Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels) Summary: [Methods](https://developer.android.com/reference/android/view/ViewTreeObserver.OnGlobalFocusChangeListener#pubmethods)

# ViewTreeObserver.OnGlobalFocusChangeListener

*** ** * ** ***


`
public
static


interface
ViewTreeObserver.OnGlobalFocusChangeListener
`


`


`

|---|
| android.view.ViewTreeObserver.OnGlobalFocusChangeListener |

|---|
| Known indirect subclasses [WebView](https://developer.android.com/reference/android/webkit/WebView) |---|---| | [WebView](https://developer.android.com/reference/android/webkit/WebView) | A View that displays web pages. | |

<br />

*** ** * ** ***

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

## Summary

| ### Public methods ||
|---|---|
| ` abstract void` | ` https://developer.android.com/reference/android/view/ViewTreeObserver.OnGlobalFocusChangeListener#onGlobalFocusChanged(android.view.View,%20android.view.View)(https://developer.android.com/reference/android/view/View oldFocus, https://developer.android.com/reference/android/view/View newFocus) ` Callback method to be invoked when the focus changes in the view tree. |

## Public methods

### onGlobalFocusChanged

Added in [API level 1](https://developer.android.com/guide/topics/manifest/uses-sdk-element#ApiLevels)

```
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.

<br />

| Parameters ||
|---|---|
| `oldFocus` | `View`: The previously focused view, if any. <br /> |
| `newFocus` | `View`: The newly focused View, if any. <br /> |