FocusDelegate

Kotlin |Java

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

clearFocus

abstract fun clearFocus(): Unit

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

focusItem

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

If environment supports focus, focus item.

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.