SparseArrayObjectAdapter

Kotlin |Java

open class SparseArrayObjectAdapter : ObjectAdapter

kotlin.Any
↳	androidx.leanback.widget.ObjectAdapter
	↳	androidx.leanback.widget.SparseArrayObjectAdapter

An ObjectAdapter implemented with a android.util.SparseArray. This class maintains an array of objects where each object is associated with an integer key which determines its order relative to other objects.

Summary

Inherited constants

From class ObjectAdapter

Int

NO_ID

Indicates that an id has not been set.

Public constructors
`<init>(presenterSelector: PresenterSelector!)` Constructs an adapter with the given `PresenterSelector`.
`<init>(presenter: Presenter!)` Constructs an adapter with the given `Presenter`.
`<init>()` Constructs an adapter.

Public methods
open Unit	`clear(key: Int)` Clears the given key and associated item from the adapter.
open Unit	`clear()` Removes all items from this adapter, leaving it empty.
open Any!	`get(position: Int)`
open Int	`indexOf(item: Any!)` Returns the index for the given item in the adapter.
open Int	`indexOf(key: Int)` Returns the index for the given key in the adapter.
open Boolean	`isImmediateNotifySupported()`
open Any!	`lookup(key: Int)` Returns the object for the given key, or null if no mapping for that key exists.
open Unit	`notifyArrayItemRangeChanged(positionStart: Int, itemCount: Int)` Notify that the content of a range of items changed.
open Unit	`set(key: Int, item: Any!)` Sets the item for the given key.
open Int	`size()`

Inherited functions

From class ObjectAdapter

`Long`	`getId(position: Int)` Returns the id for the given position.
`Presenter!`	`getPresenter(item: Any!)` Returns the `Presenter` for the given item from the adapter.
`PresenterSelector!`	`getPresenterSelector()` Returns the presenter selector for this ObjectAdapter.
`Boolean`	`hasStableIds()` Returns true if the item ids are stable across changes to the underlying data. When this is true, clients of the ObjectAdapter can use `getId(int)` to correlate Objects across changes.
`Unit`	`notifyChanged()` Notifies UI that the underlying data has changed.
`Unit`	`notifyItemMoved(fromPosition: Int, toPosition: Int)` Notifies UI that item at fromPosition has been moved to toPosition.
`Unit`	`notifyItemRangeChanged(positionStart: Int, itemCount: Int)` Notifies UI that some items has changed.
`Unit`	`notifyItemRangeChanged(positionStart: Int, itemCount: Int, payload: Any!)` Notifies UI that some items has changed.
`Unit`	`notifyItemRangeInserted(positionStart: Int, itemCount: Int)` Notifies UI that new items has been inserted.
`Unit`	`notifyItemRangeRemoved(positionStart: Int, itemCount: Int)` Notifies UI that some items that has been removed.