ViewHolder

Kotlin |Java

open class ViewHolder : RowPresenter.ViewHolder

kotlin.Any
↳	androidx.leanback.widget.Presenter.ViewHolder
	↳	androidx.leanback.widget.RowPresenter.ViewHolder
		↳	androidx.leanback.widget.ListRowPresenter.ViewHolder

ViewHolder for the ListRowPresenter.

Summary

Public constructors
<init>(rootView: View!, gridView: HorizontalGridView!, p: ListRowPresenter!)

Public methods
ItemBridgeAdapter!	getBridgeAdapter() Gets ItemBridgeAdapter that creates the list of items.
HorizontalGridView!	getGridView() Gets HorizontalGridView that shows a list of items.
open Presenter.ViewHolder!	getItemViewHolder(position: Int) Gets ViewHolder at a position in adapter.
ListRowPresenter!	getListRowPresenter() Gets ListRowPresenter that creates this ViewHolder.
open Any!	getSelectedItem()
open Presenter.ViewHolder!	getSelectedItemViewHolder()
open Int	getSelectedPosition() Gets selected item position in adapter.

Inherited functions
From class ViewHolder Any! getFacet(facetClass: Class<*>!) Unit setFacet(facetClass: Class<*>!, facetImpl: Any!) Sets dynamic implemented facet in addition to basic ViewHolder functions.
From class ViewHolder RowHeaderPresenter.ViewHolder! getHeaderViewHolder() Returns the view holder for the Row header for this Row. BaseOnItemViewClickedListener<Any!>! getOnItemViewClickedListener() Returns the listener for item click event. BaseOnItemViewSelectedListener<Any!>! getOnItemViewSelectedListener() Returns the listener for item or row selection. OnKeyListener! getOnKeyListener() Returns the key listener. Row! getRow() Returns the row bound to this ViewHolder. Returns null if the row is not an instance of Row. Any! getRowObject() Returns the Row object bound to this ViewHolder. Float getSelectLevel() Returns the current selection level of the Row. Boolean isExpanded() Returns whether the Row is in its expanded state. Boolean isSelected() Returns whether the Row is selected. Unit setActivated(activated: Boolean) Sets the row view's activated status. The status will be applied to children through syncActivatedStatus(View). Application should only call this function when RowPresenter#getSyncActivatePolicy() is RowPresenter#SYNC_ACTIVATED_CUSTOM; otherwise the value will be overwritten when expanded or selected status changes. Unit setOnItemViewClickedListener(listener: BaseOnItemViewClickedListener<Any!>!) Sets the listener for item click event. RowPresenter does nothing but subclass of RowPresenter may fire item click event if it has the concept of item. OnItemViewClickedListener will override View.OnClickListener that item presenter sets during Presenter#onCreateViewHolder(ViewGroup). Unit setOnItemViewSelectedListener(listener: BaseOnItemViewSelectedListener<Any!>!) Sets the listener for item or row selection. RowPresenter fires row selection event with null item. A subclass of RowPresenter e.g. ListRowPresenter may fire a selection event with selected item. Unit setOnKeyListener(keyListener: OnKeyListener!) Sets a key listener. Unit syncActivatedStatus(view: View!) Synchronizes the activated status of view to the last value passed through RowPresenter.ViewHolder#setActivated(boolean). No operation if RowPresenter.ViewHolder#setActivated(boolean) is never called. Normally application does not need to call this method, ListRowPresenter automatically calls this method when a child is attached to list row. However if application writes its own custom RowPresenter, it should call this method when attaches a child to the row view.

Inherited properties
From class ViewHolder ColorOverlayDimmer! mColorDimmer
From class ViewHolder View! view

Public constructors

<init>

ViewHolder(
    rootView: View!, 
    gridView: HorizontalGridView!, 
    p: ListRowPresenter!)

Public methods

getBridgeAdapter

fun getBridgeAdapter(): ItemBridgeAdapter!

Gets ItemBridgeAdapter that creates the list of items.

Return
ItemBridgeAdapter!	ItemBridgeAdapter that creates the list of items.

getGridView

fun getGridView(): HorizontalGridView!

Gets HorizontalGridView that shows a list of items.

Return
HorizontalGridView!	HorizontalGridView that shows a list of items.

getItemViewHolder

open fun getItemViewHolder(position: Int): Presenter.ViewHolder!

Gets ViewHolder at a position in adapter. Returns null if the item does not exist or the item is not bound to a view.

Parameters
position	Int: Position of the item in adapter.

Return
Presenter.ViewHolder!	ViewHolder bounds to the item.

getListRowPresenter

fun getListRowPresenter(): ListRowPresenter!

Gets ListRowPresenter that creates this ViewHolder.

Return
ListRowPresenter!	ListRowPresenter that creates this ViewHolder.

getSelectedItem

open fun getSelectedItem(): Any!

getSelectedItemViewHolder

open fun getSelectedItemViewHolder(): Presenter.ViewHolder!

getSelectedPosition

open fun getSelectedPosition(): Int

Gets selected item position in adapter.

Return
Int	Selected item position in adapter.