Android APIs
Added in API level 18
public static interface

ViewTreeObserver.OnWindowFocusChangeListener

android.view.ViewTreeObserver.OnWindowFocusChangeListener

Class Overview

Interface definition for a callback to be invoked when the view hierarchy's window focus state changes.

Summary

Public Methods
abstract void onWindowFocusChanged(boolean hasFocus)
Callback method to be invoked when the window focus changes in the view tree.

Public Methods

public abstract void onWindowFocusChanged (boolean hasFocus)

Added in API level 18

Callback method to be invoked when the window focus changes in the view tree.

Parameters
hasFocus boolean: Set to true if the window is gaining focus, false if it is losing focus.