lightbulb_outline Help shape the future of the Google Play Console, Android Studio, and Firebase. Start survey
added in API level 1

ViewTreeObserver.OnGlobalFocusChangeListener

public static interface ViewTreeObserver.OnGlobalFocusChangeListener

android.view.ViewTreeObserver.OnGlobalFocusChangeListener


Interface definition for a callback to be invoked when the focus state within the view tree changes.

Summary

Public methods

abstract void onGlobalFocusChanged(View oldFocus, View newFocus)

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

Public methods

onGlobalFocusChanged

added in API level 1
public abstract void onGlobalFocusChanged (View oldFocus, 
                View newFocus)

Callback method to be invoked when the focus changes in the view tree. When the view tree transitions from touch mode to non-touch mode, oldFocus is null. When the view tree transitions from non-touch mode to touch mode, newFocus is null. When focus changes in non-touch mode (without transition from or to touch mode) either oldFocus or newFocus can be null.

Parameters
oldFocus View: The previously focused view, if any.

newFocus View: The newly focused View, if any.