SortedListAdapterCallback

Added in 1.0.0

Kotlin |Java

public abstract class SortedListAdapterCallback<T2> extends SortedList.Callback

java.lang.Object
↳	androidx.recyclerview.widget.SortedList.Callback
	↳	androidx.recyclerview.widget.SortedListAdapterCallback

Summary

Public constructors
`SortedListAdapterCallback(RecyclerView.Adapter<Object> adapter)` Creates a `SortedList.Callback` that will forward data change events to the provided Adapter.

Public methods
`void`	`onChanged(int position, int count)` Called by the SortedList when the item at the given position is updated.
`void`	`onChanged(int position, int count, Object payload)`
`void`	`onInserted(int position, int count)` Called when count} number of items are inserted at the given position.
`void`	`onMoved(int fromPosition, int toPosition)` Called when an item changes its position in the list.
`void`	`onRemoved(int position, int count)` Called when count} number of items are removed from the given position.

`abstract int`	`compare(T p, T p1)`
`static Comparator<T>`	`<T, U extends Comparable<U>> comparing(Function<T, U> keyExtractor)`
`static Comparator<T>`	`<T> comparingDouble(ToDoubleFunction<T> keyExtractor)`
`static Comparator<T>`	`<T> comparingInt(ToIntFunction<T> keyExtractor)`
`static Comparator<T>`	`<T> comparingLong(ToLongFunction<T> keyExtractor)`
`static Comparator<T>`	`<T extends Comparable<T>> naturalOrder()`
`static Comparator<T>`	`<T> nullsFirst(Comparator<T> comparator)`
`static Comparator<T>`	`<T> nullsLast(Comparator<T> comparator)`
`static Comparator<T>`	`<T extends Comparable<T>> reverseOrder()`
`Comparator<T>`	`reversed()`
`Comparator<T>`	`thenComparing(Comparator<T> other)`
`Comparator<T>`	`thenComparingDouble(ToDoubleFunction<T> keyExtractor)`
`Comparator<T>`	`thenComparingInt(ToIntFunction<T> keyExtractor)`
`Comparator<T>`	`thenComparingLong(ToLongFunction<T> keyExtractor)`

abstract void

onChanged(int position, int count, @Nullable Object payload)

Called when count number of items are updated at the given position.

`abstract boolean`	`areContentsTheSame(T2 oldItem, T2 newItem)` Called by the SortedList when it wants to check whether two items have the same data or not.
`abstract boolean`	`areItemsTheSame(T2 item1, T2 item2)` Called by the SortedList to decide whether two objects represent the same Item or not.
`abstract int`	`compare(T2 o1, T2 o2)` Similar to `compare`, should compare two and return how they should be ordered.
`@Nullable Object`	`getChangePayload(T2 item1, T2 item2)` When `areItemsTheSame` returns `true` for two items and `areContentsTheSame` returns false for them, `Callback` calls this method to get a payload about the change.

Added in 1.3.0

public SortedListAdapterCallback(RecyclerView.Adapter<Object> adapter)

Creates a SortedList.Callback that will forward data change events to the provided Adapter.

Parameters
`RecyclerView.Adapter<Object> adapter`	The Adapter instance which should receive events from the SortedList.

Added in 1.4.0

public void onChanged(int position, int count)

Called by the SortedList when the item at the given position is updated.

public void onChanged(int position, int count, Object payload)

Added in 1.4.0

public void onInserted(int position, int count)

Called when count} number of items are inserted at the given position.

Added in 1.4.0

public void onMoved(int fromPosition, int toPosition)

Called when an item changes its position in the list.

Added in 1.4.0

public void onRemoved(int position, int count)

Called when count} number of items are removed from the given position.