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OnItemViewSelectedListener.javaAPI DocAndroid 5.1 API2240Thu Mar 12 22:22:56 GMT 2015android.support.v17.leanback.widget

OnItemViewSelectedListener

public interface OnItemViewSelectedListener
Interface for receiving notification when a row or item becomes selected.

Fields Summary
Constructors Summary
Methods Summary
public voidonItemSelected(Presenter.ViewHolder itemViewHolder, java.lang.Object item, RowPresenter.ViewHolder rowViewHolder, Row row)
Called when the a row or a new item becomes selected. The concept of current selection is different than focus. Row or item can be selected even they don't have focus. Having the concept of selection will allow developer to switch background to selected item or selected row when user selects rows outside row UI (e.g. headers left of rows).

For a none {@link ListRow} case, parameter item is always null. Event is fired when selection changes between rows, regardless if row view has focus or not.

For a {@link ListRow} case, parameter item can be null if the list row is empty.

In the case of a grid, the row parameter is always null.

  • Row has focus: event is fired when focus changes between child of the row.
  • None of the row has focus: the event is fired with the current selected row and last focused item in the row.
  • param
    itemViewHolder The view holder of item that is currently selected.
    param
    item The item that is currently selected.
    param
    rowViewHolder The view holder of row that is currently selected.
    param
    row The row that is currently selected.