: Boolean = false,
    inputTransformation: InputTransformation? = null,
    textObfuscationMode: TextObfuscationMode = TextObfuscationMode.RevealLastTyped,
    textObfuscationCharacter: Char = DefaultObfuscationCharacter,
    keyboardOptions: KeyboardOptions = SecureTextFieldKeyboardOptions,
    onKeyboardAction: KeyboardActionHandler? = null,
    shape: Shape = TextFieldDefaults.OutlinedTextFieldShape,
    colors: TextFieldColors = TextFieldDefaults.outlinedTextFieldColors(),
    interactionSource: MutableInteractionSource? = null
): Unit

Text fields allow users to enter text into a UI. OutlinedSecureTextField is specifically designed for password entry fields. It only supports a single line of content and comes with default settings that are appropriate for entering secure content. Additionally, some context menu actions like cut, copy, and drag are disabled for added security.

Outlined text fields have less visual emphasis than filled text fields. When they appear in places like forms, where many text fields are placed together, their reduced emphasis helps simplify the layout. For a filled version, see SecureTextField.

Parameters
`state: TextFieldState`	`TextFieldState` object that holds the internal editing state of this text field.
`modifier: Modifier = Modifier`	a `Modifier` for this text field
`enabled: Boolean = true`	controls the enabled state of the `OutlinedTextField`. When `false`, the text field will be neither editable nor focusable, the input of the text field will not be selectable, visually text field will appear in the disabled UI state
`textStyle: TextStyle = LocalTextStyle.current`	the style to be applied to the input text. The default `textStyle` uses the `LocalTextStyle` defined by the theme
`label: (@Composable () -> Unit)? = null`	the optional label to be displayed inside the text field container. The default text style for internal `Text` is `Typography.caption` when the text field is in focus and `Typography.subtitle1` when the text field is not in focus
`placeholder: (@Composable () -> Unit)? = null`	the optional placeholder to be displayed when the text field is in focus and the input text is empty. The default text style for internal `Text` is `Typography.subtitle1`
`leadingIcon: (@Composable () -> Unit)? = null`	the optional leading icon to be displayed at the beginning of the text field container
`trailingIcon: (@Composable () -> Unit)? = null`	the optional trailing icon to be displayed at the end of the text field container
`isError: Boolean = false`	indicates if the text field's current value is in error. If set to true, the label, bottom indicator and trailing icon by default will be displayed in error color
`inputTransformation: InputTransformation? = null`	Optional `InputTransformation` that will be used to transform changes to the `TextFieldState` made by the user. The transformation will be applied to changes made by hardware and software keyboard events, pasting or dropping text, accessibility services, and tests. The transformation will not be applied when changing the `state` programmatically, or when the transformation is changed. If the transformation is changed on an existing text field, it will be applied to the next user edit. the transformation will not immediately affect the current `state`.
`textObfuscationMode: TextObfuscationMode = TextObfuscationMode.RevealLastTyped`	the method used to obscure the input text.
`textObfuscationCharacter: Char = DefaultObfuscationCharacter`	the character to use while obfuscating the text. It doesn't have an effect when `textObfuscationMode` is set to `TextObfuscationMode.Visible`.
`keyboardOptions: KeyboardOptions = SecureTextFieldKeyboardOptions`	software keyboard options that contains configuration such as `KeyboardType` and `ImeAction`
`onKeyboardAction: KeyboardActionHandler? = null`	Called when the user presses the action button in the input method editor (IME), or by pressing the enter key on a hardware keyboard. By default this parameter is null, and would execute the default behavior for a received IME Action e.g., `ImeAction.Done` would close the keyboard, `ImeAction.Next` would switch the focus to the next focusable item on the screen.
`shape: Shape = TextFieldDefaults.OutlinedTextFieldShape`	the shape of the text field's border
`colors: TextFieldColors = TextFieldDefaults.outlinedTextFieldColors()`	`TextFieldColors` that will be used to resolve color of the text and content (including label, placeholder, leading and trailing icons, border) for this text field in different states. See `TextFieldDefaults.outlinedTextFieldColors`
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this text field. You can use this to change the text field's appearance or preview the text field in different states. Note that if `null` is provided, interactions will still happen internally.

OutlinedTextField

Cmn

Material Design outlined text field.

Added in 1.8.0

@Composable
fun OutlinedTextField(
    state: TextFieldState,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    readOnly: Boolean = false,
    textStyle: TextStyle = LocalTextStyle.current,
    label: (@Composable () -> Unit)? = null,
    placeholder: (@Composable () -> Unit)? = null,
    leadingIcon: (@Composable () -> Unit)? = null,
    trailingIcon: (@Composable () -> Unit)? = null,
    isError: Boolean = false,
    inputTransformation: InputTransformation? = null,
    outputTransformation: OutputTransformation? = null,
    keyboardOptions: KeyboardOptions = KeyboardOptions.Default,
    onKeyboardAction: KeyboardActionHandler? = null,
    lineLimits: TextFieldLineLimits = TextFieldLineLimits.Default,
    scrollState: ScrollState = rememberScrollState(),
    shape: Shape = TextFieldDefaults.OutlinedTextFieldShape,
    colors: TextFieldColors = TextFieldDefaults.outlinedTextFieldColors(),
    interactionSource: MutableInteractionSource? = null
): Unit

Outlined text field
image

If you are looking for a filled version, see TextField. For a text field specifically designed for passwords or other secure content, see OutlinedSecureTextField.

This overload of OutlinedTextField uses TextFieldState to keep track of its text content and position of the cursor or selection.

See example usage:

import androidx.compose.foundation.text.input.TextFieldLineLimits
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.OutlinedTextField
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.remember

OutlinedTextField(
    state = rememberTextFieldState(),
    label = { Text("Label") },
    lineLimits = TextFieldLineLimits.SingleLine,
)

import androidx.compose.foundation.text.input.TextFieldLineLimits
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.OutlinedTextField
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.remember
import androidx.compose.ui.text.TextRange

val state = rememberTextFieldState("Initial text", TextRange(0, 12))
OutlinedTextField(
    state = state,
    label = { Text("Label") },
    lineLimits = TextFieldLineLimits.SingleLine,
)

Parameters
`state: TextFieldState`	`TextFieldState` object that holds the internal editing state of this text field.
`modifier: Modifier = Modifier`	a `Modifier` for this text field
`enabled: Boolean = true`	controls the enabled state of the `OutlinedTextField`. When `false`, the text field will be neither editable nor focusable, the input of the text field will not be selectable, visually text field will appear in the disabled UI state
`readOnly: Boolean = false`	controls the editable state of the `OutlinedTextField`. When `true`, the text field can not be modified, however, a user can focus it and copy text from it. Read-only text fields are usually used to display pre-filled forms that user can not edit
`textStyle: TextStyle = LocalTextStyle.current`	the style to be applied to the input text. The default `textStyle` uses the `LocalTextStyle` defined by the theme
`label: (@Composable () -> Unit)? = null`	the optional label to be displayed inside the text field container. The default text style for internal `Text` is `Typography.caption` when the text field is in focus and `Typography.subtitle1` when the text field is not in focus
`placeholder: (@Composable () -> Unit)? = null`	the optional placeholder to be displayed when the text field is in focus and the input text is empty. The default text style for internal `Text` is `Typography.subtitle1`
`leadingIcon: (@Composable () -> Unit)? = null`	the optional leading icon to be displayed at the beginning of the text field container
`trailingIcon: (@Composable () -> Unit)? = null`	the optional trailing icon to be displayed at the end of the text field container
`isError: Boolean = false`	indicates if the text field's current value is in error. If set to true, the label, bottom indicator and trailing icon by default will be displayed in error color
`inputTransformation: InputTransformation? = null`	Optional `InputTransformation` that will be used to transform changes to the `TextFieldState` made by the user. The transformation will be applied to changes made by hardware and software keyboard events, pasting or dropping text, accessibility services, and tests. The transformation will not be applied when changing the `state` programmatically, or when the transformation is changed. If the transformation is changed on an existing text field, it will be applied to the next user edit. the transformation will not immediately affect the current `state`.
`outputTransformation: OutputTransformation? = null`	An `OutputTransformation` that transforms how the contents of the text field are presented.
`keyboardOptions: KeyboardOptions = KeyboardOptions.Default`	software keyboard options that contains configuration such as `KeyboardType` and `ImeAction`
`onKeyboardAction: KeyboardActionHandler? = null`	Called when the user presses the action button in the input method editor (IME), or by pressing the enter key on a hardware keyboard. By default this parameter is null, and would execute the default behavior for a received IME Action e.g., `ImeAction.Done` would close the keyboard, `ImeAction.Next` would switch the focus to the next focusable item on the screen.
`lineLimits: TextFieldLineLimits = TextFieldLineLimits.Default`	Whether the text field should be `SingleLine`, scroll horizontally, and ignore newlines; or `MultiLine` and grow and scroll vertically. If `SingleLine` is passed, all newline characters ('\n') within the text will be replaced with regular whitespace (' '), ensuring that the contents of the text field are presented in a single line.
`scrollState: ScrollState = rememberScrollState()`	Scroll state that manages either horizontal or vertical scroll of the text field. If `lineLimits` is `SingleLine`, this text field is treated as single line with horizontal scroll behavior. In other cases the text field becomes vertically scrollable.
`shape: Shape = TextFieldDefaults.OutlinedTextFieldShape`	the shape of the text field's border
`colors: TextFieldColors = TextFieldDefaults.outlinedTextFieldColors()`	`TextFieldColors` that will be used to resolve color of the text and content (including label, placeholder, leading and trailing icons, border) for this text field in different states. See `TextFieldDefaults.outlinedTextFieldColors`
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this text field. You can use this to change the text field's appearance or preview the text field in different states. Note that if `null` is provided, interactions will still happen internally.

OutlinedTextField

Cmn

Material Design outlined text field.

Added in 1.4.0

@Composable
fun OutlinedTextField(
    value: String,
    onValueChange: (String) -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    readOnly: Boolean = false,
    textStyle: TextStyle = LocalTextStyle.current,
    label: (@Composable () -> Unit)? = null,
    placeholder: (@Composable () -> Unit)? = null,
    leadingIcon: (@Composable () -> Unit)? = null,
    trailingIcon: (@Composable () -> Unit)? = null,
    isError: Boolean = false,
    visualTransformation: VisualTransformation = VisualTransformation.None,
    keyboardOptions: KeyboardOptions = KeyboardOptions.Default,
    keyboardActions: KeyboardActions = KeyboardActions.Default,
    singleLine: Boolean = false,
    maxLines: Int = if (singleLine) 1 else Int.MAX_VALUE,
    minLines: Int = 1,
    interactionSource: MutableInteractionSource? = null,
    shape: Shape = TextFieldDefaults.OutlinedTextFieldShape,
    colors: TextFieldColors = TextFieldDefaults.outlinedTextFieldColors()
): Unit

Outlined text field
image

If apart from input text change you also want to observe the cursor location, selection range, or IME composition use the OutlinedTextField overload with the TextFieldValue parameter instead.

Parameters
`value: String`	the input text to be shown in the text field
`onValueChange: (String) -> Unit`	the callback that is triggered when the input service updates the text. An updated text comes as a parameter of the callback
`modifier: Modifier = Modifier`	a `Modifier` for this text field
`enabled: Boolean = true`	controls the enabled state of the `OutlinedTextField`. When `false`, the text field will be neither editable nor focusable, the input of the text field will not be selectable, visually text field will appear in the disabled UI state
`readOnly: Boolean = false`	controls the editable state of the `OutlinedTextField`. When `true`, the text field can not be modified, however, a user can focus it and copy text from it. Read-only text fields are usually used to display pre-filled forms that user can not edit
`textStyle: TextStyle = LocalTextStyle.current`	the style to be applied to the input text. The default `textStyle` uses the `LocalTextStyle` defined by the theme
`label: (@Composable () -> Unit)? = null`	the optional label to be displayed inside the text field container. The default text style for internal `Text` is `Typography.caption` when the text field is in focus and `Typography.subtitle1` when the text field is not in focus
`placeholder: (@Composable () -> Unit)? = null`	the optional placeholder to be displayed when the text field is in focus and the input text is empty. The default text style for internal `Text` is `Typography.subtitle1`
`leadingIcon: (@Composable () -> Unit)? = null`	the optional leading icon to be displayed at the beginning of the text field container
`trailingIcon: (@Composable () -> Unit)? = null`	the optional trailing icon to be displayed at the end of the text field container
`isError: Boolean = false`	indicates if the text field's current value is in error. If set to true, the label, bottom indicator and trailing icon by default will be displayed in error color
`visualTransformation: VisualTransformation = VisualTransformation.None`	transforms the visual representation of the input `value` For example, you can use `PasswordVisualTransformation` to create a password text field. By default no visual transformation is applied
`keyboardOptions: KeyboardOptions = KeyboardOptions.Default`	software keyboard options that contains configuration such as `KeyboardType` and `ImeAction`
`keyboardActions: KeyboardActions = KeyboardActions.Default`	when the input service emits an IME action, the corresponding callback is called. Note that this IME action may be different from what you specified in `KeyboardOptions.imeAction`
`singleLine: Boolean = false`	when set to true, this text field becomes a single horizontally scrolling text field instead of wrapping onto multiple lines. The keyboard will be informed to not show the return key as the `ImeAction`. Note that `maxLines` parameter will be ignored as the maxLines attribute will be automatically set to 1
`maxLines: Int = if (singleLine) 1 else Int.MAX_VALUE`	the maximum height in terms of maximum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`. This parameter is ignored when `singleLine` is true.
`minLines: Int = 1`	the minimum height in terms of minimum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`. This parameter is ignored when `singleLine` is true.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this text field. You can use this to change the text field's appearance or preview the text field in different states. Note that if `null` is provided, interactions will still happen internally.
`shape: Shape = TextFieldDefaults.OutlinedTextFieldShape`	the shape of the text field's border
`colors: TextFieldColors = TextFieldDefaults.outlinedTextFieldColors()`	`TextFieldColors` that will be used to resolve color of the text and content (including label, placeholder, leading and trailing icons, border) for this text field in different states. See `TextFieldDefaults.outlinedTextFieldColors`

OutlinedTextField

Cmn

Material Design outlined text field.

Added in 1.4.0

@Composable
fun OutlinedTextField(
    value: TextFieldValue,
    onValueChange: (TextFieldValue) -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    readOnly: Boolean = false,
    textStyle: TextStyle = LocalTextStyle.current,
    label: (@Composable () -> Unit)? = null,
    placeholder: (@Composable () -> Unit)? = null,
    leadingIcon: (@Composable () -> Unit)? = null,
    trailingIcon: (@Composable () -> Unit)? = null,
    isError: Boolean = false,
    visualTransformation: VisualTransformation = VisualTransformation.None,
    keyboardOptions: KeyboardOptions = KeyboardOptions.Default,
    keyboardActions: KeyboardActions = KeyboardActions(),
    singleLine: Boolean = false,
    maxLines: Int = if (singleLine) 1 else Int.MAX_VALUE,
    minLines: Int = 1,
    interactionSource: MutableInteractionSource? = null,
    shape: Shape = TextFieldDefaults.OutlinedTextFieldShape,
    colors: TextFieldColors = TextFieldDefaults.outlinedTextFieldColors()
): Unit

Outlined text field
image

This overload provides access to the input text, cursor position and selection range and IME composition. If you only want to observe an input text change, use the OutlinedTextField overload with the String parameter instead.

Parameters
`value: TextFieldValue`	the input `TextFieldValue` to be shown in the text field
`onValueChange: (TextFieldValue) -> Unit`	the callback that is triggered when the input service updates values in `TextFieldValue`. An updated `TextFieldValue` comes as a parameter of the callback
`modifier: Modifier = Modifier`	a `Modifier` for this text field
`enabled: Boolean = true`	controls the enabled state of the `OutlinedTextField`. When `false`, the text field will be neither editable nor focusable, the input of the text field will not be selectable, visually text field will appear in the disabled UI state
`readOnly: Boolean = false`	controls the editable state of the `OutlinedTextField`. When `true`, the text field can not be modified, however, a user can focus it and copy text from it. Read-only text fields are usually used to display pre-filled forms that user can not edit
`textStyle: TextStyle = LocalTextStyle.current`	the style to be applied to the input text. The default `textStyle` uses the `LocalTextStyle` defined by the theme
`label: (@Composable () -> Unit)? = null`	the optional label to be displayed inside the text field container. The default text style for internal `Text` is `Typography.caption` when the text field is in focus and `Typography.subtitle1` when the text field is not in focus
`placeholder: (@Composable () -> Unit)? = null`	the optional placeholder to be displayed when the text field is in focus and the input text is empty. The default text style for internal `Text` is `Typography.subtitle1`
`leadingIcon: (@Composable () -> Unit)? = null`	the optional leading icon to be displayed at the beginning of the text field container
`trailingIcon: (@Composable () -> Unit)? = null`	the optional trailing icon to be displayed at the end of the text field container
`isError: Boolean = false`	indicates if the text field's current value is in error state. If set to true, the label, bottom indicator and trailing icon by default will be displayed in error color
`visualTransformation: VisualTransformation = VisualTransformation.None`	transforms the visual representation of the input `value` For example, you can use `PasswordVisualTransformation` to create a password text field. By default no visual transformation is applied
`keyboardOptions: KeyboardOptions = KeyboardOptions.Default`	software keyboard options that contains configuration such as `KeyboardType` and `ImeAction`
`keyboardActions: KeyboardActions = KeyboardActions()`	when the input service emits an IME action, the corresponding callback is called. Note that this IME action may be different from what you specified in `KeyboardOptions.imeAction`
`singleLine: Boolean = false`	when set to true, this text field becomes a single horizontally scrolling text field instead of wrapping onto multiple lines. The keyboard will be informed to not show the return key as the `ImeAction`. Note that `maxLines` parameter will be ignored as the maxLines attribute will be automatically set to 1
`maxLines: Int = if (singleLine) 1 else Int.MAX_VALUE`	the maximum height in terms of maximum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`. This parameter is ignored when `singleLine` is true.
`minLines: Int = 1`	the minimum height in terms of minimum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`. This parameter is ignored when `singleLine` is true.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this text field. You can use this to change the text field's appearance or preview the text field in different states. Note that if `null` is provided, interactions will still happen internally.
`shape: Shape = TextFieldDefaults.OutlinedTextFieldShape`	the shape of the text field's border
`colors: TextFieldColors = TextFieldDefaults.outlinedTextFieldColors()`	`TextFieldColors` that will be used to resolve color of the text and content (including label, placeholder, leading and trailing icons, border) for this text field in different states. See `TextFieldDefaults.outlinedTextFieldColors`

ProvideTextStyle

Cmn

Added in 1.0.0

@Composable
fun ProvideTextStyle(value: TextStyle, content: @Composable () -> Unit): Unit

This function is used to set the current value of LocalTextStyle, merging the given style with the current style values for any missing attributes. Any Text components included in this component's content will be styled with this style unless styled explicitly.

See also
`LocalTextStyle`

RadioButton

Cmn

Material Design radio button

Added in 1.0.0

@Composable
fun RadioButton(
    selected: Boolean,
    onClick: (() -> Unit)?,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    colors: RadioButtonColors = RadioButtonDefaults.colors()
): Unit

Radio buttons allow users to select one option from a set.

Radio buttons
image

import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.selection.selectable
import androidx.compose.foundation.selection.selectableGroup
import androidx.compose.material.RadioButton
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier

// We have two radio buttons and only one can be selected
var state by remember { mutableStateOf(true) }
// Note that Modifier.selectableGroup() is essential to ensure correct accessibility behavior
Row(Modifier.selectableGroup()) {
    RadioButton(selected = state, onClick = { state = true })
    RadioButton(selected = !state, onClick = { state = false })
}

RadioButtons can be combined together with Text in the desired layout (e.g. Column or Row) to achieve radio group-like behaviour, where the entire layout is selectable:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.selection.selectable
import androidx.compose.foundation.selection.selectableGroup
import androidx.compose.material.MaterialTheme
import androidx.compose.material.RadioButton
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.semantics.role
import androidx.compose.ui.unit.dp

val radioOptions = listOf("Calls", "Missed", "Friends")
val (selectedOption, onOptionSelected) = remember { mutableStateOf(radioOptions[0]) }
// Note that Modifier.selectableGroup() is essential to ensure correct accessibility behavior
Column(Modifier.selectableGroup()) {
    radioOptions.forEach { text ->
        Row(
            Modifier.fillMaxWidth()
                .height(56.dp)
                .selectable(
                    selected = (text == selectedOption),
                    onClick = { onOptionSelected(text) },
                    role = Role.RadioButton,
                )
                .padding(horizontal = 16.dp),
            verticalAlignment = Alignment.CenterVertically,
        ) {
            RadioButton(
                selected = (text == selectedOption),
                onClick = null, // null recommended for accessibility with screenreaders
            )
            Text(
                text = text,
                style = MaterialTheme.typography.body1.merge(),
                modifier = Modifier.padding(start = 16.dp),
            )
        }
    }
}

Parameters
`selected: Boolean`	whether this radio button is selected or not
`onClick: (() -> Unit)?`	callback to be invoked when the RadioButton is clicked. If null, then this RadioButton will not handle input events, and only act as a visual indicator of `selected` state
`modifier: Modifier = Modifier`	Modifier to be applied to the radio button
`enabled: Boolean = true`	Controls the enabled state of the `RadioButton`. When `false`, this button will not be selectable and appears disabled
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this radio button. You can use this to change the radio button's appearance or preview the radio button in different states. Note that if `null` is provided, interactions will still happen internally.
`colors: RadioButtonColors = RadioButtonDefaults.colors()`	`RadioButtonColors` that will be used to resolve the color used for this RadioButton in different states. See `RadioButtonDefaults.colors`.

RangeSlider

Cmn

Added in 1.0.0

@Composable
@ExperimentalMaterialApi
fun RangeSlider(
    value: ClosedFloatingPointRange<Float>,
    onValueChange: (ClosedFloatingPointRange<Float>) -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    valueRange: ClosedFloatingPointRange<Float> = 0f..1f,
    steps: @IntRange(from = 0) Int = 0,
    onValueChangeFinished: (() -> Unit)? = null,
    colors: SliderColors = SliderDefaults.colors()
): Unit

Material Design slider

Range Sliders expand upon Slider using the same concepts but allow the user to select 2 values.

The two values are still bounded by the value range but they also cannot cross each other.

Use continuous Range Sliders to allow users to make meaningful selections that don’t require a specific values:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.material.RangeSlider
import androidx.compose.material.Slider
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

var sliderPosition by remember { mutableStateOf(0f..100f) }
Column(modifier = Modifier.padding(horizontal = 16.dp)) {
    val rangeStart = "%.2f".format(sliderPosition.start)
    val rangeEnd = "%.2f".format(sliderPosition.endInclusive)
    Text(text = "$rangeStart .. $rangeEnd")
    RangeSlider(
        value = sliderPosition,
        onValueChange = { sliderPosition = it },
        valueRange = 0f..100f,
        onValueChangeFinished = {
            // launch some business logic update with the state you hold
            // viewModel.updateSelectedSliderValue(sliderPosition)
        },
    )
}

You can allow the user to choose only between predefined set of values by specifying the amount of steps between min and max values:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.material.MaterialTheme
import androidx.compose.material.RangeSlider
import androidx.compose.material.Slider
import androidx.compose.material.SliderDefaults
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

var sliderPosition by remember { mutableStateOf(0f..100f) }
Column(modifier = Modifier.padding(horizontal = 16.dp)) {
    val rangeStart = sliderPosition.start.roundToInt()
    val rangeEnd = sliderPosition.endInclusive.roundToInt()
    Text(text = "$rangeStart .. $rangeEnd")
    RangeSlider(
        value = sliderPosition,
        onValueChange = { sliderPosition = it },
        valueRange = 0f..100f,
        onValueChangeFinished = {
            // launch some business logic update with the state you hold
            // viewModel.updateSelectedSliderValue(sliderPosition)
        },
        // Only allow multiples of 10. Excluding the endpoints of `valueRange`,
        // there are 9 steps (10, 20, ..., 90).
        steps = 9,
        colors =
            SliderDefaults.colors(
                thumbColor = MaterialTheme.colors.secondary,
                activeTrackColor = MaterialTheme.colors.secondary,
            ),
    )
}

Parameters
`value: ClosedFloatingPointRange<Float>`	current values of the RangeSlider. If either value is outside of `valueRange` provided, it will be coerced to this range.
`onValueChange: (ClosedFloatingPointRange<Float>) -> Unit`	lambda in which values should be updated
`modifier: Modifier = Modifier`	modifiers for the Range Slider layout
`enabled: Boolean = true`	whether or not component is enabled and can we interacted with or not
`valueRange: ClosedFloatingPointRange<Float> = 0f..1f`	range of values that Range Slider values can take. Passed `value` will be coerced to this range
`steps: @IntRange(from = 0) Int = 0`	if positive, specifies the amount of discrete allowable values between the endpoints of `valueRange`. For example, a range from 0 to 10 with 4 `steps` allows 4 values evenly distributed between 0 and 10 (i.e., 2, 4, 6, 8). If `steps` is 0, the slider will behave continuously and allow any value from the range. Must not be negative.
`onValueChangeFinished: (() -> Unit)? = null`	lambda to be invoked when value change has ended. This callback shouldn't be used to update the range slider values (use `onValueChange` for that), but rather to know when the user has completed selecting a new value by ending a drag or a click.
`colors: SliderColors = SliderDefaults.colors()`	`SliderColors` that will be used to determine the color of the Range Slider parts in different state. See `SliderDefaults.colors` to customize.

Scaffold

Cmn

@Composable
fun Scaffold(
    modifier: Modifier = Modifier,
    scaffoldState: ScaffoldState = rememberScaffoldState(),
    topBar: @Composable () -> Unit = {},
    bottomBar: @Composable () -> Unit = {},
    snackbarHost: @Composable (SnackbarHostState) -> Unit = { SnackbarHost(it) },
    floatingActionButton: @Composable () -> Unit = {},
    floatingActionButtonPosition: FabPosition = FabPosition.End,
    isFloatingActionButtonDocked: Boolean = false,
    drawerContent: (@Composable ColumnScope.() -> Unit)? = null,
    drawerGesturesEnabled: Boolean = true,
    drawerShape: Shape = MaterialTheme.shapes.large,
    drawerElevation: Dp = DrawerDefaults.Elevation,
    drawerBackgroundColor: Color = MaterialTheme.colors.surface,
    drawerContentColor: Color = contentColorFor(drawerBackgroundColor),
    drawerScrimColor: Color = DrawerDefaults.scrimColor,
    backgroundColor: Color = MaterialTheme.colors.background,
    contentColor: Color = contentColorFor(backgroundColor),
    content: @Composable (PaddingValues) -> Unit
): Unit

Material Design layout

Scaffold implements the basic Material Design visual layout structure.

This component provides API to put together several Material components to construct your screen, by ensuring proper layout strategy for them and collecting necessary data so these components will work together correctly.

For similar components that implement different layout structures, see BackdropScaffold, which uses a backdrop as the centerpiece of the screen, and BottomSheetScaffold, which uses a persistent bottom sheet as the centerpiece of the screen.

Simple example of a Scaffold with TopAppBar, FloatingActionButton and drawer:

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.FabPosition
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Text
import androidx.compose.material.TopAppBar
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Menu
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    drawerContent = { Text("Drawer content") },
    topBar = {
        TopAppBar(
            title = { Text("Simple Scaffold Screen") },
            navigationIcon = {
                IconButton(onClick = { scope.launch { scaffoldState.drawerState.open() } }) {
                    Icon(Icons.Filled.Menu, contentDescription = "Localized description")
                }
            },
        )
    },
    floatingActionButtonPosition = FabPosition.End,
    floatingActionButton = {
        ExtendedFloatingActionButton(
            text = { Text("Inc") },
            onClick = { /* fab click handler */ },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        LazyColumn(contentPadding = innerPadding) {
            items(count = 100) {
                Box(Modifier.fillMaxWidth().height(50.dp).background(colors[it % colors.size]))
            }
        }
    },
)

More fancy usage with BottomAppBar with cutout and docked FloatingActionButton, which animates its shape when clicked:

import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.TweenSpec
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.CutCornerShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.BottomAppBar
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.FabPosition
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Text
import androidx.compose.material.TopAppBar
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Menu
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.getValue
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val scaffoldState = rememberScaffoldState()

// Consider negative values to mean 'cut corner' and positive values to mean 'round corner'
val sharpEdgePercent = -50f
val roundEdgePercent = 45f
// Start with sharp edges
val animatedProgress = remember { Animatable(sharpEdgePercent) }
// Create a coroutineScope for the animation
val coroutineScope = rememberCoroutineScope()
// animation value to animate shape
val progress = animatedProgress.value.roundToInt()

// When progress is 0, there is no modification to the edges so we are just drawing a rectangle.
// This allows for a smooth transition between cut corners and round corners.
val fabShape =
    if (progress < 0) {
        CutCornerShape(abs(progress))
    } else if (progress == roundEdgePercent.toInt()) {
        CircleShape
    } else {
        RoundedCornerShape(progress)
    }
// lambda to call to trigger shape animation
val changeShape: () -> Unit = {
    val target = animatedProgress.targetValue
    val nextTarget = if (target == roundEdgePercent) sharpEdgePercent else roundEdgePercent
    coroutineScope.launch {
        animatedProgress.animateTo(
            targetValue = nextTarget,
            animationSpec = TweenSpec(durationMillis = 600),
        )
    }
}

Scaffold(
    scaffoldState = scaffoldState,
    drawerContent = { Text("Drawer content") },
    topBar = { TopAppBar(title = { Text("Scaffold with bottom cutout") }) },
    bottomBar = {
        BottomAppBar(cutoutShape = fabShape) {
            IconButton(
                onClick = { coroutineScope.launch { scaffoldState.drawerState.open() } }
            ) {
                Icon(Icons.Filled.Menu, contentDescription = "Localized description")
            }
        }
    },
    floatingActionButton = {
        ExtendedFloatingActionButton(
            text = { Text("Change shape") },
            onClick = changeShape,
            shape = fabShape,
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    floatingActionButtonPosition = FabPosition.Center,
    isFloatingActionButtonDocked = true,
    content = { innerPadding ->
        LazyColumn(contentPadding = innerPadding) {
            items(count = 100) {
                Box(Modifier.fillMaxWidth().height(50.dp).background(colors[it % colors.size]))
            }
        }
    },
)

To show a Snackbar, use SnackbarHostState.showSnackbar. Scaffold state already have ScaffoldState.snackbarHostState when created

import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Snackbar
import androidx.compose.material.Text
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    floatingActionButton = {
        var clickCount by remember { mutableStateOf(0) }
        ExtendedFloatingActionButton(
            text = { Text("Show snackbar") },
            onClick = {
                // show snackbar as a suspend function
                scope.launch {
                    scaffoldState.snackbarHostState.showSnackbar("Snackbar # ${++clickCount}")
                }
            },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        Text(
            text = "Body content",
            modifier = Modifier.padding(innerPadding).fillMaxSize().wrapContentSize(),
        )
    },
)

Parameters
`modifier: Modifier = Modifier`	optional Modifier for the root of the `Scaffold`
`scaffoldState: ScaffoldState = rememberScaffoldState()`	state of this scaffold widget. It contains the state of the screen, e.g. variables to provide manual control over the drawer behavior, sizes of components, etc
`topBar: @Composable () -> Unit = {}`	top app bar of the screen. Consider using `TopAppBar`.
`bottomBar: @Composable () -> Unit = {}`	bottom bar of the screen. Consider using `BottomAppBar`.
`snackbarHost: @Composable (SnackbarHostState) -> Unit = { SnackbarHost(it) }`	component to host `Snackbar`s that are pushed to be shown via `SnackbarHostState.showSnackbar`. Usually it's a `SnackbarHost`
`floatingActionButton: @Composable () -> Unit = {}`	Main action button of your screen. Consider using `FloatingActionButton` for this slot.
`floatingActionButtonPosition: FabPosition = FabPosition.End`	position of the FAB on the screen. See `FabPosition` for possible options available.
`isFloatingActionButtonDocked: Boolean = false`	whether `floatingActionButton` should overlap with `bottomBar` for half a height, if `bottomBar` exists. Ignored if there's no `bottomBar` or no `floatingActionButton`.
`drawerContent: (@Composable ColumnScope.() -> Unit)? = null`	content of the Drawer sheet that can be pulled from the left side (right for RTL).
`drawerGesturesEnabled: Boolean = true`	whether or not drawer (if set) can be interacted with via gestures
`drawerShape: Shape = MaterialTheme.shapes.large`	shape of the drawer sheet (if set)
`drawerElevation: Dp = DrawerDefaults.Elevation`	drawer sheet elevation. This controls the size of the shadow below the drawer sheet (if set)
`drawerBackgroundColor: Color = MaterialTheme.colors.surface`	background color to be used for the drawer sheet
`drawerContentColor: Color = contentColorFor(drawerBackgroundColor)`	color of the content to use inside the drawer sheet. Defaults to either the matching content color for `drawerBackgroundColor`, or, if it is not a color from the theme, this will keep the same value set above this Surface.
`drawerScrimColor: Color = DrawerDefaults.scrimColor`	color of the scrim that obscures content when the drawer is open
`backgroundColor: Color = MaterialTheme.colors.background`	background of the scaffold body
`contentColor: Color = contentColorFor(backgroundColor)`	color of the content in scaffold body. Defaults to either the matching content color for `backgroundColor`, or, if it is not a color from the theme, this will keep the same value set above this Surface.
`content: @Composable (PaddingValues) -> Unit`	content of your screen. The lambda receives an `PaddingValues` that should be applied to the content root via Modifier.padding and `Modifier.consumeWindowInsets` to properly offset top and bottom bars. If using Modifier.verticalScroll, apply this modifier to the child of the scroll, and not on the scroll itself.

Scaffold

Cmn

@Composable
fun Scaffold(
    contentWindowInsets: WindowInsets,
    modifier: Modifier = Modifier,
    scaffoldState: ScaffoldState = rememberScaffoldState(),
    topBar: @Composable () -> Unit = {},
    bottomBar: @Composable () -> Unit = {},
    snackbarHost: @Composable (SnackbarHostState) -> Unit = { SnackbarHost(it) },
    floatingActionButton: @Composable () -> Unit = {},
    floatingActionButtonPosition: FabPosition = FabPosition.End,
    isFloatingActionButtonDocked: Boolean = false,
    drawerContent: (@Composable ColumnScope.() -> Unit)? = null,
    drawerGesturesEnabled: Boolean = true,
    drawerShape: Shape = MaterialTheme.shapes.large,
    drawerElevation: Dp = DrawerDefaults.Elevation,
    drawerBackgroundColor: Color = MaterialTheme.colors.surface,
    drawerContentColor: Color = contentColorFor(drawerBackgroundColor),
    drawerScrimColor: Color = DrawerDefaults.scrimColor,
    backgroundColor: Color = MaterialTheme.colors.background,
    contentColor: Color = contentColorFor(backgroundColor),
    content: @Composable (PaddingValues) -> Unit
): Unit

Material Design layout

Scaffold implements the basic Material Design visual layout structure.

This particular overload provides ability to specify WindowInsets. Recommended value can be found in ScaffoldDefaults.contentWindowInsets.

Simple example of a Scaffold with TopAppBar, FloatingActionButton and drawer:

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.FabPosition
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Text
import androidx.compose.material.TopAppBar
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Menu
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    drawerContent = { Text("Drawer content") },
    topBar = {
        TopAppBar(
            title = { Text("Simple Scaffold Screen") },
            navigationIcon = {
                IconButton(onClick = { scope.launch { scaffoldState.drawerState.open() } }) {
                    Icon(Icons.Filled.Menu, contentDescription = "Localized description")
                }
            },
        )
    },
    floatingActionButtonPosition = FabPosition.End,
    floatingActionButton = {
        ExtendedFloatingActionButton(
            text = { Text("Inc") },
            onClick = { /* fab click handler */ },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        LazyColumn(contentPadding = innerPadding) {
            items(count = 100) {
                Box(Modifier.fillMaxWidth().height(50.dp).background(colors[it % colors.size]))
            }
        }
    },
)

More fancy usage with BottomAppBar with cutout and docked FloatingActionButton, which animates its shape when clicked:

import androidx.compose.animation.core.Animatable
import androidx.compose.animation.core.TweenSpec
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.shape.CircleShape
import androidx.compose.foundation.shape.CutCornerShape
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.BottomAppBar
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.FabPosition
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Text
import androidx.compose.material.TopAppBar
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Menu
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.getValue
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val scaffoldState = rememberScaffoldState()

// Consider negative values to mean 'cut corner' and positive values to mean 'round corner'
val sharpEdgePercent = -50f
val roundEdgePercent = 45f
// Start with sharp edges
val animatedProgress = remember { Animatable(sharpEdgePercent) }
// Create a coroutineScope for the animation
val coroutineScope = rememberCoroutineScope()
// animation value to animate shape
val progress = animatedProgress.value.roundToInt()

// When progress is 0, there is no modification to the edges so we are just drawing a rectangle.
// This allows for a smooth transition between cut corners and round corners.
val fabShape =
    if (progress < 0) {
        CutCornerShape(abs(progress))
    } else if (progress == roundEdgePercent.toInt()) {
        CircleShape
    } else {
        RoundedCornerShape(progress)
    }
// lambda to call to trigger shape animation
val changeShape: () -> Unit = {
    val target = animatedProgress.targetValue
    val nextTarget = if (target == roundEdgePercent) sharpEdgePercent else roundEdgePercent
    coroutineScope.launch {
        animatedProgress.animateTo(
            targetValue = nextTarget,
            animationSpec = TweenSpec(durationMillis = 600),
        )
    }
}

Scaffold(
    scaffoldState = scaffoldState,
    drawerContent = { Text("Drawer content") },
    topBar = { TopAppBar(title = { Text("Scaffold with bottom cutout") }) },
    bottomBar = {
        BottomAppBar(cutoutShape = fabShape) {
            IconButton(
                onClick = { coroutineScope.launch { scaffoldState.drawerState.open() } }
            ) {
                Icon(Icons.Filled.Menu, contentDescription = "Localized description")
            }
        }
    },
    floatingActionButton = {
        ExtendedFloatingActionButton(
            text = { Text("Change shape") },
            onClick = changeShape,
            shape = fabShape,
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    floatingActionButtonPosition = FabPosition.Center,
    isFloatingActionButtonDocked = true,
    content = { innerPadding ->
        LazyColumn(contentPadding = innerPadding) {
            items(count = 100) {
                Box(Modifier.fillMaxWidth().height(50.dp).background(colors[it % colors.size]))
            }
        }
    },
)

To show a Snackbar, use SnackbarHostState.showSnackbar. Scaffold state already have ScaffoldState.snackbarHostState when created.

import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Snackbar
import androidx.compose.material.Text
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    floatingActionButton = {
        var clickCount by remember { mutableStateOf(0) }
        ExtendedFloatingActionButton(
            text = { Text("Show snackbar") },
            onClick = {
                // show snackbar as a suspend function
                scope.launch {
                    scaffoldState.snackbarHostState.showSnackbar("Snackbar # ${++clickCount}")
                }
            },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        Text(
            text = "Body content",
            modifier = Modifier.padding(innerPadding).fillMaxSize().wrapContentSize(),
        )
    },
)

Parameters
`contentWindowInsets: WindowInsets`	window insets to be passed to `content` slot via `PaddingValues` params. Scaffold will take the insets into account from the top/bottom only if the `topBar`/ `bottomBar` are not present, as the scaffold expect `topBar`/`bottomBar` to handle insets instead. Any insets consumed by other insets padding modifiers or `consumeWindowInsets` on a parent layout will be excluded from `contentWindowInsets`.
`modifier: Modifier = Modifier`	optional Modifier for the root of the `Scaffold`
`scaffoldState: ScaffoldState = rememberScaffoldState()`	state of this scaffold widget. It contains the state of the screen, e.g. variables to provide manual control over the drawer behavior, sizes of components, etc
`topBar: @Composable () -> Unit = {}`	top app bar of the screen. Consider using `TopAppBar`.
`bottomBar: @Composable () -> Unit = {}`	bottom bar of the screen. Consider using `BottomAppBar`.
`snackbarHost: @Composable (SnackbarHostState) -> Unit = { SnackbarHost(it) }`	component to host `Snackbar`s that are pushed to be shown via `SnackbarHostState.showSnackbar`. Usually it's a `SnackbarHost`
`floatingActionButton: @Composable () -> Unit = {}`	Main action button of your screen. Consider using `FloatingActionButton` for this slot.
`floatingActionButtonPosition: FabPosition = FabPosition.End`	position of the FAB on the screen. See `FabPosition` for possible options available.
`isFloatingActionButtonDocked: Boolean = false`	whether `floatingActionButton` should overlap with `bottomBar` for half a height, if `bottomBar` exists. Ignored if there's no `bottomBar` or no `floatingActionButton`.
`drawerContent: (@Composable ColumnScope.() -> Unit)? = null`	content of the Drawer sheet that can be pulled from the left side (right for RTL).
`drawerGesturesEnabled: Boolean = true`	whether or not drawer (if set) can be interacted with via gestures
`drawerShape: Shape = MaterialTheme.shapes.large`	shape of the drawer sheet (if set)
`drawerElevation: Dp = DrawerDefaults.Elevation`	drawer sheet elevation. This controls the size of the shadow below the drawer sheet (if set)
`drawerBackgroundColor: Color = MaterialTheme.colors.surface`	background color to be used for the drawer sheet
`drawerContentColor: Color = contentColorFor(drawerBackgroundColor)`	color of the content to use inside the drawer sheet. Defaults to either the matching content color for `drawerBackgroundColor`, or, if it is not a color from the theme, this will keep the same value set above this Surface.
`drawerScrimColor: Color = DrawerDefaults.scrimColor`	color of the scrim that obscures content when the drawer is open
`backgroundColor: Color = MaterialTheme.colors.background`	background of the scaffold body
`contentColor: Color = contentColorFor(backgroundColor)`	color of the content in scaffold body. Defaults to either the matching content color for `backgroundColor`, or, if it is not a color from the theme, this will keep the same value set above this Surface.
`content: @Composable (PaddingValues) -> Unit`	content of your screen. The lambda receives an `PaddingValues` that should be applied to the content root via Modifier.padding and `Modifier.consumeWindowInsets` to properly offset top and bottom bars. If using Modifier.verticalScroll, apply this modifier to the child of the scroll, and not on the scroll itself.

ScrollableTabRow

Cmn

Material Design scrollable tabs

@Composable
@UiComposable
fun ScrollableTabRow(
    selectedTabIndex: Int,
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    edgePadding: Dp = TabRowDefaults.ScrollableTabRowPadding,
    indicator: @Composable @UiComposable (tabPositions: List<TabPosition>) -> Unit = @Composable { tabPositions ->
            TabRowDefaults.Indicator(Modifier.tabIndicatorOffset(tabPositions[selectedTabIndex]))
        },
    divider: @Composable @UiComposable () -> Unit = @Composable { TabRowDefaults.Divider() },
    tabs: @Composable @UiComposable () -> Unit
): Unit

When a set of tabs cannot fit on screen, use scrollable tabs. Scrollable tabs can use longer text labels and a larger number of tabs. They are best used for browsing on touch interfaces.

Scrollable tabs
image

A ScrollableTabRow contains a row of Tabs, and displays an indicator underneath the currently selected tab. A ScrollableTabRow places its tabs offset from the starting edge, and allows scrolling to tabs that are placed off screen. For a fixed tab row that does not allow scrolling, and evenly places its tabs, see TabRow.

Parameters
`selectedTabIndex: Int`	the index of the currently selected tab
`modifier: Modifier = Modifier`	optional `Modifier` for this ScrollableTabRow
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for the ScrollableTabRow. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this ScrollableTabRow to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this ScrollableTabRow.
`edgePadding: Dp = TabRowDefaults.ScrollableTabRowPadding`	the padding between the starting and ending edge of ScrollableTabRow, and the tabs inside the ScrollableTabRow. This padding helps inform the user that this tab row can be scrolled, unlike a `TabRow`.
`indicator: @Composable @UiComposable (tabPositions: List<TabPosition>) -> Unit = @Composable { tabPositions -> TabRowDefaults.Indicator(Modifier.tabIndicatorOffset(tabPositions[selectedTabIndex])) }`	the indicator that represents which tab is currently selected. By default this will be a `TabRowDefaults.Indicator`, using a `TabRowDefaults.tabIndicatorOffset` modifier to animate its position. Note that this indicator will be forced to fill up the entire ScrollableTabRow, so you should use `TabRowDefaults.tabIndicatorOffset` or similar to animate the actual drawn indicator inside this space, and provide an offset from the start.
`divider: @Composable @UiComposable () -> Unit = @Composable { TabRowDefaults.Divider() }`	the divider displayed at the bottom of the ScrollableTabRow. This provides a layer of separation between the ScrollableTabRow and the content displayed underneath.
`tabs: @Composable @UiComposable () -> Unit`	the tabs inside this ScrollableTabRow. Typically this will be multiple `Tab`s. Each element inside this lambda will be measured and placed evenly across the TabRow, each taking up equal space.

SecureTextField

Cmn

Material Design filled text field for secure content

Added in 1.10.0

@Composable
fun SecureTextField(
    state: TextFieldState,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    textStyle: TextStyle = LocalTextStyle.current,
    label: (@Composable () -> Unit)? = null,
    placeholder: (@Composable () -> Unit)? = null,
    leadingIcon: (@Composable () -> Unit)? = null,
    trailingIcon: (@Composable () -> Unit)? = null,
    isError: Boolean = false,
    inputTransformation: InputTransformation? = null,
    textObfuscationMode: TextObfuscationMode = TextObfuscationMode.RevealLastTyped,
    textObfuscationCharacter: Char = DefaultObfuscationCharacter,
    keyboardOptions: KeyboardOptions = SecureTextFieldKeyboardOptions,
    onKeyboardAction: KeyboardActionHandler? = null,
    shape: Shape = TextFieldDefaults.TextFieldShape,
    colors: TextFieldColors = TextFieldDefaults.textFieldColors(),
    interactionSource: MutableInteractionSource? = null
): Unit

Text fields allow users to enter text into a UI. SecureTextField is specifically designed for password entry fields. It only supports a single line of content and comes with default settings that are appropriate for entering secure content. Additionally, some context menu actions like cut, copy, and drag are disabled for added security.

Filled text fields have more visual emphasis than outlined text fields, making them stand out when surrounded by other content and components. For an outlined version, see OutlinedSecureTextField.

Example of a password text field:

import androidx.compose.foundation.text.input.TextObfuscationMode
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.SecureTextField
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.material.icons.Icons
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.saveable.rememberSaveable

var passwordHidden by rememberSaveable { mutableStateOf(true) }
SecureTextField(
    state = rememberTextFieldState(),
    label = { Text("Enter password") },
    textObfuscationMode =
        if (passwordHidden) TextObfuscationMode.RevealLastTyped
        else TextObfuscationMode.Visible,
    trailingIcon = {
        IconButton(onClick = { passwordHidden = !passwordHidden }) {
            val visibilityIcon =
                if (passwordHidden) Icons.Filled.Visibility else Icons.Filled.VisibilityOff
            // Provide localized description for accessibility services
            val description = if (passwordHidden) "Show password" else "Hide password"
            Icon(imageVector = visibilityIcon, contentDescription = description)
        }
    },
)

Parameters
`state: TextFieldState`	`TextFieldState` object that holds the internal editing state of this text field.
`modifier: Modifier = Modifier`	a `Modifier` for this text field.
`enabled: Boolean = true`	controls the enabled state of the `TextField`. When `false`, the text field will be neither editable nor focusable, the input of the text field will not be selectable, visually text field will appear in the disabled UI state.
`textStyle: TextStyle = LocalTextStyle.current`	the style to be applied to the input text. The default `textStyle` uses the `LocalTextStyle` defined by the theme.
`label: (@Composable () -> Unit)? = null`	the optional label to be displayed inside the text field container. The default text style for internal `Text` is `Typography.caption` when the text field is in focus and `Typography.subtitle1` when the text field is not in focus.
`placeholder: (@Composable () -> Unit)? = null`	the optional placeholder to be displayed when the text field is in focus and the input text is empty. The default text style for internal `Text` is `Typography.subtitle1`.
`leadingIcon: (@Composable () -> Unit)? = null`	the optional leading icon to be displayed at the beginning of the text field container.
`trailingIcon: (@Composable () -> Unit)? = null`	the optional trailing icon to be displayed at the end of the text field container.
`isError: Boolean = false`	indicates if the text field's current value is in error. If set to true, the label, bottom indicator and trailing icon by default will be displayed in error color.
`inputTransformation: InputTransformation? = null`	Optional `InputTransformation` that will be used to transform changes to the `TextFieldState` made by the user. The transformation will be applied to changes made by hardware and software keyboard events, pasting or dropping text, accessibility services, and tests. The transformation will not be applied when changing the `state` programmatically, or when the transformation is changed. If the transformation is changed on an existing text field, it will be applied to the next user edit. the transformation will not immediately affect the current `state`.
`textObfuscationMode: TextObfuscationMode = TextObfuscationMode.RevealLastTyped`	the method used to obscure the input text.
`textObfuscationCharacter: Char = DefaultObfuscationCharacter`	the character to use while obfuscating the text. It doesn't have an effect when `textObfuscationMode` is set to `TextObfuscationMode.Visible`.
`keyboardOptions: KeyboardOptions = SecureTextFieldKeyboardOptions`	software keyboard options that contains configuration such as `KeyboardType` and `ImeAction`.
`onKeyboardAction: KeyboardActionHandler? = null`	Called when the user presses the action button in the input method editor (IME), or by pressing the enter key on a hardware keyboard. By default this parameter is null, and would execute the default behavior for a received IME Action e.g., `ImeAction.Done` would close the keyboard, `ImeAction.Next` would switch the focus to the next focusable item on the screen.
`shape: Shape = TextFieldDefaults.TextFieldShape`	the shape of the text field's container
`colors: TextFieldColors = TextFieldDefaults.textFieldColors()`	`TextFieldColors` that will be used to resolve color of the text, content (including label, placeholder, leading and trailing icons, indicator line) and background for this text field in different states. See `TextFieldDefaults.textFieldColors`
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this text field. You can use this to change the text field's appearance or preview the text field in different states. Note that if `null` is provided, interactions will still happen internally.

Slider

Cmn

Added in 1.0.0

@Composable
fun Slider(
    value: Float,
    onValueChange: (Float) -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    valueRange: ClosedFloatingPointRange<Float> = 0f..1f,
    steps: @IntRange(from = 0) Int = 0,
    onValueChangeFinished: (() -> Unit)? = null,
    interactionSource: MutableInteractionSource? = null,
    colors: SliderColors = SliderDefaults.colors()
): Unit

Material Design slider

Sliders allow users to make selections from a range of values.

Sliders reflect a range of values along a bar, from which users may select a single value. They are ideal for adjusting settings such as volume, brightness, or applying image filters.

Sliders
image

Use continuous sliders to allow users to make meaningful selections that don’t require a specific value:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.material.Slider
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

var sliderPosition by remember { mutableStateOf(0f) }
Column(modifier = Modifier.padding(horizontal = 16.dp)) {
    Text(text = "%.2f".format(sliderPosition))
    Slider(value = sliderPosition, onValueChange = { sliderPosition = it })
}

You can allow the user to choose only between predefined set of values by specifying the amount of steps between min and max values:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Slider
import androidx.compose.material.SliderDefaults
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

var sliderPosition by remember { mutableStateOf(0f) }
Column(modifier = Modifier.padding(horizontal = 16.dp)) {
    Text(text = sliderPosition.roundToInt().toString())
    Slider(
        value = sliderPosition,
        onValueChange = { sliderPosition = it },
        valueRange = 0f..100f,
        onValueChangeFinished = {
            // launch some business logic update with the state you hold
            // viewModel.updateSelectedSliderValue(sliderPosition)
        },
        // Only allow multiples of 10. Excluding the endpoints of `valueRange`,
        // there are 9 steps (10, 20, ..., 90).
        steps = 9,
        colors =
            SliderDefaults.colors(
                thumbColor = MaterialTheme.colors.secondary,
                activeTrackColor = MaterialTheme.colors.secondary,
            ),
    )
}

Parameters
`value: Float`	current value of the Slider. If outside of `valueRange` provided, value will be coerced to this range.
`onValueChange: (Float) -> Unit`	lambda in which value should be updated
`modifier: Modifier = Modifier`	modifiers for the Slider layout
`enabled: Boolean = true`	whether or not component is enabled and can be interacted with or not
`valueRange: ClosedFloatingPointRange<Float> = 0f..1f`	range of values that Slider value can take. Passed `value` will be coerced to this range
`steps: @IntRange(from = 0) Int = 0`	if positive, specifies the amount of discrete allowable values between the endpoints of `valueRange`. For example, a range from 0 to 10 with 4 `steps` allows 4 values evenly distributed between 0 and 10 (i.e., 2, 4, 6, 8). If `steps` is 0, the slider will behave continuously and allow any value from the range. Must not be negative.
`onValueChangeFinished: (() -> Unit)? = null`	lambda to be invoked when value change has ended. This callback shouldn't be used to update the slider value (use `onValueChange` for that), but rather to know when the user has completed selecting a new value by ending a drag or a click.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this slider. You can use this to change the slider's appearance or preview the slider in different states. Note that if `null` is provided, interactions will still happen internally.
`colors: SliderColors = SliderDefaults.colors()`	`SliderColors` that will be used to determine the color of the Slider parts in different state. See `SliderDefaults.colors` to customize.

Snackbar

Cmn

Added in 1.10.0

@Composable
fun Snackbar(
    modifier: Modifier = Modifier,
    action: (@Composable () -> Unit)? = null,
    actionOnNewLine: Boolean = false,
    shape: Shape = MaterialTheme.shapes.small,
    backgroundColor: Color = SnackbarDefaults.backgroundColor,
    contentColor: Color = MaterialTheme.colors.surface,
    elevation: Dp = 6.dp,
    content: @Composable () -> Unit
): Unit

Material Design snackbar

Snackbars provide brief messages about app processes at the bottom of the screen.

Snackbars inform users of a process that an app has performed or will perform. They appear temporarily, towards the bottom of the screen. They shouldn’t interrupt the user experience, and they don’t require user input to disappear.

A Snackbar can contain a single action. Because Snackbar disappears automatically, the action shouldn't be "Dismiss" or "Cancel".

Snackbars
image

This components provides only the visuals of the Snackbar. If you need to show a Snackbar with defaults on the screen, use ScaffoldState.snackbarHostState and SnackbarHostState.showSnackbar:

import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Snackbar
import androidx.compose.material.Text
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    floatingActionButton = {
        var clickCount by remember { mutableStateOf(0) }
        ExtendedFloatingActionButton(
            text = { Text("Show snackbar") },
            onClick = {
                // show snackbar as a suspend function
                scope.launch {
                    scaffoldState.snackbarHostState.showSnackbar("Snackbar # ${++clickCount}")
                }
            },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        Text(
            text = "Body content",
            modifier = Modifier.padding(innerPadding).fillMaxSize().wrapContentSize(),
        )
    },
)

If you want to customize appearance of the Snackbar, you can pass your own version as a child of the SnackbarHost to the Scaffold:

import androidx.compose.foundation.border
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Snackbar
import androidx.compose.material.SnackbarHost
import androidx.compose.material.Text
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    snackbarHost = {
        // reuse default SnackbarHost to have default animation and timing handling
        SnackbarHost(it) { data ->
            // custom snackbar with the custom border
            Snackbar(
                modifier = Modifier.border(2.dp, MaterialTheme.colors.secondary),
                snackbarData = data,
            )
        }
    },
    floatingActionButton = {
        var clickCount by remember { mutableStateOf(0) }
        ExtendedFloatingActionButton(
            text = { Text("Show snackbar") },
            onClick = {
                scope.launch {
                    scaffoldState.snackbarHostState.showSnackbar("Snackbar # ${++clickCount}")
                }
            },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        Text(
            text = "Custom Snackbar Demo",
            modifier = Modifier.padding(innerPadding).fillMaxSize().wrapContentSize(),
        )
    },
)

Parameters
`modifier: Modifier = Modifier`	modifiers for the Snackbar layout
`action: (@Composable () -> Unit)? = null`	action / button component to add as an action to the snackbar. Consider using `SnackbarDefaults.primaryActionColor` as the color for the action, if you do not have a predefined color you wish to use instead.
`actionOnNewLine: Boolean = false`	whether or not action should be put on the separate line. Recommended for action with long action text
`shape: Shape = MaterialTheme.shapes.small`	Defines the Snackbar's shape as well as its shadow
`backgroundColor: Color = SnackbarDefaults.backgroundColor`	background color of the Snackbar
`contentColor: Color = MaterialTheme.colors.surface`	color of the content to use inside the snackbar. Defaults to either the matching content color for `backgroundColor`, or, if it is not a color from the theme, this will keep the same value set above this Surface.
`elevation: Dp = 6.dp`	The z-coordinate at which to place the SnackBar. This controls the size of the shadow below the SnackBar
`content: @Composable () -> Unit`	content to show information about a process that an app has performed or will perform

Snackbar

Cmn

Added in 1.10.0

@Composable
fun Snackbar(
    snackbarData: SnackbarData,
    modifier: Modifier = Modifier,
    actionOnNewLine: Boolean = false,
    shape: Shape = MaterialTheme.shapes.small,
    backgroundColor: Color = SnackbarDefaults.backgroundColor,
    contentColor: Color = MaterialTheme.colors.surface,
    actionColor: Color = SnackbarDefaults.primaryActionColor,
    elevation: Dp = 6.dp
): Unit

Material Design snackbar

Snackbars provide brief messages about app processes at the bottom of the screen.

A Snackbar can contain a single action. Because they disappear automatically, the action shouldn't be "Dismiss" or "Cancel".

Snackbars
image

This version of snackbar is designed to work with SnackbarData provided by the SnackbarHost, which is usually used inside of the Scaffold.

This components provides only the visuals of the Snackbar. If you need to show a Snackbar with defaults on the screen, use ScaffoldState.snackbarHostState and SnackbarHostState.showSnackbar:

import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Snackbar
import androidx.compose.material.Text
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    floatingActionButton = {
        var clickCount by remember { mutableStateOf(0) }
        ExtendedFloatingActionButton(
            text = { Text("Show snackbar") },
            onClick = {
                // show snackbar as a suspend function
                scope.launch {
                    scaffoldState.snackbarHostState.showSnackbar("Snackbar # ${++clickCount}")
                }
            },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        Text(
            text = "Body content",
            modifier = Modifier.padding(innerPadding).fillMaxSize().wrapContentSize(),
        )
    },
)

If you want to customize appearance of the Snackbar, you can pass your own version as a child of the SnackbarHost to the Scaffold:

import androidx.compose.foundation.border
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Snackbar
import androidx.compose.material.SnackbarHost
import androidx.compose.material.Text
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    snackbarHost = {
        // reuse default SnackbarHost to have default animation and timing handling
        SnackbarHost(it) { data ->
            // custom snackbar with the custom border
            Snackbar(
                modifier = Modifier.border(2.dp, MaterialTheme.colors.secondary),
                snackbarData = data,
            )
        }
    },
    floatingActionButton = {
        var clickCount by remember { mutableStateOf(0) }
        ExtendedFloatingActionButton(
            text = { Text("Show snackbar") },
            onClick = {
                scope.launch {
                    scaffoldState.snackbarHostState.showSnackbar("Snackbar # ${++clickCount}")
                }
            },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        Text(
            text = "Custom Snackbar Demo",
            modifier = Modifier.padding(innerPadding).fillMaxSize().wrapContentSize(),
        )
    },
)

Parameters
`snackbarData: SnackbarData`	data about the current snackbar showing via `SnackbarHostState`
`modifier: Modifier = Modifier`	modifiers for the Snackbar layout
`actionOnNewLine: Boolean = false`	whether or not action should be put on the separate line. Recommended for action with long action text
`shape: Shape = MaterialTheme.shapes.small`	Defines the Snackbar's shape as well as its shadow
`backgroundColor: Color = SnackbarDefaults.backgroundColor`	background color of the Snackbar
`contentColor: Color = MaterialTheme.colors.surface`	color of the content to use inside the snackbar. Defaults to either the matching content color for `backgroundColor`, or, if it is not a color from the theme, this will keep the same value set above this Surface.
`actionColor: Color = SnackbarDefaults.primaryActionColor`	color of the action
`elevation: Dp = 6.dp`	The z-coordinate at which to place the SnackBar. This controls the size of the shadow below the SnackBar

SnackbarHost

Cmn

Added in 1.0.0

@Composable
fun SnackbarHost(
    hostState: SnackbarHostState,
    modifier: Modifier = Modifier,
    snackbar: @Composable (SnackbarData) -> Unit = { Snackbar(it) }
): Unit

Host for Snackbars to be used in Scaffold to properly show, hide and dismiss items based on material specification and the hostState.

This component with default parameters comes build-in with Scaffold, if you need to show a default Snackbar, use use ScaffoldState.snackbarHostState and SnackbarHostState.showSnackbar.

import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Snackbar
import androidx.compose.material.Text
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    floatingActionButton = {
        var clickCount by remember { mutableStateOf(0) }
        ExtendedFloatingActionButton(
            text = { Text("Show snackbar") },
            onClick = {
                // show snackbar as a suspend function
                scope.launch {
                    scaffoldState.snackbarHostState.showSnackbar("Snackbar # ${++clickCount}")
                }
            },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        Text(
            text = "Body content",
            modifier = Modifier.padding(innerPadding).fillMaxSize().wrapContentSize(),
        )
    },
)

If you want to customize appearance of the Snackbar, you can pass your own version as a child of the SnackbarHost to the Scaffold:

import androidx.compose.foundation.border
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.ExtendedFloatingActionButton
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Scaffold
import androidx.compose.material.ScaffoldDefaults
import androidx.compose.material.Snackbar
import androidx.compose.material.SnackbarHost
import androidx.compose.material.Text
import androidx.compose.material.rememberScaffoldState
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.rememberCoroutineScope
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

val scaffoldState = rememberScaffoldState()
val scope = rememberCoroutineScope()
Scaffold(
    scaffoldState = scaffoldState,
    snackbarHost = {
        // reuse default SnackbarHost to have default animation and timing handling
        SnackbarHost(it) { data ->
            // custom snackbar with the custom border
            Snackbar(
                modifier = Modifier.border(2.dp, MaterialTheme.colors.secondary),
                snackbarData = data,
            )
        }
    },
    floatingActionButton = {
        var clickCount by remember { mutableStateOf(0) }
        ExtendedFloatingActionButton(
            text = { Text("Show snackbar") },
            onClick = {
                scope.launch {
                    scaffoldState.snackbarHostState.showSnackbar("Snackbar # ${++clickCount}")
                }
            },
        )
    },
    contentWindowInsets = ScaffoldDefaults.contentWindowInsets,
    content = { innerPadding ->
        Text(
            text = "Custom Snackbar Demo",
            modifier = Modifier.padding(innerPadding).fillMaxSize().wrapContentSize(),
        )
    },
)

Parameters
`hostState: SnackbarHostState`	state of this component to read and show `Snackbar`s accordingly
`modifier: Modifier = Modifier`	optional modifier for this component
`snackbar: @Composable (SnackbarData) -> Unit = { Snackbar(it) }`	the instance of the `Snackbar` to be shown at the appropriate time with appearance based on the `SnackbarData` provided as a param

Surface

Cmn

Added in 1.10.0

@Composable
fun Surface(
    modifier: Modifier = Modifier,
    shape: Shape = RectangleShape,
    color: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(color),
    border: BorderStroke? = null,
    elevation: Dp = 0.dp,
    content: @Composable () -> Unit
): Unit

Material Design surface

Material surface is the central metaphor in material design. Each surface exists at a given elevation, which influences how that piece of surface visually relates to other surfaces and how that surface casts shadows.

See the other overloads for clickable, selectable, and toggleable surfaces.

The Surface is responsible for:

Clipping: Surface clips its children to the shape specified by shape
Elevation: Surface draws a shadow to represent depth, where elevation represents the depth of this surface. If the passed shape is concave the shadow will not be drawn on Android versions less than 10.
Borders: If shape has a border, then it will also be drawn.
Background: Surface fills the shape specified by shape with the color. If color is Colors.surface, the ElevationOverlay from LocalElevationOverlay will be used to apply an overlay - by default this will only occur in dark theme. The color of the overlay depends on the elevation of this Surface, and the LocalAbsoluteElevation set by any parent surfaces. This ensures that a Surface never appears to have a lower elevation overlay than its ancestors, by summing the elevation of all previous Surfaces.
Content color: Surface uses contentColor to specify a preferred color for the content of this surface - this is used by the Text and Icon components as a default color.
Blocking touch propagation behind the surface.

If no contentColor is set, this surface will try and match its background color to a color defined in the theme Colors, and return the corresponding content color. For example, if the color of this surface is Colors.surface, contentColor will be set to Colors.onSurface. If color is not part of the theme palette, contentColor will keep the same value set above this Surface.

import androidx.compose.material.MaterialTheme
import androidx.compose.material.Surface
import androidx.compose.material.Text

Surface(color = MaterialTheme.colors.background) { Text("Text color is `onBackground`") }

To modify these default style values used by text, use ProvideTextStyle or explicitly pass a new TextStyle to your text.

To manually retrieve the content color inside a surface, use LocalContentColor.

Parameters
`modifier: Modifier = Modifier`	Modifier to be applied to the layout corresponding to the surface
`shape: Shape = RectangleShape`	Defines the surface's shape as well its shadow. A shadow is only displayed if the `elevation` is greater than zero.
`color: Color = MaterialTheme.colors.surface`	The background color. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(color)`	The preferred content color provided by this Surface to its children. Defaults to either the matching content color for `color`, or if `color` is not a color from the theme, this will keep the same value set above this Surface.
`border: BorderStroke? = null`	Optional border to draw on top of the surface
`elevation: Dp = 0.dp`	The size of the shadow below the surface. Note that It will not affect z index of the Surface. If you want to change the drawing order you can use `Modifier.zIndex`.
`content: @Composable () -> Unit`	The content to be displayed on this Surface

Surface

Cmn

Added in 1.10.0

@ExperimentalMaterialApi
@Composable
fun Surface(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    shape: Shape = RectangleShape,
    color: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(color),
    border: BorderStroke? = null,
    elevation: Dp = 0.dp,
    interactionSource: MutableInteractionSource? = null,
    content: @Composable () -> Unit
): Unit

This version of Surface is responsible for a click handling as well al everything else that a regular Surface does:

This clickable Surface is responsible for:

Clipping: Surface clips its children to the shape specified by shape
Elevation: Surface draws a shadow to represent depth, where elevation represents the depth of this surface. If the passed shape is convex the shadow will not be drawn on Android versions less than 10.
Borders: If shape has a border, then it will also be drawn.
Background: Surface fills the shape specified by shape with the color. If color is Colors.surface, the ElevationOverlay from LocalElevationOverlay will be used to apply an overlay - by default this will only occur in dark theme. The color of the overlay depends on the elevation of this Surface, and the LocalAbsoluteElevation set by any parent surfaces. This ensures that a Surface never appears to have a lower elevation overlay than its ancestors, by summing the elevation of all previous Surfaces.
Content color: Surface uses contentColor to specify a preferred color for the content of this surface - this is used by the Text and Icon components as a default color. If no contentColor is set, this surface will try and match its background color to a color defined in the theme Colors, and return the corresponding content color. For example, if the color of this surface is Colors.surface, contentColor will be set to Colors.onSurface. If color is not part of the theme palette, contentColor will keep the same value set above this Surface.
Click handling. This version of surface will react to the clicks, calling onClick lambda, updating the interactionSource when PressInteraction occurs, and showing ripple indication in response to press events. If you don't need click handling, consider using the Surface function that doesn't require onClick param.
Semantics for clicks. Just like with Modifier.clickable, clickable version of Surface will produce semantics to indicate that it is clicked. No semantic role is set by default, you may specify one by passing a desired Role with a Modifier.semantics.

import androidx.compose.material.MaterialTheme
import androidx.compose.material.Surface
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember

var count by remember { mutableStateOf(0) }
Surface(onClick = { count++ }, color = MaterialTheme.colors.background) {
    Text("Clickable surface Text with `onBackground` color and count: $count")
}

To modify these default style values used by text, use ProvideTextStyle or explicitly pass a new TextStyle to your text.

To manually retrieve the content color inside a surface, use LocalContentColor.

Parameters
`onClick: () -> Unit`	callback to be called when the surface is clicked
`modifier: Modifier = Modifier`	Modifier to be applied to the layout corresponding to the surface
`enabled: Boolean = true`	Controls the enabled state of the surface. When `false`, this surface will not be clickable
`shape: Shape = RectangleShape`	Defines the surface's shape as well its shadow. A shadow is only displayed if the `elevation` is greater than zero.
`color: Color = MaterialTheme.colors.surface`	The background color. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(color)`	The preferred content color provided by this Surface to its children. Defaults to either the matching content color for `color`, or if `color` is not a color from the theme, this will keep the same value set above this Surface.
`border: BorderStroke? = null`	Optional border to draw on top of the surface
`elevation: Dp = 0.dp`	The size of the shadow below the surface. Note that It will not affect z index of the Surface. If you want to change the drawing order you can use `Modifier.zIndex`.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this surface. You can use this to change the surface's appearance or preview the surface in different states. Note that if `null` is provided, interactions will still happen internally.
`content: @Composable () -> Unit`	The content to be displayed on this Surface

Surface

Cmn

@ExperimentalMaterialApi
@Composable
fun Surface(
    checked: Boolean,
    onCheckedChange: (Boolean) -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    shape: Shape = RectangleShape,
    color: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(color),
    border: BorderStroke? = null,
    elevation: Dp = 0.dp,
    interactionSource: MutableInteractionSource? = null,
    content: @Composable () -> Unit
): Unit

This version of Surface is responsible for a toggling its checked state as well as everything else that a regular Surface does:

This toggleable Surface is responsible for:

Clipping: Surface clips its children to the shape specified by shape
Elevation: Surface draws a shadow to represent depth, where elevation represents the depth of this surface. If the passed shape is convex the shadow will not be drawn on Android versions less than 10.
Borders: If shape has a border, then it will also be drawn.
Background: Surface fills the shape specified by shape with the color. If color is Colors.surface, the ElevationOverlay from LocalElevationOverlay will be used to apply an overlay - by default this will only occur in dark theme. The color of the overlay depends on the elevation of this Surface, and the LocalAbsoluteElevation set by any parent surfaces. This ensures that a Surface never appears to have a lower elevation overlay than its ancestors, by summing the elevation of all previous Surfaces.
Content color: Surface uses contentColor to specify a preferred color for the content of this surface - this is used by the Text and Icon components as a default color. If no contentColor is set, this surface will try and match its background color to a color defined in the theme Colors, and return the corresponding content color. For example, if the color of this surface is Colors.surface, contentColor will be set to Colors.onSurface. If color is not part of the theme palette, contentColor will keep the same value set above this Surface.
Click handling. This version of surface will react to the check toggles, calling onCheckedChange lambda, updating the interactionSource when PressInteraction occurs, and showing ripple indication in response to press events. If you don't need check handling, consider using a Surface function that doesn't require onCheckedChange param.
Semantics for toggle. Just like with Modifier.toggleable, toggleable version of Surface will produce semantics to indicate that it is checked. No semantic role is set by default, you may specify one by passing a desired Role with a Modifier.semantics.

import androidx.compose.material.MaterialTheme
import androidx.compose.material.Surface
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.text.style.TextAlign

var checked by remember { mutableStateOf(false) }
Surface(
    checked = checked,
    onCheckedChange = { checked = !checked },
    color =
        if (checked) {
            MaterialTheme.colors.primary
        } else {
            MaterialTheme.colors.background
        },
) {
    Text(text = if (checked) "ON" else "OFF", textAlign = TextAlign.Center)
}

To modify these default style values used by text, use ProvideTextStyle or explicitly pass a new TextStyle to your text.

To manually retrieve the content color inside a surface, use LocalContentColor.

Parameters
`checked: Boolean`	whether or not this Surface is toggled on or off
`onCheckedChange: (Boolean) -> Unit`	callback to be invoked when the toggleable Surface is clicked
`modifier: Modifier = Modifier`	Modifier to be applied to the layout corresponding to the surface
`enabled: Boolean = true`	Controls the enabled state of the surface. When `false`, this surface will not be selectable
`shape: Shape = RectangleShape`	Defines the surface's shape as well its shadow. A shadow is only displayed if the `elevation` is greater than zero.
`color: Color = MaterialTheme.colors.surface`	The background color. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(color)`	The preferred content color provided by this Surface to its children. Defaults to either the matching content color for `color`, or if `color` is not a color from the theme, this will keep the same value set above this Surface.
`border: BorderStroke? = null`	Optional border to draw on top of the surface
`elevation: Dp = 0.dp`	The size of the shadow below the surface. Note that It will not affect z index of the Surface. If you want to change the drawing order you can use `Modifier.zIndex`.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this surface. You can use this to change the surface's appearance or preview the surface in different states. Note that if `null` is provided, interactions will still happen internally.
`content: @Composable () -> Unit`	The content to be displayed on this Surface

Surface

Cmn

Added in 1.10.0

@ExperimentalMaterialApi
@Composable
fun Surface(
    selected: Boolean,
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    shape: Shape = RectangleShape,
    color: Color = MaterialTheme.colors.surface,
    contentColor: Color = contentColorFor(color),
    border: BorderStroke? = null,
    elevation: Dp = 0.dp,
    interactionSource: MutableInteractionSource? = null,
    content: @Composable () -> Unit
): Unit

This version of Surface is responsible for a selection handling as well as everything else that a regular Surface does:

This selectable Surface is responsible for:

Clipping: Surface clips its children to the shape specified by shape
Elevation: Surface draws a shadow to represent depth, where elevation represents the depth of this surface. If the passed shape is convex the shadow will not be drawn on Android versions less than 10.
Borders: If shape has a border, then it will also be drawn.
Background: Surface fills the shape specified by shape with the color. If color is Colors.surface, the ElevationOverlay from LocalElevationOverlay will be used to apply an overlay - by default this will only occur in dark theme. The color of the overlay depends on the elevation of this Surface, and the LocalAbsoluteElevation set by any parent surfaces. This ensures that a Surface never appears to have a lower elevation overlay than its ancestors, by summing the elevation of all previous Surfaces.
Content color: Surface uses contentColor to specify a preferred color for the content of this surface - this is used by the Text and Icon components as a default color. If no contentColor is set, this surface will try and match its background color to a color defined in the theme Colors, and return the corresponding content color. For example, if the color of this surface is Colors.surface, contentColor will be set to Colors.onSurface. If color is not part of the theme palette, contentColor will keep the same value set above this Surface.
Click handling. This version of surface will react to the clicks, calling onClick lambda, updating the interactionSource when PressInteraction occurs, and showing ripple indication in response to press events. If you don't need click handling, consider using the Surface function that doesn't require onClick param.
Semantics for selection. Just like with Modifier.selectable, selectable version of Surface will produce semantics to indicate that it is selected. No semantic role is set by default, you may specify one by passing a desired Role with a Modifier.semantics.

import androidx.compose.material.MaterialTheme
import androidx.compose.material.Surface
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.text.style.TextAlign

var selected by remember { mutableStateOf(false) }
Surface(
    selected = selected,
    onClick = { selected = !selected },
    color = MaterialTheme.colors.background,
) {
    Text(text = if (selected) "Selected" else "Not Selected", textAlign = TextAlign.Center)
}

To modify these default style values used by text, use ProvideTextStyle or explicitly pass a new TextStyle to your text.

To manually retrieve the content color inside a surface, use LocalContentColor.

Parameters
`selected: Boolean`	whether this Surface is selected
`onClick: () -> Unit`	callback to be called when the surface is clicked
`modifier: Modifier = Modifier`	Modifier to be applied to the layout corresponding to the surface
`enabled: Boolean = true`	Controls the enabled state of the surface. When `false`, this surface will not be selectable
`shape: Shape = RectangleShape`	Defines the surface's shape as well its shadow. A shadow is only displayed if the `elevation` is greater than zero.
`color: Color = MaterialTheme.colors.surface`	The background color. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(color)`	The preferred content color provided by this Surface to its children. Defaults to either the matching content color for `color`, or if `color` is not a color from the theme, this will keep the same value set above this Surface.
`border: BorderStroke? = null`	Optional border to draw on top of the surface
`elevation: Dp = 0.dp`	The size of the shadow below the surface. Note that It will not affect z index of the Surface. If you want to change the drawing order you can use `Modifier.zIndex`.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this surface. You can use this to change the surface's appearance or preview the surface in different states. Note that if `null` is provided, interactions will still happen internally.
`content: @Composable () -> Unit`	The content to be displayed on this Surface

SwipeToDismiss

Cmn

@Composable
@ExperimentalMaterialApi
fun SwipeToDismiss(
    state: DismissState,
    modifier: Modifier = Modifier,
    directions: Set<DismissDirection> = setOf(EndToStart, StartToEnd),
    dismissThresholds: (DismissDirection) -> ThresholdConfig = {
        FixedThreshold(DISMISS_THRESHOLD)
    },
    background: @Composable RowScope.() -> Unit,
    dismissContent: @Composable RowScope.() -> Unit
): Unit

A composable that can be dismissed by swiping left or right.

import androidx.compose.animation.animateColorAsState
import androidx.compose.animation.core.animateDpAsState
import androidx.compose.animation.core.animateFloatAsState
import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.lazy.LazyColumn
import androidx.compose.foundation.lazy.items
import androidx.compose.material.Card
import androidx.compose.material.DismissDirection.EndToStart
import androidx.compose.material.DismissDirection.StartToEnd
import androidx.compose.material.DismissValue.Default
import androidx.compose.material.DismissValue.DismissedToEnd
import androidx.compose.material.DismissValue.DismissedToStart
import androidx.compose.material.Icon
import androidx.compose.material.ListItem
import androidx.compose.material.SwipeToDismiss
import androidx.compose.material.Text
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Delete
import androidx.compose.material.icons.filled.Done
import androidx.compose.material.rememberDismissState
import androidx.compose.runtime.getValue
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.draw.scale
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.text.font.FontWeight
import androidx.compose.ui.unit.dp

// This is an example of a list of dismissible items, similar to what you would see in an
// email app. Swiping left reveals a 'delete' icon and swiping right reveals a 'done' icon.
// The background will start as grey, but once the dismiss threshold is reached, the colour
// will animate to red if you're swiping left or green if you're swiping right. When you let
// go, the item will animate out of the way if you're swiping left (like deleting an email) or
// back to its default position if you're swiping right (like marking an email as read/unread).
LazyColumn {
    items(items) { item ->
        var unread by remember { mutableStateOf(false) }
        val dismissState =
            rememberDismissState(
                confirmStateChange = {
                    if (it == DismissedToEnd) unread = !unread
                    it != DismissedToEnd
                }
            )
        SwipeToDismiss(
            state = dismissState,
            modifier = Modifier.padding(vertical = 4.dp),
            directions = setOf(StartToEnd, EndToStart),
            background = {
                val direction = dismissState.dismissDirection ?: return@SwipeToDismiss
                val color by
                    animateColorAsState(
                        when (dismissState.targetValue) {
                            Default -> Color.LightGray
                            DismissedToEnd -> Color.Green
                            DismissedToStart -> Color.Red
                        }
                    )
                val alignment =
                    when (direction) {
                        StartToEnd -> Alignment.CenterStart
                        EndToStart -> Alignment.CenterEnd
                    }
                val icon =
                    when (direction) {
                        StartToEnd -> Icons.Default.Done
                        EndToStart -> Icons.Default.Delete
                    }
                val scale by
                    animateFloatAsState(if (dismissState.targetValue == Default) 0.75f else 1f)

                Box(
                    Modifier.fillMaxSize().background(color).padding(horizontal = 20.dp),
                    contentAlignment = alignment,
                ) {
                    Icon(
                        icon,
                        contentDescription = "Localized description",
                        modifier = Modifier.scale(scale),
                    )
                }
            },
            dismissContent = {
                Card(
                    elevation =
                        animateDpAsState(
                                if (dismissState.dismissDirection != null) 4.dp else 0.dp
                            )
                            .value
                ) {
                    ListItem(
                        text = {
                            Text(item, fontWeight = if (unread) FontWeight.Bold else null)
                        },
                        secondaryText = { Text("Swipe me left or right!") },
                    )
                }
            },
        )
    }
}

Parameters
`state: DismissState`	The state of this component.
`modifier: Modifier = Modifier`	Optional `Modifier` for this component.
`directions: Set<DismissDirection> = setOf(EndToStart, StartToEnd)`	The set of directions in which the component can be dismissed.
`dismissThresholds: (DismissDirection) -> ThresholdConfig = { FixedThreshold(DISMISS_THRESHOLD) }`	The thresholds the item needs to be swiped in order to be dismissed.
`background: @Composable RowScope.() -> Unit`	A composable that is stacked behind the content and is exposed when the content is swiped. You can/should use the `state` to have different backgrounds on each side.
`dismissContent: @Composable RowScope.() -> Unit`	The content that can be dismissed.

Switch

Cmn

Added in 1.0.0

@Composable
fun Switch(
    checked: Boolean,
    onCheckedChange: ((Boolean) -> Unit)?,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    colors: SwitchColors = SwitchDefaults.colors()
): Unit

Material Design switch

Switches toggle the state of a single item on or off.

Switches
image

import androidx.compose.foundation.layout.Row
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.selection.toggleable
import androidx.compose.material.Switch
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.Role
import androidx.compose.ui.semantics.role
import androidx.compose.ui.unit.dp

val checkedState = remember { mutableStateOf(true) }
Switch(checked = checkedState.value, onCheckedChange = { checkedState.value = it })

var pineappleOnPizza by remember { mutableStateOf(true) }

Row(
    Modifier.padding(16.dp)
        .toggleable(
            role = Role.Switch,
            value = pineappleOnPizza,
            onValueChange = { pineappleOnPizza = it },
        )
) {
    Switch(checked = pineappleOnPizza, onCheckedChange = null)
    Spacer(Modifier.width(8.dp))
    Text("Pineapple on pizza?")
}

Parameters
`checked: Boolean`	whether or not this component is checked
`onCheckedChange: ((Boolean) -> Unit)?`	callback to be invoked when Switch is being clicked, therefore the change of checked state is requested. If null, then this is passive and relies entirely on a higher-level component to control the "checked" state.
`modifier: Modifier = Modifier`	Modifier to be applied to the switch layout
`enabled: Boolean = true`	whether the component is enabled or grayed out
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this switch. You can use this to change the switch's appearance or preview the switch in different states. Note that if `null` is provided, interactions will still happen internally.
`colors: SwitchColors = SwitchDefaults.colors()`	`SwitchColors` that will be used to determine the color of the thumb and track in different states. See `SwitchDefaults.colors`.

Tab

Cmn

@Composable
fun Tab(
    selected: Boolean,
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    selectedContentColor: Color = LocalContentColor.current,
    unselectedContentColor: Color = selectedContentColor.copy(alpha = ContentAlpha.medium),
    content: @Composable ColumnScope.() -> Unit
): Unit

Material Design tab

Tabs organize content across different screens, data sets, and other interactions.

Tab image

Generic Tab overload that is not opinionated about content / color. See the other overload for a Tab that has specific slots for text and / or an icon, as well as providing the correct colors for selected / unselected states.

A custom tab using this API may look like:

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Tab
import androidx.compose.material.Text
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp

Tab(selected, onClick) {
    Column(
        Modifier.padding(10.dp).height(50.dp).fillMaxWidth(),
        verticalArrangement = Arrangement.SpaceBetween,
    ) {
        Box(
            Modifier.size(10.dp)
                .align(Alignment.CenterHorizontally)
                .background(color = if (selected) Color.Red else Color.White)
        )
        Text(
            text = title,
            style = MaterialTheme.typography.body1,
            modifier = Modifier.align(Alignment.CenterHorizontally),
        )
    }
}

Parameters
`selected: Boolean`	whether this tab is selected or not
`onClick: () -> Unit`	the callback to be invoked when this tab is selected
`modifier: Modifier = Modifier`	optional `Modifier` for this tab
`enabled: Boolean = true`	controls the enabled state of this tab. When `false`, this tab will not be clickable and will appear disabled to accessibility services.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this tab. You can use this to change the tab's appearance or preview the tab in different states. Note that if `null` is provided, interactions will still happen internally.
`selectedContentColor: Color = LocalContentColor.current`	the color for the content of this tab when selected, and the color of the ripple.
`unselectedContentColor: Color = selectedContentColor.copy(alpha = ContentAlpha.medium)`	the color for the content of this tab when not selected
`content: @Composable ColumnScope.() -> Unit`	the content of this tab

Tab

Cmn

Added in 1.10.0

@Composable
fun Tab(
    selected: Boolean,
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    text: (@Composable () -> Unit)? = null,
    icon: (@Composable () -> Unit)? = null,
    interactionSource: MutableInteractionSource? = null,
    selectedContentColor: Color = LocalContentColor.current,
    unselectedContentColor: Color = selectedContentColor.copy(alpha = ContentAlpha.medium)
): Unit

Material Design tab

Tabs organize content across different screens, data sets, and other interactions.

Tab image

A Tab represents a single page of content using a text label and/or icon. It represents its selected state by tinting the text label and/or image with selectedContentColor.

This should typically be used inside of a TabRow, see the corresponding documentation for example usage.

This Tab has slots for text and/or icon - see the other Tab overload for a generic Tab that is not opinionated about its content.

Parameters
`selected: Boolean`	whether this tab is selected or not
`onClick: () -> Unit`	the callback to be invoked when this tab is selected
`modifier: Modifier = Modifier`	optional `Modifier` for this tab
`enabled: Boolean = true`	controls the enabled state of this tab. When `false`, this tab will not be clickable and will appear disabled to accessibility services.
`text: (@Composable () -> Unit)? = null`	the text label displayed in this tab
`icon: (@Composable () -> Unit)? = null`	the icon displayed in this tab
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this tab. You can use this to change the tab's appearance or preview the tab in different states. Note that if `null` is provided, interactions will still happen internally.
`selectedContentColor: Color = LocalContentColor.current`	the color for the content of this tab when selected, and the color of the ripple.
`unselectedContentColor: Color = selectedContentColor.copy(alpha = ContentAlpha.medium)`	the color for the content of this tab when not selected

See also
`LeadingIconTab`

TabRow

Cmn

Material Design fixed tabs

@Composable
@UiComposable
fun TabRow(
    selectedTabIndex: Int,
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    indicator: @Composable @UiComposable (tabPositions: List<TabPosition>) -> Unit = @Composable { tabPositions ->
            TabRowDefaults.Indicator(Modifier.tabIndicatorOffset(tabPositions[selectedTabIndex]))
        },
    divider: @Composable @UiComposable () -> Unit = @Composable { TabRowDefaults.Divider() },
    tabs: @Composable @UiComposable () -> Unit
): Unit

Fixed tabs display all tabs in a set simultaneously. They are best for switching between related content quickly, such as between transportation methods in a map. To navigate between fixed tabs, tap an individual tab, or swipe left or right in the content area.

Fixed tabs
image

A TabRow contains a row of Tabs, and displays an indicator underneath the currently selected tab. A TabRow places its tabs evenly spaced along the entire row, with each tab taking up an equal amount of space. See ScrollableTabRow for a tab row that does not enforce equal size, and allows scrolling to tabs that do not fit on screen.

A simple example with text tabs looks like:

import androidx.compose.foundation.layout.Column
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Tab
import androidx.compose.material.TabRow
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier

var state by remember { mutableStateOf(0) }
val titles = listOf("TAB 1", "TAB 2", "TAB 3 WITH LOTS OF TEXT")
Column {
    TabRow(selectedTabIndex = state) {
        titles.forEachIndexed { index, title ->
            Tab(text = { Text(title) }, selected = state == index, onClick = { state = index })
        }
    }
    Text(
        modifier = Modifier.align(Alignment.CenterHorizontally),
        text = "Text tab ${state + 1} selected",
        style = MaterialTheme.typography.body1,
    )
}

You can also provide your own custom tab, such as:

import androidx.compose.foundation.layout.Column
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Tab
import androidx.compose.material.TabRow
import androidx.compose.material.Text
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier

var state by remember { mutableStateOf(0) }
val titles = listOf("TAB 1", "TAB 2", "TAB 3")
Column {
    TabRow(selectedTabIndex = state) {
        titles.forEachIndexed { index, title ->
            FancyTab(title = title, onClick = { state = index }, selected = (index == state))
        }
    }
    Text(
        modifier = Modifier.align(Alignment.CenterHorizontally),
        text = "Fancy tab ${state + 1} selected",
        style = MaterialTheme.typography.body1,
    )
}

Where the custom tab itself could look like:

import androidx.compose.foundation.background
import androidx.compose.foundation.layout.Arrangement
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.fillMaxWidth
import androidx.compose.foundation.layout.height
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Tab
import androidx.compose.material.Text
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp

Tab(selected, onClick) {
    Column(
        Modifier.padding(10.dp).height(50.dp).fillMaxWidth(),
        verticalArrangement = Arrangement.SpaceBetween,
    ) {
        Box(
            Modifier.size(10.dp)
                .align(Alignment.CenterHorizontally)
                .background(color = if (selected) Color.Red else Color.White)
        )
        Text(
            text = title,
            style = MaterialTheme.typography.body1,
            modifier = Modifier.align(Alignment.CenterHorizontally),
        )
    }
}

As well as customizing the tab, you can also provide a custom indicator, to customize the indicator displayed for a tab. indicator will be placed to fill the entire TabRow, so it should internally take care of sizing and positioning the indicator to match changes to selectedTabIndex.

For example, given an indicator that draws a rounded rectangle near the edges of the Tab:

import androidx.compose.foundation.BorderStroke
import androidx.compose.foundation.border
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.shape.RoundedCornerShape
import androidx.compose.material.Tab
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.dp

// Draws a rounded rectangular with border around the Tab, with a 5.dp padding from the edges
// Color is passed in as a parameter [color]
Box(
    modifier
        .padding(5.dp)
        .fillMaxSize()
        .border(BorderStroke(2.dp, color), RoundedCornerShape(5.dp))
)

We can reuse TabRowDefaults.tabIndicatorOffset and just provide this indicator, as we aren't changing how the size and position of the indicator changes between tabs:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.offset
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Tab
import androidx.compose.material.TabPosition
import androidx.compose.material.TabRow
import androidx.compose.material.TabRowDefaults.tabIndicatorOffset
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color

var state by remember { mutableStateOf(0) }
val titles = listOf("TAB 1", "TAB 2", "TAB 3")

// Reuse the default offset animation modifier, but use our own indicator
val indicator =
    @Composable { tabPositions: List<TabPosition> ->
        FancyIndicator(Color.White, Modifier.tabIndicatorOffset(tabPositions[state]))
    }

Column {
    TabRow(selectedTabIndex = state, indicator = indicator) {
        titles.forEachIndexed { index, title ->
            Tab(text = { Text(title) }, selected = state == index, onClick = { state = index })
        }
    }
    Text(
        modifier = Modifier.align(Alignment.CenterHorizontally),
        text = "Fancy indicator tab ${state + 1} selected",
        style = MaterialTheme.typography.body1,
    )
}

You may also want to use a custom transition, to allow you to dynamically change the appearance of the indicator as it animates between tabs, such as changing its color or size. indicator is stacked on top of the entire TabRow, so you just need to provide a custom transition that animates the offset of the indicator from the start of the TabRow. For example, take the following example that uses a transition to animate the offset, width, and color of the same FancyIndicator from before, also adding a physics based 'spring' effect to the indicator in the direction of motion:

import androidx.compose.animation.animateColor
import androidx.compose.animation.core.animateDp
import androidx.compose.animation.core.spring
import androidx.compose.animation.core.updateTransition
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.foundation.layout.offset
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.width
import androidx.compose.foundation.layout.wrapContentSize
import androidx.compose.material.Tab
import androidx.compose.material.TabRow
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.unit.IntOffset

val colors = listOf(Color.Yellow, Color.Red, Color.Green)
val transition = updateTransition(selectedTabIndex)
val indicatorStart by
    transition.animateDp(
        transitionSpec = {
            // Handle directionality here, if we are moving to the right, we
            // want the right side of the indicator to move faster, if we are
            // moving to the left, we want the left side to move faster.
            if (initialState < targetState) {
                spring(dampingRatio = 1f, stiffness = 50f)
            } else {
                spring(dampingRatio = 1f, stiffness = 1000f)
            }
        }
    ) {
        tabPositions[it].left
    }

val indicatorEnd by
    transition.animateDp(
        transitionSpec = {
            // Handle directionality here, if we are moving to the right, we
            // want the right side of the indicator to move faster, if we are
            // moving to the left, we want the left side to move faster.
            if (initialState < targetState) {
                spring(dampingRatio = 1f, stiffness = 1000f)
            } else {
                spring(dampingRatio = 1f, stiffness = 50f)
            }
        }
    ) {
        tabPositions[it].right
    }

val indicatorColor by transition.animateColor { colors[it % colors.size] }

FancyIndicator(
    // Pass the current color to the indicator
    indicatorColor,
    modifier =
        Modifier
            // Fill up the entire TabRow, and place the indicator at the start
            .fillMaxSize()
            .wrapContentSize(align = Alignment.BottomStart)
            // Apply an offset from the start to correctly position the indicator around the tab
            .offset { IntOffset(indicatorStart.roundToPx(), 0) }
            // Make the width of the indicator follow the animated width as we move between tabs
            .width(indicatorEnd - indicatorStart),
)

We can now just pass this indicator directly to TabRow:

import androidx.compose.foundation.layout.Column
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Tab
import androidx.compose.material.TabPosition
import androidx.compose.material.TabRow
import androidx.compose.material.Text
import androidx.compose.runtime.Composable
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier

var state by remember { mutableStateOf(0) }
val titles = listOf("TAB 1", "TAB 2", "TAB 3")

val indicator =
    @Composable { tabPositions: List<TabPosition> ->
        FancyAnimatedIndicator(tabPositions = tabPositions, selectedTabIndex = state)
    }

Column {
    TabRow(selectedTabIndex = state, indicator = indicator) {
        titles.forEachIndexed { index, title ->
            Tab(text = { Text(title) }, selected = state == index, onClick = { state = index })
        }
    }
    Text(
        modifier = Modifier.align(Alignment.CenterHorizontally),
        text = "Fancy transition tab ${state + 1} selected",
        style = MaterialTheme.typography.body1,
    )
}

Parameters
`selectedTabIndex: Int`	the index of the currently selected tab
`modifier: Modifier = Modifier`	optional `Modifier` for this TabRow
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for the TabRow. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this TabRow to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this TabRow.
`indicator: @Composable @UiComposable (tabPositions: List<TabPosition>) -> Unit = @Composable { tabPositions -> TabRowDefaults.Indicator(Modifier.tabIndicatorOffset(tabPositions[selectedTabIndex])) }`	the indicator that represents which tab is currently selected. By default this will be a `TabRowDefaults.Indicator`, using a `TabRowDefaults.tabIndicatorOffset` modifier to animate its position. Note that this indicator will be forced to fill up the entire TabRow, so you should use `TabRowDefaults.tabIndicatorOffset` or similar to animate the actual drawn indicator inside this space, and provide an offset from the start.
`divider: @Composable @UiComposable () -> Unit = @Composable { TabRowDefaults.Divider() }`	the divider displayed at the bottom of the TabRow. This provides a layer of separation between the TabRow and the content displayed underneath.
`tabs: @Composable @UiComposable () -> Unit`	the tabs inside this TabRow. Typically this will be multiple `Tab`s. Each element inside this lambda will be measured and placed evenly across the TabRow, each taking up equal space.

Text

Cmn

@Composable
fun Text(
    text: String,
    modifier: Modifier = Modifier,
    color: Color = Color.Unspecified,
    fontSize: TextUnit = TextUnit.Unspecified,
    fontStyle: FontStyle? = null,
    fontWeight: FontWeight? = null,
    fontFamily: FontFamily? = null,
    letterSpacing: TextUnit = TextUnit.Unspecified,
    textDecoration: TextDecoration? = null,
    textAlign: TextAlign? = null,
    lineHeight: TextUnit = TextUnit.Unspecified,
    overflow: TextOverflow = TextOverflow.Clip,
    softWrap: Boolean = true,
    maxLines: Int = Int.MAX_VALUE,
    minLines: Int = 1,
    onTextLayout: ((TextLayoutResult) -> Unit)? = null,
    style: TextStyle = LocalTextStyle.current
): Unit

High level element that displays text and provides semantics / accessibility information.

The default style uses the LocalTextStyle provided by the MaterialTheme / components. If you are setting your own style, you may want to consider first retrieving LocalTextStyle, and using TextStyle.copy to keep any theme defined attributes, only modifying the specific attributes you want to override.

For ease of use, commonly used parameters from TextStyle are also present here. The order of precedence is as follows:

If a parameter is explicitly set here (i.e, it is not null or TextUnit.Unspecified), then this parameter will always be used.
If a parameter is not set, (null or TextUnit.Unspecified), then the corresponding value from style will be used instead.

Additionally, for color, if color is not set, and style does not have a color, then LocalContentColor will be used with an alpha of LocalContentAlpha- this allows this Text or element containing this Text to adapt to different background colors and still maintain contrast and accessibility.

Parameters
`text: String`	The text to be displayed.
`modifier: Modifier = Modifier`	`Modifier` to apply to this layout node.
`color: Color = Color.Unspecified`	`Color` to apply to the text. If `Color.Unspecified`, and `style` has no color set, this will be `LocalContentColor`.
`fontSize: TextUnit = TextUnit.Unspecified`	The size of glyphs to use when painting the text. See `TextStyle.fontSize`.
`fontStyle: FontStyle? = null`	The typeface variant to use when drawing the letters (e.g., italic). See `TextStyle.fontStyle`.
`fontWeight: FontWeight? = null`	The typeface thickness to use when painting the text (e.g., `FontWeight.Bold`).
`fontFamily: FontFamily? = null`	The font family to be used when rendering the text. See `TextStyle.fontFamily`.
`letterSpacing: TextUnit = TextUnit.Unspecified`	The amount of space to add between each letter. See `TextStyle.letterSpacing`.
`textDecoration: TextDecoration? = null`	The decorations to paint on the text (e.g., an underline). See `TextStyle.textDecoration`.
`textAlign: TextAlign? = null`	The alignment of the text within the lines of the paragraph. See `TextStyle.textAlign`.
`lineHeight: TextUnit = TextUnit.Unspecified`	Line height for the `Paragraph` in `TextUnit` unit, e.g. SP or EM. See `TextStyle.lineHeight`.
`overflow: TextOverflow = TextOverflow.Clip`	How visual overflow should be handled.
`softWrap: Boolean = true`	Whether the text should break at soft line breaks. If false, the glyphs in the text will be positioned as if there was unlimited horizontal space. If `softWrap` is false, `overflow` and TextAlign may have unexpected effects.
`maxLines: Int = Int.MAX_VALUE`	An optional maximum number of lines for the text to span, wrapping if necessary. If the text exceeds the given number of lines, it will be truncated according to `overflow` and `softWrap`. It is required that 1 <= `minLines`<= `maxLines`.
`minLines: Int = 1`	The minimum height in terms of minimum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`.
`onTextLayout: ((TextLayoutResult) -> Unit)? = null`	Callback that is executed when a new text layout is calculated. A `TextLayoutResult` object that callback provides contains paragraph information, size of the text, baselines and other details. The callback can be used to add additional decoration or functionality to the text. For example, to draw selection around the text.
`style: TextStyle = LocalTextStyle.current`	Style configuration for the text such as color, font, line height etc.

Text

Cmn

@Composable
fun Text(
    text: AnnotatedString,
    modifier: Modifier = Modifier,
    color: Color = Color.Unspecified,
    fontSize: TextUnit = TextUnit.Unspecified,
    fontStyle: FontStyle? = null,
    fontWeight: FontWeight? = null,
    fontFamily: FontFamily? = null,
    letterSpacing: TextUnit = TextUnit.Unspecified,
    textDecoration: TextDecoration? = null,
    textAlign: TextAlign? = null,
    lineHeight: TextUnit = TextUnit.Unspecified,
    overflow: TextOverflow = TextOverflow.Clip,
    softWrap: Boolean = true,
    maxLines: Int = Int.MAX_VALUE,
    minLines: Int = 1,
    inlineContent: Map<String, InlineTextContent> = mapOf(),
    onTextLayout: (TextLayoutResult) -> Unit = {},
    style: TextStyle = LocalTextStyle.current
): Unit

High level element that displays text and provides semantics / accessibility information.

For ease of use, commonly used parameters from TextStyle are also present here. The order of precedence is as follows:

If a parameter is explicitly set here (i.e, it is not null or TextUnit.Unspecified), then this parameter will always be used.
If a parameter is not set, (null or TextUnit.Unspecified), then the corresponding value from style will be used instead.

See an example of displaying text with links where links apply the styling from the theme:

import androidx.compose.material.Text
import androidx.compose.ui.text.LinkAnnotation
import androidx.compose.ui.text.buildAnnotatedString
import androidx.compose.ui.text.withLink

val url = "https://developer.android.com/jetpack/compose"
val annotatedString = buildAnnotatedString {
    append("Build better apps faster with ")
    // If the annotation's TextLinkStyles is null,
    // then the link style defaults to Material styling.
    withLink(LinkAnnotation.Url(url = url)) { append("Jetpack Compose") }
}
Text(annotatedString)

Parameters
`text: AnnotatedString`	The text to be displayed.
`modifier: Modifier = Modifier`	`Modifier` to apply to this layout node.
`color: Color = Color.Unspecified`	`Color` to apply to the text. If `Color.Unspecified`, and `style` has no color set, this will be `LocalContentColor`.
`fontSize: TextUnit = TextUnit.Unspecified`	The size of glyphs to use when painting the text. See `TextStyle.fontSize`.
`fontStyle: FontStyle? = null`	The typeface variant to use when drawing the letters (e.g., italic). See `TextStyle.fontStyle`.
`fontWeight: FontWeight? = null`	The typeface thickness to use when painting the text (e.g., `FontWeight.Bold`).
`fontFamily: FontFamily? = null`	The font family to be used when rendering the text. See `TextStyle.fontFamily`.
`letterSpacing: TextUnit = TextUnit.Unspecified`	The amount of space to add between each letter. See `TextStyle.letterSpacing`.
`textDecoration: TextDecoration? = null`	The decorations to paint on the text (e.g., an underline). See `TextStyle.textDecoration`.
`textAlign: TextAlign? = null`	The alignment of the text within the lines of the paragraph. See `TextStyle.textAlign`.
`lineHeight: TextUnit = TextUnit.Unspecified`	Line height for the `Paragraph` in `TextUnit` unit, e.g. SP or EM. See `TextStyle.lineHeight`.
`overflow: TextOverflow = TextOverflow.Clip`	How visual overflow should be handled.
`softWrap: Boolean = true`	Whether the text should break at soft line breaks. If false, the glyphs in the text will be positioned as if there was unlimited horizontal space. If `softWrap` is false, `overflow` and TextAlign may have unexpected effects.
`maxLines: Int = Int.MAX_VALUE`	An optional maximum number of lines for the text to span, wrapping if necessary. If the text exceeds the given number of lines, it will be truncated according to `overflow` and `softWrap`. It is required that 1 <= `minLines`<= `maxLines`.
`minLines: Int = 1`	The minimum height in terms of minimum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`.
`inlineContent: Map<String, InlineTextContent> = mapOf()`	A map store composables that replaces certain ranges of the text. It's used to insert composables into text layout. Check `InlineTextContent` for more information.
`onTextLayout: (TextLayoutResult) -> Unit = {}`	Callback that is executed when a new text layout is calculated. A `TextLayoutResult` object that callback provides contains paragraph information, size of the text, baselines and other details. The callback can be used to add additional decoration or functionality to the text. For example, to draw selection around the text.
`style: TextStyle = LocalTextStyle.current`	Style configuration for the text such as color, font, line height etc.

TextButton

Cmn

Material Design text button

Added in 1.0.0

@Composable
@NonRestartableComposable
fun TextButton(
    onClick: () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    elevation: ButtonElevation? = null,
    shape: Shape = MaterialTheme.shapes.small,
    border: BorderStroke? = null,
    colors: ButtonColors = ButtonDefaults.textButtonColors(),
    contentPadding: PaddingValues = ButtonDefaults.TextButtonContentPadding,
    content: @Composable RowScope.() -> Unit
): Unit

Text buttons are typically used for less-pronounced actions, including those located in dialogs and cards. In cards, text buttons help maintain an emphasis on card content.

The default text style for internal Text components will be set to Typography.button.

import androidx.compose.material.Button
import androidx.compose.material.Text
import androidx.compose.material.TextButton

TextButton(onClick = { /* Do something! */ }) { Text("Text Button") }

Parameters
`onClick: () -> Unit`	Will be called when the user clicks the button
`modifier: Modifier = Modifier`	Modifier to be applied to the button
`enabled: Boolean = true`	Controls the enabled state of the button. When `false`, this button will not be clickable
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this button. You can use this to change the button's appearance or preview the button in different states. Note that if `null` is provided, interactions will still happen internally.
`elevation: ButtonElevation? = null`	`ButtonElevation` used to resolve the elevation for this button in different states. A TextButton typically has no elevation, see `Button` for a button with elevation.
`shape: Shape = MaterialTheme.shapes.small`	Defines the button's shape as well as its shadow
`border: BorderStroke? = null`	Border to draw around the button
`colors: ButtonColors = ButtonDefaults.textButtonColors()`	`ButtonColors` that will be used to resolve the background and content color for this button in different states. See `ButtonDefaults.textButtonColors`.
`contentPadding: PaddingValues = ButtonDefaults.TextButtonContentPadding`	The spacing values to apply internally between the container and the content
`content: @Composable RowScope.() -> Unit`	The content displayed on the button, expected to be text.

TextField

Cmn

Material Design filled text field.

Added in 1.8.0

@Composable
fun TextField(
    state: TextFieldState,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    readOnly: Boolean = false,
    textStyle: TextStyle = LocalTextStyle.current,
    label: (@Composable () -> Unit)? = null,
    placeholder: (@Composable () -> Unit)? = null,
    leadingIcon: (@Composable () -> Unit)? = null,
    trailingIcon: (@Composable () -> Unit)? = null,
    isError: Boolean = false,
    inputTransformation: InputTransformation? = null,
    outputTransformation: OutputTransformation? = null,
    keyboardOptions: KeyboardOptions = KeyboardOptions.Default,
    onKeyboardAction: KeyboardActionHandler? = null,
    lineLimits: TextFieldLineLimits = TextFieldLineLimits.Default,
    scrollState: ScrollState = rememberScrollState(),
    shape: Shape = TextFieldDefaults.TextFieldShape,
    colors: TextFieldColors = TextFieldDefaults.textFieldColors(),
    interactionSource: MutableInteractionSource? = null
): Unit

Filled text fields have more visual emphasis than outlined text fields, making them stand out when surrounded by other content and components.

Filled text field
image

If you are looking for an outlined version, see OutlinedTextField.

This overload of TextField uses TextFieldState to keep track of its text content and position of the cursor or selection.

A simple single line text field looks like:

import androidx.compose.foundation.text.input.TextFieldLineLimits
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.remember

TextField(
    state = rememberTextFieldState(),
    label = { Text("Label") },
    lineLimits = TextFieldLineLimits.SingleLine,
)

You can control the initial text input and selection:

import androidx.compose.foundation.text.input.TextFieldLineLimits
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.remember
import androidx.compose.ui.text.TextRange

val state = rememberTextFieldState("Initial text", TextRange(0, 12))
TextField(state = state, label = { Text("Label") }, lineLimits = TextFieldLineLimits.SingleLine)

You may provide a placeholder:

import androidx.compose.foundation.text.input.TextFieldLineLimits
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.remember

TextField(
    state = rememberTextFieldState(),
    lineLimits = TextFieldLineLimits.SingleLine,
    label = { Text("Email") },
    placeholder = { Text("example@gmail.com") },
)

You can also provide leading and trailing icons:

import androidx.compose.foundation.text.input.TextFieldLineLimits
import androidx.compose.foundation.text.input.clearText
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Clear
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.runtime.remember

val state = rememberTextFieldState()
TextField(
    state = state,
    lineLimits = TextFieldLineLimits.SingleLine,
    placeholder = { Text("placeholder") },
    leadingIcon = { Icon(Icons.Filled.Favorite, contentDescription = null) },
    trailingIcon = {
        IconButton(onClick = { state.clearText() }) {
            Icon(Icons.Filled.Clear, contentDescription = "Clear text")
        }
    },
)

To handle the error input state, use isError parameter:

import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.foundation.text.input.TextFieldLineLimits
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.LaunchedEffect
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.runtime.saveable.rememberSaveable
import androidx.compose.runtime.snapshotFlow
import androidx.compose.ui.Modifier
import androidx.compose.ui.semantics.error
import androidx.compose.ui.semantics.semantics
import androidx.compose.ui.text.input.KeyboardType

val state = rememberTextFieldState()
var isError by rememberSaveable { mutableStateOf(false) }

fun validate(text: CharSequence) {
    val atIndex = text.indexOf('@')
    isError = atIndex < 0 || text.indexOf('.', startIndex = atIndex) < 0
}

LaunchedEffect(Unit) {
    snapshotFlow { state.text }
        .collect {
            // Do something whenever text field value changes
            isError = false
        }
}
TextField(
    state = state,
    lineLimits = TextFieldLineLimits.SingleLine,
    label = { Text(if (isError) "Email*" else "Email") },
    isError = isError,
    keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Email),
    onKeyboardAction = { validate(state.text) },
    modifier =
        Modifier.semantics {
            // Provide localized description of the error
            if (isError) error("Email format is invalid.")
        },
)

Additionally, you may provide additional message at the bottom:

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.text.input.TextFieldLineLimits
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.ContentAlpha
import androidx.compose.material.MaterialTheme
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp

Column {
    TextField(
        state = rememberTextFieldState(),
        label = { Text("Label") },
        lineLimits = TextFieldLineLimits.SingleLine,
    )
    Text(
        text = "Helper message",
        color = MaterialTheme.colors.onSurface.copy(alpha = ContentAlpha.medium),
        style = MaterialTheme.typography.caption,
        modifier = Modifier.padding(start = 16.dp),
    )
}

Hiding a software keyboard on IME action performed:

import androidx.compose.foundation.text.KeyboardOptions
import androidx.compose.foundation.text.input.rememberTextFieldState
import androidx.compose.material.Text
import androidx.compose.material.TextField
import androidx.compose.runtime.remember
import androidx.compose.ui.platform.LocalSoftwareKeyboardController
import androidx.compose.ui.text.input.ImeAction

val keyboardController = LocalSoftwareKeyboardController.current
TextField(
    state = rememberTextFieldState(),
    label = { Text("Label") },
    keyboardOptions = KeyboardOptions(imeAction = ImeAction.Done),
    onKeyboardAction = { keyboardController?.hide() },
)

Parameters
`state: TextFieldState`	`TextFieldState` object that holds the internal editing state of this text field.
`modifier: Modifier = Modifier`	a `Modifier` for this text field
`enabled: Boolean = true`	controls the enabled state of the `TextField`. When `false`, the text field will be neither editable nor focusable, the input of the text field will not be selectable, visually text field will appear in the disabled UI state
`readOnly: Boolean = false`	controls the editable state of the `TextField`. When `true`, the text field can not be modified, however, a user can focus it and copy text from it. Read-only text fields are usually used to display pre-filled forms that user can not edit
`textStyle: TextStyle = LocalTextStyle.current`	the style to be applied to the input text. The default `textStyle` uses the `LocalTextStyle` defined by the theme
`label: (@Composable () -> Unit)? = null`	the optional label to be displayed inside the text field container. The default text style for internal `Text` is `Typography.caption` when the text field is in focus and `Typography.subtitle1` when the text field is not in focus
`placeholder: (@Composable () -> Unit)? = null`	the optional placeholder to be displayed when the text field is in focus and the input text is empty. The default text style for internal `Text` is `Typography.subtitle1`
`leadingIcon: (@Composable () -> Unit)? = null`	the optional leading icon to be displayed at the beginning of the text field container
`trailingIcon: (@Composable () -> Unit)? = null`	the optional trailing icon to be displayed at the end of the text field container
`isError: Boolean = false`	indicates if the text field's current value is in error. If set to true, the label, bottom indicator and trailing icon by default will be displayed in error color
`inputTransformation: InputTransformation? = null`	Optional `InputTransformation` that will be used to transform changes to the `TextFieldState` made by the user. The transformation will be applied to changes made by hardware and software keyboard events, pasting or dropping text, accessibility services, and tests. The transformation will not be applied when changing the `state` programmatically, or when the transformation is changed. If the transformation is changed on an existing text field, it will be applied to the next user edit. the transformation will not immediately affect the current `state`.
`outputTransformation: OutputTransformation? = null`	An `OutputTransformation` that transforms how the contents of the text field are presented.
`keyboardOptions: KeyboardOptions = KeyboardOptions.Default`	software keyboard options that contains configuration such as `KeyboardType` and `ImeAction`.
`onKeyboardAction: KeyboardActionHandler? = null`	Called when the user presses the action button in the input method editor (IME), or by pressing the enter key on a hardware keyboard. By default this parameter is null, and would execute the default behavior for a received IME Action e.g., `ImeAction.Done` would close the keyboard, `ImeAction.Next` would switch the focus to the next focusable item on the screen.
`lineLimits: TextFieldLineLimits = TextFieldLineLimits.Default`	Whether the text field should be `SingleLine`, scroll horizontally, and ignore newlines; or `MultiLine` and grow and scroll vertically. If `SingleLine` is passed, all newline characters ('\n') within the text will be replaced with regular whitespace (' '), ensuring that the contents of the text field are presented in a single line.
`scrollState: ScrollState = rememberScrollState()`	Scroll state that manages either horizontal or vertical scroll of the text field. If `lineLimits` is `SingleLine`, this text field is treated as single line with horizontal scroll behavior. In other cases the text field becomes vertically scrollable.
`shape: Shape = TextFieldDefaults.TextFieldShape`	the shape of the text field's container
`colors: TextFieldColors = TextFieldDefaults.textFieldColors()`	`TextFieldColors` that will be used to resolve color of the text, content (including label, placeholder, leading and trailing icons, indicator line) and background for this text field in different states. See `TextFieldDefaults.textFieldColors`
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this text field. You can use this to change the text field's appearance or preview the text field in different states. Note that if `null` is provided, interactions will still happen internally.

TextField

Cmn

Material Design filled text field.

Added in 1.4.0

@Composable
fun TextField(
    value: String,
    onValueChange: (String) -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    readOnly: Boolean = false,
    textStyle: TextStyle = LocalTextStyle.current,
    label: (@Composable () -> Unit)? = null,
    placeholder: (@Composable () -> Unit)? = null,
    leadingIcon: (@Composable () -> Unit)? = null,
    trailingIcon: (@Composable () -> Unit)? = null,
    isError: Boolean = false,
    visualTransformation: VisualTransformation = VisualTransformation.None,
    keyboardOptions: KeyboardOptions = KeyboardOptions.Default,
    keyboardActions: KeyboardActions = KeyboardActions(),
    singleLine: Boolean = false,
    maxLines: Int = if (singleLine) 1 else Int.MAX_VALUE,
    minLines: Int = 1,
    interactionSource: MutableInteractionSource? = null,
    shape: Shape = TextFieldDefaults.TextFieldShape,
    colors: TextFieldColors = TextFieldDefaults.textFieldColors()
): Unit

Filled text fields have more visual emphasis than outlined text fields, making them stand out when surrounded by other content and components.

Filled text field
image

If you are looking for an outlined version, see OutlinedTextField.

If apart from input text change you also want to observe the cursor location, selection range, or IME composition use the TextField overload with the TextFieldValue parameter instead.

Parameters
`value: String`	the input text to be shown in the text field
`onValueChange: (String) -> Unit`	the callback that is triggered when the input service updates the text. An updated text comes as a parameter of the callback
`modifier: Modifier = Modifier`	a `Modifier` for this text field
`enabled: Boolean = true`	controls the enabled state of the `TextField`. When `false`, the text field will be neither editable nor focusable, the input of the text field will not be selectable, visually text field will appear in the disabled UI state
`readOnly: Boolean = false`	controls the editable state of the `TextField`. When `true`, the text field can not be modified, however, a user can focus it and copy text from it. Read-only text fields are usually used to display pre-filled forms that user can not edit
`textStyle: TextStyle = LocalTextStyle.current`	the style to be applied to the input text. The default `textStyle` uses the `LocalTextStyle` defined by the theme
`label: (@Composable () -> Unit)? = null`	the optional label to be displayed inside the text field container. The default text style for internal `Text` is `Typography.caption` when the text field is in focus and `Typography.subtitle1` when the text field is not in focus
`placeholder: (@Composable () -> Unit)? = null`	the optional placeholder to be displayed when the text field is in focus and the input text is empty. The default text style for internal `Text` is `Typography.subtitle1`
`leadingIcon: (@Composable () -> Unit)? = null`	the optional leading icon to be displayed at the beginning of the text field container
`trailingIcon: (@Composable () -> Unit)? = null`	the optional trailing icon to be displayed at the end of the text field container
`isError: Boolean = false`	indicates if the text field's current value is in error. If set to true, the label, bottom indicator and trailing icon by default will be displayed in error color
`visualTransformation: VisualTransformation = VisualTransformation.None`	transforms the visual representation of the input `value` For example, you can use `PasswordVisualTransformation` to create a password text field. By default no visual transformation is applied
`keyboardOptions: KeyboardOptions = KeyboardOptions.Default`	software keyboard options that contains configuration such as `KeyboardType` and `ImeAction`.
`keyboardActions: KeyboardActions = KeyboardActions()`	when the input service emits an IME action, the corresponding callback is called. Note that this IME action may be different from what you specified in `KeyboardOptions.imeAction`.
`singleLine: Boolean = false`	when set to true, this text field becomes a single horizontally scrolling text field instead of wrapping onto multiple lines. The keyboard will be informed to not show the return key as the `ImeAction`. Note that `maxLines` parameter will be ignored as the maxLines attribute will be automatically set to 1.
`maxLines: Int = if (singleLine) 1 else Int.MAX_VALUE`	the maximum height in terms of maximum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`. This parameter is ignored when `singleLine` is true.
`minLines: Int = 1`	the minimum height in terms of minimum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`. This parameter is ignored when `singleLine` is true.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this text field. You can use this to change the text field's appearance or preview the text field in different states. Note that if `null` is provided, interactions will still happen internally.
`shape: Shape = TextFieldDefaults.TextFieldShape`	the shape of the text field's container
`colors: TextFieldColors = TextFieldDefaults.textFieldColors()`	`TextFieldColors` that will be used to resolve color of the text, content (including label, placeholder, leading and trailing icons, indicator line) and background for this text field in different states. See `TextFieldDefaults.textFieldColors`

TextField

Cmn

Material Design filled text field.

Added in 1.4.0

@Composable
fun TextField(
    value: TextFieldValue,
    onValueChange: (TextFieldValue) -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    readOnly: Boolean = false,
    textStyle: TextStyle = LocalTextStyle.current,
    label: (@Composable () -> Unit)? = null,
    placeholder: (@Composable () -> Unit)? = null,
    leadingIcon: (@Composable () -> Unit)? = null,
    trailingIcon: (@Composable () -> Unit)? = null,
    isError: Boolean = false,
    visualTransformation: VisualTransformation = VisualTransformation.None,
    keyboardOptions: KeyboardOptions = KeyboardOptions.Default,
    keyboardActions: KeyboardActions = KeyboardActions(),
    singleLine: Boolean = false,
    maxLines: Int = if (singleLine) 1 else Int.MAX_VALUE,
    minLines: Int = 1,
    interactionSource: MutableInteractionSource? = null,
    shape: Shape = TextFieldDefaults.TextFieldShape,
    colors: TextFieldColors = TextFieldDefaults.textFieldColors()
): Unit

Filled text fields have more visual emphasis than outlined text fields, making them stand out when surrounded by other content and components.

Filled text field
image

If you are looking for an outlined version, see OutlinedTextField. For a text field specifically designed for passwords or other secure content, see SecureTextField.

This overload provides access to the input text, cursor position, selection range and IME composition. If you only want to observe an input text change, use the TextField overload with the String parameter instead.

Parameters
`value: TextFieldValue`	the input `TextFieldValue` to be shown in the text field
`onValueChange: (TextFieldValue) -> Unit`	the callback that is triggered when the input service updates values in `TextFieldValue`. An updated `TextFieldValue` comes as a parameter of the callback
`modifier: Modifier = Modifier`	a `Modifier` for this text field
`enabled: Boolean = true`	controls the enabled state of the `TextField`. When `false`, the text field will be neither editable nor focusable, the input of the text field will not be selectable, visually text field will appear in the disabled UI state
`readOnly: Boolean = false`	controls the editable state of the `TextField`. When `true`, the text field can not be modified, however, a user can focus it and copy text from it. Read-only text fields are usually used to display pre-filled forms that user can not edit
`textStyle: TextStyle = LocalTextStyle.current`	the style to be applied to the input text. The default `textStyle` uses the `LocalTextStyle` defined by the theme
`label: (@Composable () -> Unit)? = null`	the optional label to be displayed inside the text field container. The default text style for internal `Text` is `Typography.caption` when the text field is in focus and `Typography.subtitle1` when the text field is not in focus
`placeholder: (@Composable () -> Unit)? = null`	the optional placeholder to be displayed when the text field is in focus and the input text is empty. The default text style for internal `Text` is `Typography.subtitle1`
`leadingIcon: (@Composable () -> Unit)? = null`	the optional leading icon to be displayed at the beginning of the text field container
`trailingIcon: (@Composable () -> Unit)? = null`	the optional trailing icon to be displayed at the end of the text field container
`isError: Boolean = false`	indicates if the text field's current value is in error state. If set to true, the label, bottom indicator and trailing icon by default will be displayed in error color
`visualTransformation: VisualTransformation = VisualTransformation.None`	transforms the visual representation of the input `value`. For example, you can use `PasswordVisualTransformation` to create a password text field. By default no visual transformation is applied
`keyboardOptions: KeyboardOptions = KeyboardOptions.Default`	software keyboard options that contains configuration such as `KeyboardType` and `ImeAction`.
`keyboardActions: KeyboardActions = KeyboardActions()`	when the input service emits an IME action, the corresponding callback is called. Note that this IME action may be different from what you specified in `KeyboardOptions.imeAction`.
`singleLine: Boolean = false`	when set to true, this text field becomes a single horizontally scrolling text field instead of wrapping onto multiple lines. The keyboard will be informed to not show the return key as the `ImeAction`. Note that `maxLines` parameter will be ignored as the maxLines attribute will be automatically set to 1.
`maxLines: Int = if (singleLine) 1 else Int.MAX_VALUE`	the maximum height in terms of maximum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`. This parameter is ignored when `singleLine` is true.
`minLines: Int = 1`	the minimum height in terms of minimum number of visible lines. It is required that 1 <= `minLines`<= `maxLines`. This parameter is ignored when `singleLine` is true.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this text field. You can use this to change the text field's appearance or preview the text field in different states. Note that if `null` is provided, interactions will still happen internally.
`shape: Shape = TextFieldDefaults.TextFieldShape`	the shape of the text field's container
`colors: TextFieldColors = TextFieldDefaults.textFieldColors()`	`TextFieldColors` that will be used to resolve color of the text, content (including label, placeholder, leading and trailing icons, indicator line) and background for this text field in different states. See `TextFieldDefaults.textFieldColors`

TopAppBar

Cmn

@Composable
fun TopAppBar(
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: Dp = AppBarDefaults.TopAppBarElevation,
    contentPadding: PaddingValues = AppBarDefaults.ContentPadding,
    content: @Composable RowScope.() -> Unit
): Unit

The top app bar displays information and actions relating to the current screen.

App bars: top
image

This TopAppBar has no pre-defined slots for content, allowing you to customize the layout of content inside. See the other TopAppBar overload for a TopAppBar that has opinionated slots for title, navigation icon, and trailing actions.

The LocalContentAlpha inside this TopAppBar is ContentAlpha.medium - this is the default for trailing and overflow icons. It is recommended that any text, and leading icons at the start of the TopAppBar use ContentAlpha.high instead.

Parameters
`modifier: Modifier = Modifier`	The `Modifier` to be applied to this TopAppBar
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for the TopAppBar. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this TopAppBar to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this TopAppBar.
`elevation: Dp = AppBarDefaults.TopAppBarElevation`	the elevation of this TopAppBar.
`contentPadding: PaddingValues = AppBarDefaults.ContentPadding`	the padding applied to the content of this TopAppBar
`content: @Composable RowScope.() -> Unit`	the content of this TopAppBar.The default layout here is a `Row`, so content inside will be placed horizontally.

TopAppBar

Cmn

@Composable
fun TopAppBar(
    title: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    navigationIcon: (@Composable () -> Unit)? = null,
    actions: @Composable RowScope.() -> Unit = {},
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: Dp = AppBarDefaults.TopAppBarElevation
): Unit

The top app bar displays information and actions relating to the current screen.

App bars: top
image

This TopAppBar has slots for a title, navigation icon, and actions. Note that the title slot is inset from the start according to spec - for custom use cases such as horizontally centering the title, use the other TopAppBar overload for a generic TopAppBar with no restriction on content.

import androidx.compose.material.AppBarDefaults
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Text
import androidx.compose.material.TopAppBar
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.icons.filled.Menu

TopAppBar(
    windowInsets = AppBarDefaults.topAppBarWindowInsets,
    title = { Text("Simple TopAppBar") },
    navigationIcon = {
        IconButton(onClick = { /* doSomething() */ }) {
            Icon(Icons.Filled.Menu, contentDescription = null)
        }
    },
    actions = {
        // RowScope here, so these icons will be placed horizontally
        IconButton(onClick = { /* doSomething() */ }) {
            Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
        }
        IconButton(onClick = { /* doSomething() */ }) {
            Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
        }
    },
)

Parameters
`title: @Composable () -> Unit`	The title to be displayed in the center of the TopAppBar
`modifier: Modifier = Modifier`	The `Modifier` to be applied to this TopAppBar
`navigationIcon: (@Composable () -> Unit)? = null`	The navigation icon displayed at the start of the TopAppBar. This should typically be an `IconButton` or `IconToggleButton`.
`actions: @Composable RowScope.() -> Unit = {}`	The actions displayed at the end of the TopAppBar. This should typically be `IconButton`s. The default layout here is a `Row`, so icons inside will be placed horizontally.
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for the TopAppBar. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this TopAppBar to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this TopAppBar.
`elevation: Dp = AppBarDefaults.TopAppBarElevation`	the elevation of this TopAppBar.

TopAppBar

Cmn

@Composable
fun TopAppBar(
    windowInsets: WindowInsets,
    modifier: Modifier = Modifier,
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: Dp = AppBarDefaults.TopAppBarElevation,
    contentPadding: PaddingValues = AppBarDefaults.ContentPadding,
    content: @Composable RowScope.() -> Unit
): Unit

The top app bar displays information and actions relating to the current screen.

App bars: top
image

This particular overload provides ability to specify WindowInsets. Recommended value can be found in AppBarDefaults.topAppBarWindowInsets.

Parameters
`windowInsets: WindowInsets`	a window insets that app bar will respect.
`modifier: Modifier = Modifier`	The `Modifier` to be applied to this TopAppBar
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for the TopAppBar. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this TopAppBar to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this TopAppBar.
`elevation: Dp = AppBarDefaults.TopAppBarElevation`	the elevation of this TopAppBar.
`contentPadding: PaddingValues = AppBarDefaults.ContentPadding`	the padding applied to the content of this TopAppBar
`content: @Composable RowScope.() -> Unit`	the content of this TopAppBar.The default layout here is a `Row`, so content inside will be placed horizontally.

TopAppBar

Cmn

@Composable
fun TopAppBar(
    title: @Composable () -> Unit,
    windowInsets: WindowInsets,
    modifier: Modifier = Modifier,
    navigationIcon: (@Composable () -> Unit)? = null,
    actions: @Composable RowScope.() -> Unit = {},
    backgroundColor: Color = MaterialTheme.colors.primarySurface,
    contentColor: Color = contentColorFor(backgroundColor),
    elevation: Dp = AppBarDefaults.TopAppBarElevation
): Unit

The top app bar displays information and actions relating to the current screen.

App bars: top
image

This particular overload provides ability to specify WindowInsets. Recommended value can be found in AppBarDefaults.topAppBarWindowInsets.

import androidx.compose.material.AppBarDefaults
import androidx.compose.material.Icon
import androidx.compose.material.IconButton
import androidx.compose.material.Text
import androidx.compose.material.TopAppBar
import androidx.compose.material.icons.Icons
import androidx.compose.material.icons.filled.Favorite
import androidx.compose.material.icons.filled.Menu

TopAppBar(
    windowInsets = AppBarDefaults.topAppBarWindowInsets,
    title = { Text("Simple TopAppBar") },
    navigationIcon = {
        IconButton(onClick = { /* doSomething() */ }) {
            Icon(Icons.Filled.Menu, contentDescription = null)
        }
    },
    actions = {
        // RowScope here, so these icons will be placed horizontally
        IconButton(onClick = { /* doSomething() */ }) {
            Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
        }
        IconButton(onClick = { /* doSomething() */ }) {
            Icon(Icons.Filled.Favorite, contentDescription = "Localized description")
        }
    },
)

Parameters
`title: @Composable () -> Unit`	The title to be displayed in the center of the TopAppBar
`windowInsets: WindowInsets`	a window insets that app bar will respect.
`modifier: Modifier = Modifier`	The `Modifier` to be applied to this TopAppBar
`navigationIcon: (@Composable () -> Unit)? = null`	The navigation icon displayed at the start of the TopAppBar. This should typically be an `IconButton` or `IconToggleButton`.
`actions: @Composable RowScope.() -> Unit = {}`	The actions displayed at the end of the TopAppBar. This should typically be `IconButton`s. The default layout here is a `Row`, so icons inside will be placed horizontally.
`backgroundColor: Color = MaterialTheme.colors.primarySurface`	The background color for the TopAppBar. Use `Color.Transparent` to have no color.
`contentColor: Color = contentColorFor(backgroundColor)`	The preferred content color provided by this TopAppBar to its children. Defaults to either the matching content color for `backgroundColor`, or if `backgroundColor` is not a color from the theme, this will keep the same value set above this TopAppBar.
`elevation: Dp = AppBarDefaults.TopAppBarElevation`	the elevation of this TopAppBar.

TriStateCheckbox

Cmn

Added in 1.0.0

@Composable
fun TriStateCheckbox(
    state: ToggleableState,
    onClick: (() -> Unit)?,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    colors: CheckboxColors = CheckboxDefaults.colors()
): Unit

Material Design checkbox

Checkboxes can have a parent-child relationship with other checkboxes. When the parent checkbox is checked, all child checkboxes are checked. If a parent checkbox is unchecked, all child checkboxes are unchecked. If some, but not all, child checkboxes are checked, the parent checkbox becomes an indeterminate checkbox.

Checkboxes
image

import androidx.compose.foundation.layout.Column
import androidx.compose.foundation.layout.Spacer
import androidx.compose.foundation.layout.padding
import androidx.compose.foundation.layout.size
import androidx.compose.material.Checkbox
import androidx.compose.material.CheckboxDefaults
import androidx.compose.material.MaterialTheme
import androidx.compose.material.TriStateCheckbox
import androidx.compose.runtime.mutableStateOf
import androidx.compose.runtime.remember
import androidx.compose.ui.Modifier
import androidx.compose.ui.state.ToggleableState
import androidx.compose.ui.unit.dp

Column {
    // define dependent checkboxes states
    val (state, onStateChange) = remember { mutableStateOf(true) }
    val (state2, onStateChange2) = remember { mutableStateOf(true) }

    // TriStateCheckbox state reflects state of dependent checkboxes
    val parentState =
        remember(state, state2) {
            if (state && state2) ToggleableState.On
            else if (!state && !state2) ToggleableState.Off else ToggleableState.Indeterminate
        }
    // click on TriStateCheckbox can set state for dependent checkboxes
    val onParentClick = {
        val s = parentState != ToggleableState.On
        onStateChange(s)
        onStateChange2(s)
    }

    TriStateCheckbox(
        state = parentState,
        onClick = onParentClick,
        colors = CheckboxDefaults.colors(checkedColor = MaterialTheme.colors.primary),
    )
    Spacer(Modifier.size(25.dp))
    Column(Modifier.padding(10.dp, 0.dp, 0.dp, 0.dp)) {
        Checkbox(state, onStateChange)
        Spacer(Modifier.size(25.dp))
        Checkbox(state2, onStateChange2)
    }
}

Parameters
`state: ToggleableState`	whether TriStateCheckbox is checked, unchecked or in indeterminate state
`onClick: (() -> Unit)?`	callback to be invoked when checkbox is being clicked, therefore the change of ToggleableState state is requested. If null, then this is passive and relies entirely on a higher-level component to control the state.
`modifier: Modifier = Modifier`	Modifier to be applied to the layout of the checkbox
`enabled: Boolean = true`	whether the component is enabled or grayed out
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this checkbox. You can use this to change the checkbox's appearance or preview the checkbox in different states. Note that if `null` is provided, interactions will still happen internally.
`colors: CheckboxColors = CheckboxDefaults.colors()`	`CheckboxColors` that will be used to determine the color of the checkmark / box / border in different states. See `CheckboxDefaults.colors`.

See also
`Checkbox`	if you want a simple component that represents Boolean state

contentColorFor

Cmn

Added in 1.10.0

@Composable
fun contentColorFor(backgroundColor: Color): Color

The Material color system contains pairs of colors that are typically used for the background and content color inside a component. For example, a Button typically uses primary for its background, and onPrimary for the color of its content (usually text or iconography).

This function tries to match the provided backgroundColor to a 'background' color in this Colors, and then will return the corresponding color used for content. For example, when backgroundColor is Colors.primary, this will return Colors.onPrimary.

If backgroundColor does not match a background color in the theme, this will return the current value of LocalContentColor as a best-effort color.

Returns
`Color`	the matching content color for `backgroundColor`. If `backgroundColor` is not present in the theme's `Colors`, then returns the current value of `LocalContentColor`.

See also
`contentColorFor`

darkColors

Cmn

Added in 1.10.0

fun darkColors(
    primary: Color = Color(0xFFBB86FC),
    primaryVariant: Color = Color(0xFF3700B3),
    secondary: Color = Color(0xFF03DAC6),
    secondaryVariant: Color = secondary,
    background: Color = Color(0xFF121212),
    surface: Color = Color(0xFF121212),
    error: Color = Color(0xFFCF6679),
    onPrimary: Color = Color.Black,
    onSecondary: Color = Color.Black,
    onBackground: Color = Color.White,
    onSurface: Color = Color.White,
    onError: Color = Color.Black
): Colors

Creates a complete color definition for the Material color specification using the default dark theme values.

Note: secondaryVariant is typically the same as secondary in dark theme since contrast levels are higher, and hence there is less need for a separate secondary color.

See also
`lightColors`

lightColors

Cmn

Added in 1.10.0

fun lightColors(
    primary: Color = Color(0xFF6200EE),
    primaryVariant: Color = Color(0xFF3700B3),
    secondary: Color = Color(0xFF03DAC6),
    secondaryVariant: Color = Color(0xFF018786),
    background: Color = Color.White,
    surface: Color = Color.White,
    error: Color = Color(0xFFB00020),
    onPrimary: Color = Color.White,
    onSecondary: Color = Color.Black,
    onBackground: Color = Color.Black,
    onSurface: Color = Color.Black,
    onError: Color = Color.White
): Colors

Creates a complete color definition for the Material color specification using the default light theme values.

See also
`darkColors`

rememberBackdropScaffoldState

Cmn

Added in 1.0.0

@Composable
fun rememberBackdropScaffoldState(
    initialValue: BackdropValue,
    animationSpec: AnimationSpec<Float> = BackdropScaffoldDefaults.AnimationSpec,
    confirmStateChange: (BackdropValue) -> Boolean = { true },
    snackbarHostState: SnackbarHostState = remember { SnackbarHostState() }
): BackdropScaffoldState

Create and remember a BackdropScaffoldState.

Parameters
`initialValue: BackdropValue`	The initial value of the state.
`animationSpec: AnimationSpec<Float> = BackdropScaffoldDefaults.AnimationSpec`	The default animation that will be used to animate to a new state.
`confirmStateChange: (BackdropValue) -> Boolean = { true }`	Optional callback invoked to confirm or veto a pending state change.
`snackbarHostState: SnackbarHostState = remember { SnackbarHostState() }`	The `SnackbarHostState` used to show snackbars inside the scaffold.

rememberBottomDrawerState

Cmn

Added in 1.7.0

@Composable
fun rememberBottomDrawerState(
    initialValue: BottomDrawerValue,
    confirmStateChange: (BottomDrawerValue) -> Boolean = { true },
    animationSpec: AnimationSpec<Float> = DrawerDefaults.AnimationSpec
): BottomDrawerState

Create and remember a BottomDrawerState.

Parameters
`initialValue: BottomDrawerValue`	The initial value of the state.
`confirmStateChange: (BottomDrawerValue) -> Boolean = { true }`	Optional callback invoked to confirm or veto a pending state change.
`animationSpec: AnimationSpec<Float> = DrawerDefaults.AnimationSpec`	The animation spec to be used for open/close animations, as well as settling when a user lets go.

rememberBottomSheetScaffoldState

Cmn

Added in 1.6.0

@Composable
fun rememberBottomSheetScaffoldState(
    bottomSheetState: BottomSheetState = rememberBottomSheetState(Collapsed),
    snackbarHostState: SnackbarHostState = remember { SnackbarHostState() }
): BottomSheetScaffoldState

Create and remember a BottomSheetScaffoldState.

Parameters
`bottomSheetState: BottomSheetState = rememberBottomSheetState(Collapsed)`	The state of the persistent bottom sheet.
`snackbarHostState: SnackbarHostState = remember { SnackbarHostState() }`	The `SnackbarHostState` used to show snackbars inside the scaffold.

rememberBottomSheetState

Cmn

Added in 1.0.0

@Composable
fun rememberBottomSheetState(
    initialValue: BottomSheetValue,
    animationSpec: AnimationSpec<Float> = BottomSheetScaffoldDefaults.AnimationSpec,
    confirmStateChange: (BottomSheetValue) -> Boolean = { true }
): BottomSheetState

Create a BottomSheetState and remember it.

Parameters
`initialValue: BottomSheetValue`	The initial value of the state.
`animationSpec: AnimationSpec<Float> = BottomSheetScaffoldDefaults.AnimationSpec`	The default animation that will be used to animate to a new state.
`confirmStateChange: (BottomSheetValue) -> Boolean = { true }`	Optional callback invoked to confirm or veto a pending state change.

rememberDismissState

Cmn

Added in 1.0.0

@Composable
@ExperimentalMaterialApi
fun rememberDismissState(
    initialValue: DismissValue = Default,
    confirmStateChange: (DismissValue) -> Boolean = { true }
): DismissState

Create and remember a DismissState.

Parameters
`initialValue: DismissValue = Default`	The initial value of the state.
`confirmStateChange: (DismissValue) -> Boolean = { true }`	Optional callback invoked to confirm or veto a pending state change.

rememberDrawerState

Cmn

Added in 1.0.0

@Composable
fun rememberDrawerState(
    initialValue: DrawerValue,
    confirmStateChange: (DrawerValue) -> Boolean = { true }
): DrawerState

Create and remember a DrawerState.

Parameters
`initialValue: DrawerValue`	The initial value of the state.
`confirmStateChange: (DrawerValue) -> Boolean = { true }`	Optional callback invoked to confirm or veto a pending state change.

rememberModalBottomSheetState

Cmn

Added in 1.4.0

@Composable
fun rememberModalBottomSheetState(
    initialValue: ModalBottomSheetValue,
    animationSpec: AnimationSpec<Float> = ModalBottomSheetDefaults.AnimationSpec,
    confirmValueChange: (ModalBottomSheetValue) -> Boolean = { true },
    skipHalfExpanded: Boolean = false
): ModalBottomSheetState

Create a ModalBottomSheetState and remember it.

Parameters
`initialValue: ModalBottomSheetValue`	The initial value of the state.
`animationSpec: AnimationSpec<Float> = ModalBottomSheetDefaults.AnimationSpec`	The default animation that will be used to animate to a new state.
`confirmValueChange: (ModalBottomSheetValue) -> Boolean = { true }`	Optional callback invoked to confirm or veto a pending state change.
`skipHalfExpanded: Boolean = false`	Whether the half expanded state, if the sheet is tall enough, should be skipped. If true, the sheet will always expand to the `Expanded` state and move to the `Hidden` state when hiding the sheet, either programmatically or by user interaction. Must not be set to true if the `initialValue` is `ModalBottomSheetValue.HalfExpanded`. If supplied with `ModalBottomSheetValue.HalfExpanded` for the `initialValue`, an `IllegalArgumentException` will be thrown.

rememberScaffoldState

Cmn

Added in 1.0.0

@Composable
fun rememberScaffoldState(
    drawerState: DrawerState = rememberDrawerState(DrawerValue.Closed),
    snackbarHostState: SnackbarHostState = remember { SnackbarHostState() }
): ScaffoldState

Creates a ScaffoldState with the default animation clock and memoizes it.

Parameters
`drawerState: DrawerState = rememberDrawerState(DrawerValue.Closed)`	the drawer state
`snackbarHostState: SnackbarHostState = remember { SnackbarHostState() }`	instance of `SnackbarHostState` to be used to show `Snackbar`s inside of the `Scaffold`

rememberSwipeableState

Cmn

Added in 1.0.0

Deprecated in 1.6.0

@Composable
@ExperimentalMaterialApi
fun <T : Any> rememberSwipeableState(
    initialValue: T,
    animationSpec: AnimationSpec<Float> = AnimationSpec,
    confirmStateChange: (newValue) -> Boolean = { true }
): SwipeableState<T>

Create and remember a SwipeableState with the default animation clock.

Parameters
`initialValue: T`	The initial value of the state.
`animationSpec: AnimationSpec<Float> = AnimationSpec`	The default animation that will be used to animate to a new state.
`confirmStateChange: (newValue) -> Boolean = { true }`	Optional callback invoked to confirm or veto a pending state change.

ripple

Cmn

Added in 1.10.0

fun ripple(
    bounded: Boolean = true,
    radius: Dp = Dp.Unspecified,
    color: Color = Color.Unspecified
): IndicationNodeFactory

Creates a Ripple using the provided values and values inferred from the theme.

A Ripple is a Material implementation of Indication that expresses different Interactions by drawing ripple animations and state layers.

A Ripple responds to PressInteraction.Press by starting a new animation, and responds to other Interactions by showing a fixed state layer with varying alpha values depending on the Interaction.

MaterialTheme provides Ripples using androidx.compose.foundation.LocalIndication, so a Ripple will be used as the default Indication inside components such as androidx.compose.foundation.clickable and androidx.compose.foundation.indication, in addition to Material provided components that use a Ripple as well.

You can also explicitly create a Ripple and provide it to custom components in order to change the parameters from the default, such as to create an unbounded ripple with a fixed size.

To create a Ripple with a manually defined color that can change over time, see the other ripple overload with a ColorProducer parameter. This will avoid unnecessary recompositions when changing the color, and preserve existing ripple state when the color changes.

Parameters
`bounded: Boolean = true`	If true, ripples are clipped by the bounds of the target layout. Unbounded ripples always animate from the target layout center, bounded ripples animate from the touch position.
`radius: Dp = Dp.Unspecified`	the radius for the ripple. If `Dp.Unspecified` is provided then the size will be calculated based on the target layout size.
`color: Color = Color.Unspecified`	the color of the ripple. This color is usually the same color used by the text or iconography in the component. This color will then have `RippleDefaults.rippleAlpha` applied to calculate the final color used to draw the ripple. If `Color.Unspecified` is provided the color used will be `RippleDefaults.rippleColor` instead.

ripple

Cmn

Added in 1.10.0

fun ripple(
    color: ColorProducer,
    bounded: Boolean = true,
    radius: Dp = Dp.Unspecified
): IndicationNodeFactory

Creates a Ripple using the provided values and values inferred from the theme.

A Ripple is a Material implementation of Indication that expresses different Interactions by drawing ripple animations and state layers.

A Ripple responds to PressInteraction.Press by starting a new ripple animation, and responds to other Interactions by showing a fixed state layer with varying alpha values depending on the Interaction.

You can also explicitly create a Ripple and provide it to custom components in order to change the parameters from the default, such as to create an unbounded ripple with a fixed size.

To create a Ripple with a static color, see the ripple overload with a Color parameter. This overload is optimized for Ripples that have dynamic colors that change over time, to reduce unnecessary recompositions.

Parameters
`color: ColorProducer`	the color of the ripple. This color is usually the same color used by the text or iconography in the component. This color will then have `RippleDefaults.rippleAlpha` applied to calculate the final color used to draw the ripple. If you are creating this `ColorProducer` outside of composition (where it will be automatically remembered), make sure that its instance is stable (such as by remembering the object that holds it), or remember the returned `ripple` object to make sure that ripple nodes are not being created each recomposition.
`bounded: Boolean = true`	If true, ripples are clipped by the bounds of the target layout. Unbounded ripples always animate from the target layout center, bounded ripples animate from the touch position.
`radius: Dp = Dp.Unspecified`	the radius for the ripple. If `Dp.Unspecified` is provided then the size will be calculated based on the target layout size.

Extension functions

BottomNavigationItem

Cmn

Material Design bottom navigation

Added in 1.10.0

@Composable
fun RowScope.BottomNavigationItem(
    selected: Boolean,
    onClick: () -> Unit,
    icon: @Composable () -> Unit,
    modifier: Modifier = Modifier,
    enabled: Boolean = true,
    label: (@Composable () -> Unit)? = null,
    alwaysShowLabel: Boolean = true,
    interactionSource: MutableInteractionSource? = null,
    selectedContentColor: Color = LocalContentColor.current,
    unselectedContentColor: Color = selectedContentColor.copy(alpha = ContentAlpha.medium)
): Unit

The recommended configuration for a BottomNavigationItem depends on how many items there are inside a BottomNavigation:

Three destinations: Display icons and text labels for all destinations.
Four destinations: Active destinations display an icon and text label. Inactive destinations display icons, and text labels are recommended.
Five destinations: Active destinations display an icon and text label. Inactive destinations use icons, and use text labels if space permits.

A BottomNavigationItem always shows text labels (if it exists) when selected. Showing text labels if not selected is controlled by alwaysShowLabel.

Parameters
`selected: Boolean`	whether this item is selected
`onClick: () -> Unit`	the callback to be invoked when this item is selected
`icon: @Composable () -> Unit`	icon for this item, typically this will be an `Icon`
`modifier: Modifier = Modifier`	optional `Modifier` for this item
`enabled: Boolean = true`	controls the enabled state of this item. When `false`, this item will not be clickable and will appear disabled to accessibility services.
`label: (@Composable () -> Unit)? = null`	optional text label for this item
`alwaysShowLabel: Boolean = true`	whether to always show the label for this item. If false, the label will only be shown when this item is selected.
`interactionSource: MutableInteractionSource? = null`	an optional hoisted `MutableInteractionSource` for observing and emitting `Interaction`s for this item. You can use this to change the item's appearance or preview the item in different states. Note that if `null` is provided, interactions will still happen internally.
`selectedContentColor: Color = LocalContentColor.current`	the color of the text label and icon when this item is selected, and the color of the ripple.
`unselectedContentColor: Color = selectedContentColor.copy(alpha = ContentAlpha.medium)`	the color of the text label and icon when this item is not selected

contentColorFor

Cmn

Added in 1.10.0

fun Colors.contentColorFor(backgroundColor: Color): Color

If backgroundColor does not match a background color in the theme, this will return Color.Unspecified.

Returns
`Color`	the matching content color for `backgroundColor`. If `backgroundColor` is not present in the theme's `Colors`, then returns `Color.Unspecified`.

See also
`contentColorFor`

minimumInteractiveComponentSize

Cmn

Added in 1.4.0

fun Modifier.minimumInteractiveComponentSize(): Modifier

Reserves at least 48.dp in size to disambiguate touch interactions if the element would measure smaller.

https://m2.material.io/design/usability/accessibility.html#layout-and-typography

This uses the Material recommended minimum size of 48.dp x 48.dp, which may not the same as the system enforced minimum size. The minimum clickable / touch target size (48.dp by default) is controlled by the system via ViewConfiguration and automatically expanded at the touch input layer.

This modifier is not needed for touch target expansion to happen. It only affects layout, to make sure there is adequate space for touch target expansion.

Because layout constraints are affected by modifier order, for this modifier to take effect, it must come before any size modifiers on the element that might limit its constraints.

swipeable

Cmn

@ExperimentalMaterialApi
fun <T : Any?> Modifier.swipeable(
    state: SwipeableState<T>,
    anchors: Map<Float, T>,
    orientation: Orientation,
    enabled: Boolean = true,
    reverseDirection: Boolean = false,
    interactionSource: MutableInteractionSource? = null,
    thresholds: (from, to) -> ThresholdConfig = { _, _ -> FixedThreshold(56.dp) },
    resistance: ResistanceConfig? = resistanceConfig(anchors.keys),
    velocityThreshold: Dp = VelocityThreshold
): Modifier

Enable swipe gestures between a set of predefined states.

To use this, you must provide a map of anchors (in pixels) to states (of type T). Note that this map cannot be empty and cannot have two anchors mapped to the same state.

When a swipe is detected, the offset of the SwipeableState will be updated with the swipe delta. You should use this offset to move your content accordingly (see Modifier.offsetPx). When the swipe ends, the offset will be animated to one of the anchors and when that anchor is reached, the value of the SwipeableState will also be updated to the state corresponding to the new anchor. The target anchor is calculated based on the provided positional thresholds.

Swiping is constrained between the minimum and maximum anchors. If the user attempts to swipe past these bounds, a resistance effect will be applied by default. The amount of resistance at each edge is specified by the resistance config. To disable all resistance, set it to null.

For an example of a swipeable with three states, see:

import androidx.compose.foundation.background
import androidx.compose.foundation.gestures.Orientation
import androidx.compose.foundation.layout.Box
import androidx.compose.foundation.layout.offset
import androidx.compose.foundation.layout.size
import androidx.compose.foundation.layout.width
import androidx.compose.material.FractionalThreshold
import androidx.compose.material.Text
import androidx.compose.material.rememberSwipeableState
import androidx.compose.material.swipeable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.Color
import androidx.compose.ui.platform.LocalDensity
import androidx.compose.ui.unit.IntOffset
import androidx.compose.ui.unit.dp
import androidx.compose.ui.unit.sp

// Draw a slider-like composable consisting of a red square moving along a
// black background, with three states: "A" (min), "B" (middle), and "C" (max).
val width = 350.dp
val squareSize = 50.dp

val swipeableState = rememberSwipeableState("A")
val sizePx = with(LocalDensity.current) { (width - squareSize).toPx() }
val anchors = mapOf(0f to "A", sizePx / 2 to "B", sizePx to "C")

Box(
    modifier =
        Modifier.width(width)
            .swipeable(
                state = swipeableState,
                anchors = anchors,
                thresholds = { _, _ -> FractionalThreshold(0.5f) },
                orientation = Orientation.Horizontal,
            )
            .background(Color.Black)
) {
    Box(
        Modifier.offset { IntOffset(swipeableState.offset.value.roundToInt(), 0) }
            .size(squareSize)
            .background(Color.Red),
        contentAlignment = Alignment.Center,
    ) {
        Text(swipeableState.currentValue, color = Color.White, fontSize = 24.sp)
    }
}

Parameters
`<T : Any?>`	The type of the state.
`state: SwipeableState<T>`	The state of the `swipeable`.
`anchors: Map<Float, T>`	Pairs of anchors and states, used to map anchors to states and vice versa.
`orientation: Orientation`	The orientation in which the `swipeable` can be swiped.
`enabled: Boolean = true`	Whether this `swipeable` is enabled and should react to the user's input.
`reverseDirection: Boolean = false`	Whether to reverse the direction of the swipe, so a top to bottom swipe will behave like bottom to top, and a left to right swipe will behave like right to left.
`interactionSource: MutableInteractionSource? = null`	Optional `MutableInteractionSource` that will passed on to the internal `Modifier.draggable`.
`thresholds: (from, to) -> ThresholdConfig = { _, _ -> FixedThreshold(56.dp) }`	Specifies where the thresholds between the states are. The thresholds will be used to determine which state to animate to when swiping stops. This is represented as a lambda that takes two states and returns the threshold between them in the form of a `ThresholdConfig`. Note that the order of the states corresponds to the swipe direction.
`resistance: ResistanceConfig? = resistanceConfig(anchors.keys)`	Controls how much resistance will be applied when swiping past the bounds.
`velocityThreshold: Dp = VelocityThreshold`	The threshold (in dp per second) that the end velocity has to exceed in order to animate to the next state, even if the positional `thresholds` have not been reached.

Top-level properties

LocalAbsoluteElevation

Cmn

Added in 1.0.0

val LocalAbsoluteElevation: ProvidableCompositionLocal<Dp>

CompositionLocal containing the current absolute elevation provided by Surface components. This absolute elevation is a sum of all the previous elevations. Absolute elevation is only used for calculating elevation overlays in dark theme, and is not used for drawing the shadow in a Surface. See ElevationOverlay for more information on elevation overlays.

import androidx.compose.material.LocalAbsoluteElevation
import androidx.compose.material.Surface
import androidx.compose.ui.unit.dp

Surface(elevation = 4.dp) {
    // This will equal 4.dp
    val elevation = LocalAbsoluteElevation.current
    Surface(elevation = 2.dp) {
        // This will equal 6.dp (4 + 2)
        val elevation = LocalAbsoluteElevation.current
    }
}

LocalContentAlpha

Cmn

Added in 1.0.0

val LocalContentAlpha: ProvidableCompositionLocal<Float>

CompositionLocal containing the preferred content alpha for a given position in the hierarchy. This alpha is used for text and iconography (Text and Icon) to emphasize / de-emphasize different parts of a component. See the Material guide on Text Legibility for more information on alpha levels used by text and iconography.

See ContentAlpha for the default levels used by most Material components.

MaterialTheme sets this to ContentAlpha.high by default, as this is the default alpha for body text.

import androidx.compose.foundation.layout.Column
import androidx.compose.material.ContentAlpha
import androidx.compose.material.LocalContentAlpha
import androidx.compose.material.Text
import androidx.compose.runtime.CompositionLocalProvider

// Note the alpha values listed below are the values for light theme. The values are slightly
// different in dark theme to provide proper contrast against the background.
Column {
    Text(
        "No content alpha applied - uses the default content alpha set by MaterialTheme - " +
            "87% alpha"
    )
    CompositionLocalProvider(LocalContentAlpha provides 1.00f) {
        Text("1.00f alpha applied - 100% alpha")
    }
    CompositionLocalProvider(LocalContentAlpha provides ContentAlpha.high) {
        Text("High content alpha applied - 87% alpha")
    }
    CompositionLocalProvider(LocalContentAlpha provides ContentAlpha.medium) {
        Text("Medium content alpha applied - 60% alpha")
    }
    CompositionLocalProvider(LocalContentAlpha provides ContentAlpha.disabled) {
        Text("Disabled content alpha applied - 38% alpha")
    }
}

LocalContentColor

Cmn

Added in 1.0.0

val LocalContentColor: ProvidableCompositionLocal<Color>

CompositionLocal containing the preferred content color for a given position in the hierarchy. This typically represents the on color for a color in Colors. For example, if the background color is Colors.surface, this color is typically set to Colors.onSurface.

This color should be used for any typography / iconography, to ensure that the color of these adjusts when the background color changes. For example, on a dark background, text should be light, and on a light background, text should be dark.

Defaults to Color.Black if no color has been explicitly set.

LocalElevationOverlay

Cmn

Added in 1.0.0

val LocalElevationOverlay: ProvidableCompositionLocal<ElevationOverlay?>

CompositionLocal containing the ElevationOverlay used by Surface components. Provide null to turn off ElevationOverlays for the children within this CompositionLocal..

See also
`ElevationOverlay`

LocalMinimumInteractiveComponentEnforcement

Cmn

Added in 1.4.0

@ExperimentalMaterialApi
val LocalMinimumInteractiveComponentEnforcement: ProvidableCompositionLocal<Boolean>

CompositionLocal that configures whether Material components that have a visual size that is lower than the minimum touch target size for accessibility (such as Button) will include extra space outside the component to ensure that they are accessible. If set to false there will be no extra space, and so it is possible that if the component is placed near the edge of a layout / near to another component without any padding, there will not be enough space for an accessible touch target.

LocalMinimumTouchTargetEnforcement

Cmn

Added in 1.4.0

Deprecated in 1.4.0

@ExperimentalMaterialApi
val LocalMinimumTouchTargetEnforcement: ProvidableCompositionLocal<Boolean>

LocalRippleConfiguration

Cmn

Added in 1.7.0

val LocalRippleConfiguration: ProvidableCompositionLocal<RippleConfiguration?>

CompositionLocal used for providing RippleConfiguration down the tree. This acts as a tree-local 'override' for ripples used inside components that you cannot directly control, such as to change the color of a specific component's ripple, or disable it entirely by providing null.

In most cases you should rely on the default theme behavior for consistency with other components

this exists as an escape hatch for individual components and is not intended to be used for full theme customization across an application. For this use case you should instead build your own custom ripple that queries your design system theme values directly using createRippleModifierNode.

LocalTextStyle

Cmn

Added in 1.0.0

val LocalTextStyle: ProvidableCompositionLocal<TextStyle>

CompositionLocal containing the preferred TextStyle that will be used by Text components by default. To set the value for this CompositionLocal, see ProvideTextStyle which will merge any missing TextStyle properties with the existing TextStyle set in this CompositionLocal.

See also
`ProvideTextStyle`

Extension properties

primarySurface

Cmn