ListUpdateCallback

Added in 1.0.0

Kotlin |Java

public interface ListUpdateCallback

Known direct subclasses

`AdapterListUpdateCallback`	ListUpdateCallback that dispatches update events to the given adapter.
`BatchingListUpdateCallback`	Wraps a `ListUpdateCallback` callback and batches operations that can be merged.
`SortedList.Callback`	The class that controls the behavior of the `SortedList`.

Known indirect subclasses

`SortedList.BatchedCallback`	A callback implementation that can batch notify events dispatched by the SortedList.
`SortedListAdapterCallback`	A `SortedList.Callback` implementation that can bind a `SortedList` to a `RecyclerView.Adapter`.

An interface that can receive Update operations that are applied to a list.

This class can be used together with DiffUtil to detect changes between two lists.

Summary

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

Added in 1.0.0

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

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

Parameters
`int position`	The position of the item which has been updated.
`int count`	The number of items which has changed.
`@Nullable Object payload`	The payload for the changed items.

Added in 1.0.0

abstract void onInserted(int position, int count)

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

Parameters
`int position`	The position of the new item.
`int count`	The number of items that have been added.

Added in 1.0.0

abstract void onMoved(int fromPosition, int toPosition)

Called when an item changes its position in the list.

Parameters
`int fromPosition`	The previous position of the item before the move.
`int toPosition`	The new position of the item.

Added in 1.0.0

abstract void onRemoved(int position, int count)

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

Parameters
`int position`	The position of the item which has been removed.
`int count`	The number of items which have been removed.