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WindowInspector
class WindowInspector
Provides access to window inspection information.
Summary
| Public methods |
| static Unit |
Adds a listener that is notified whenever the value of getGlobalWindowViews() changes.
|
| static MutableList<View!> |
|
| static Unit |
Removes a listener from getting notifications of global window views changes.
|
Public methods
addGlobalWindowViewsListener
static fun addGlobalWindowViewsListener(
executor: Executor,
consumer: Consumer<MutableList<View!>!>
): Unit
Adds a listener that is notified whenever the value of getGlobalWindowViews() changes. The current value is provided immediately using the provided Executor. The value is initially relayed using the main thread and then posted to the Executor. Using a direct Executor and doing heavy calculations can cause performance issues. If this Consumer is already registered, then this method is a no op.
getGlobalWindowViews
static fun getGlobalWindowViews(): MutableList<View!>
| Return |
MutableList<View!> |
the list of all window views attached to the current process This value cannot be null. |
removeGlobalWindowViewsListener
static fun removeGlobalWindowViewsListener(consumer: Consumer<MutableList<View!>!>): Unit
Removes a listener from getting notifications of global window views changes. If the Consumer is not registered this method is a no op.
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-08-20 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-20 UTC."],[],[],null,["# WindowInspector\n\nAdded in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nWindowInspector\n===============\n\n*** ** * ** ***\n\nKotlin \\|[Java](/reference/android/view/inspector/WindowInspector \"View this page in Java\") \n\n```\nclass WindowInspector\n```\n\n|---|---------------------------------------------|\n| [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html) ||\n| ↳ | [android.view.inspector.WindowInspector](#) |\n\nProvides access to window inspection information.\n\nSummary\n-------\n\n| Public methods ||\n|------------------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| static [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [addGlobalWindowViewsListener](#addGlobalWindowViewsListener(java.util.concurrent.Executor,%20java.util.function.Consumer))`(`executor:` `[Executor](../../../java/util/concurrent/Executor.html#)`, `consumer:` `[Consumer](../../../java/util/function/Consumer.html#)\u003c[MutableList](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-mutable-list/index.html)\u003c[View](../View.html#)!\u003e!\u003e`)` Adds a listener that is notified whenever the value of [getGlobalWindowViews()](#getGlobalWindowViews()) changes. |\n| static [MutableList](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-mutable-list/index.html)\\\u003c[View](../View.html#)!\\\u003e | [getGlobalWindowViews](#getGlobalWindowViews())`()` \u003cbr /\u003e |\n| static [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [removeGlobalWindowViewsListener](#removeGlobalWindowViewsListener(java.util.function.Consumer))`(`consumer:` `[Consumer](../../../java/util/function/Consumer.html#)\u003c[MutableList](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-mutable-list/index.html)\u003c[View](../View.html#)!\u003e!\u003e`)` Removes a listener from getting notifications of global window views changes. |\n\nPublic methods\n--------------\n\n### addGlobalWindowViewsListener\n\nAdded in [API level Baklava](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nstatic fun addGlobalWindowViewsListener(\n executor: Executor, \n consumer: Consumer\u003cMutableList\u003cView!\u003e!\u003e\n): Unit\n```\n\nAdds a listener that is notified whenever the value of [getGlobalWindowViews()](#getGlobalWindowViews()) changes. The current value is provided immediately using the provided [Executor](../../../java/util/concurrent/Executor.html#). The value is initially relayed using the main thread and then posted to the [Executor](../../../java/util/concurrent/Executor.html#). Using a direct [Executor](../../../java/util/concurrent/Executor.html#) and doing heavy calculations can cause performance issues. If this [Consumer](../../../java/util/function/Consumer.html#) is already registered, then this method is a no op.\n\n| Parameters ||\n|------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `executor` | [Executor](../../../java/util/concurrent/Executor.html#): This value cannot be `null`. |\n| `consumer` | [Consumer](../../../java/util/function/Consumer.html#)\\\u003c[MutableList](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-mutable-list/index.html)\\\u003c[View](../View.html#)!\\\u003e!\\\u003e: This value cannot be `null`. |\n\n**See Also**\n\n- \u003c#getGlobalWindowViews()\u003e \n\n### getGlobalWindowViews\n\nAdded in [API level 29](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nstatic fun getGlobalWindowViews(): MutableList\u003cView!\u003e\n```\n\n| Return ||\n|---------------------------------------------------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------|\n| [MutableList](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-mutable-list/index.html)\u003c[View](../View.html#)!\u003e | the list of all window views attached to the current process This value cannot be `null`. |\n\n### removeGlobalWindowViewsListener\n\nAdded in [API level Baklava](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nstatic fun removeGlobalWindowViewsListener(consumer: Consumer\u003cMutableList\u003cView!\u003e!\u003e): Unit\n```\n\nRemoves a listener from getting notifications of global window views changes. If the [Consumer](../../../java/util/function/Consumer.html#) is not registered this method is a no op.\n\n| Parameters ||\n|------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| `consumer` | [Consumer](../../../java/util/function/Consumer.html#)\\\u003c[MutableList](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-mutable-list/index.html)\\\u003c[View](../View.html#)!\\\u003e!\\\u003e: This value cannot be `null`. |\n\n**See Also**\n\n- [#addGlobalWindowViewsListener(Executor, Consumer)](#addGlobalWindowViewsListener(java.util.concurrent.Executor,%20java.util.function.Consumer))"]]
