added in API level 18

ViewTreeObserver.OnWindowFocusChangeListener

public static interface ViewTreeObserver.OnWindowFocusChangeListener

android.view.ViewTreeObserver.OnWindowFocusChangeListener


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

onWindowFocusChanged

added in API level 18
void onWindowFocusChanged (boolean hasFocus)

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.