FocusDelegate

abstract class FocusDelegate<K : Any!>

kotlin.Any
↳	androidx.recyclerview.selection.FocusDelegate

Override methods in this class to provide application specific behaviors related to focusing item.

Summary

Public constructors
<init>() Override methods in this class to provide application specific behaviors related to focusing item.

Public methods
abstract Unit	focusItem(@NonNull item: ItemDetailsLookup.ItemDetails<K>) If environment supports focus, focus item.
abstract Unit	clearFocus() If the environment supports focus and something is focused, unfocus it.
abstract Int	getFocusedPosition()
abstract Boolean	hasFocusedItem()

Public constructors

<init>

FocusDelegate()

Override methods in this class to provide application specific behaviors related to focusing item.

Public methods

focusItem

abstract fun focusItem(@NonNull item: ItemDetailsLookup.ItemDetails<K>): Unit

If environment supports focus, focus item.

clearFocus

abstract fun clearFocus(): Unit

If the environment supports focus and something is focused, unfocus it.

getFocusedPosition

abstract fun getFocusedPosition(): Int

Return
Int: the position of the currently focused item, if any.

hasFocusedItem

abstract fun hasFocusedItem(): Boolean

Return
Boolean: true if there is a focused item.