SplitAttributes.SplitType

public static final @NonNull SplitAttributes.SplitType SPLIT_TYPE_EQUAL

A split type in which the primary and secondary containers occupy equal portions of the parent window.

Serves as the default SplitType.

public static final @NonNull SplitAttributes.SplitType SPLIT_TYPE_EXPAND

A split type in which the primary and secondary activity containers each expand to fill the parent window; the secondary container overlays the primary container.

It is useful to use this SplitType with the function set in SplitController.setSplitAttributesCalculator to expand the activity containers in some device or window states. The following sample shows how to always fill the parent bounds if the device is in portrait orientation:

import androidx.window.embedding.SplitAttributes
import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EXPAND
import androidx.window.embedding.SplitController

SplitController.getInstance(context).setSplitAttributesCalculator { params ->
    // A sample to always fill task bounds when the device is in portrait.
    val tag = params.splitRuleTag
    val bounds = params.parentWindowMetrics.bounds
    val defaultSplitAttributes = params.defaultSplitAttributes
    val areDefaultConstraintsSatisfied = params.areDefaultConstraintsSatisfied

    val expandContainersAttrs =
        SplitAttributes.Builder().setSplitType(SPLIT_TYPE_EXPAND).build()
    if (!areDefaultConstraintsSatisfied) {
        return@setSplitAttributesCalculator expandContainersAttrs
    }
    // Always expand containers for the splitRule tagged as
    // TAG_SPLIT_RULE_EXPAND_IN_PORTRAIT if the device is in portrait
    // even if [areDefaultConstraintsSatisfied] reports true.
    if (bounds.height() > bounds.width() && TAG_SPLIT_RULE_EXPAND_IN_PORTRAIT == tag) {
        return@setSplitAttributesCalculator expandContainersAttrs
    }
    // Otherwise, use the default splitAttributes.
    return@setSplitAttributesCalculator defaultSplitAttributes
}

public static final @NonNull SplitAttributes.SplitType SPLIT_TYPE_HINGE

A split type in which the split ratio conforms to the position of a hinge or separating fold in the device display.

The split type works only if:

• The host task is not in multi-window mode (e.g., split-screen mode or picture-in-picture mode)
• The device has a hinge or separating fold reported by [androidx.window.layout.FoldingFeature.isSeparating]
• The hinge or separating fold orientation matches how the parent bounds are split:
  • The hinge or fold orientation is vertical, and the parent bounds are also split vertically (containers are side by side)
  • The hinge or fold orientation is horizontal, and the parent bounds are also split horizontally (containers are top and bottom)

Otherwise, this SplitType fallback to show the split with SPLIT_TYPE_EQUAL.

If the app wants to have another fallback SplitType if SPLIT_TYPE_HINGE cannot be applied. It is suggested to use SplitController.setSplitAttributesCalculator to customize the fallback SplitType.

The following sample shows how to fallback to SPLIT_TYPE_EXPAND if there's no hinge area in the parent window container bounds.

import androidx.window.embedding.SplitAttributes
import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_EXPAND
import androidx.window.embedding.SplitAttributes.SplitType.Companion.SPLIT_TYPE_HINGE
import androidx.window.embedding.SplitController
import androidx.window.layout.FoldingFeature

SplitController.getInstance(context).setSplitAttributesCalculator { params ->
    SplitAttributes.Builder()
        .setSplitType(
            if (
                params.parentWindowLayoutInfo.displayFeatures
                    .filterIsInstance<FoldingFeature>()
                    .isNotEmpty()
            ) {
                SPLIT_TYPE_HINGE
            } else {
                SPLIT_TYPE_EXPAND
            }
        )
        .build()
}

public boolean equals(Object other)

Determines whether this object is the same type of split as the compared object.

public int hashCode()

Returns a hash code for this split type.

public static final @NonNull SplitAttributes.SplitType ratio(
    @FloatRange(from = 0.0, to = 1.0, fromInclusive = false, toInclusive = false) float ratio
)

Creates a split type based on the proportion of the parent window occupied by the primary container of the split.

Values in the non-inclusive range (0.0, 1.0) define the size of the primary container relative to the size of the parent window:

• 0.5 — Primary container occupies half of the parent window; secondary container, the other half

• > 0.5 — Primary container occupies a larger proportion of the parent window than the secondary container

• < 0.5 — Primary container occupies a smaller proportion of the parent window than the secondary container

public @NonNull String toString()

A string representation of this split type.