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public interface OnChildSelectedListener

android.support.v17.leanback.widget.OnChildSelectedListener

此接口已弃用。
使用OnChildViewHolderSelectedListener

当ViewGroup的一个孩子被选中时接收通知的界面。

Public methods
`abstract void`	`onChildSelected(ViewGroup parent, View view, int position, long id)` 当此ViewGroup的子项被选中时，将调用回调方法。

void onChildSelected (ViewGroup parent, 
                View view, 
                int position, 
                long id)

当此ViewGroup的子项被选中时，将调用回调方法。

Parameters
`parent`	`ViewGroup`: The ViewGroup where the selection happened.
`view`	`View`: The view within the ViewGroup that is selected, or null if no view is selected.
`position`	`int`: The position of the view in the adapter, or NO_POSITION if no view is selected.
`id`	`long`: The id of the child that is selected, or NO_ID if no view is selected.