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OnWindowVisibilityChangeListener
interface OnWindowVisibilityChangeListener
Interface definition for a callback to be invoked when the view hierarchy's window visibility changes.
Summary
| Public methods |
| abstract Unit |
Callback method to be invoked when the window visibility changes in the view tree.
|
Public methods
onWindowVisibilityChanged
abstract fun onWindowVisibilityChanged(visibility: Int): Unit
Callback method to be invoked when the window visibility changes in the view tree.
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Last updated 2025-02-10 UTC.
[null,null,["Last updated 2025-02-10 UTC."],[],[],null,["# ViewTreeObserver.OnWindowVisibilityChangeListener\n\nAdded in [API level 34](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nOnWindowVisibilityChangeListener\n================================\n\n*** ** * ** ***\n\nKotlin \\|[Java](/reference/android/view/ViewTreeObserver.OnWindowVisibilityChangeListener \"View this page in Java\") \n\n```\ninterface OnWindowVisibilityChangeListener\n```\n\n|---------------------------------------------------------------------|\n| [android.view.ViewTreeObserver.OnWindowVisibilityChangeListener](#) |\n\nInterface definition for a callback to be invoked when the view hierarchy's window visibility changes.\n\nSummary\n-------\n\n| Public methods ||\n|---------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| abstract [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onWindowVisibilityChanged](#onWindowVisibilityChanged(kotlin.Int))`(`visibility:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Callback method to be invoked when the window visibility changes in the view tree. |\n\nPublic methods\n--------------\n\n### onWindowVisibilityChanged\n\nAdded in [API level 34](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nabstract fun onWindowVisibilityChanged(visibility: Int): Unit\n```\n\nCallback method to be invoked when the window visibility changes in the view tree.\n\n| Parameters ||\n|--------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `visibility` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html): The new visibility of the window. Value is [android.view.View#VISIBLE](/reference/kotlin/android/view/View#VISIBLE:kotlin.Int), [android.view.View#INVISIBLE](/reference/kotlin/android/view/View#INVISIBLE:kotlin.Int), or [android.view.View#GONE](/reference/kotlin/android/view/View#GONE:kotlin.Int) |"]]
