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ViewTreeObserver.OnDrawListener
public
static
interface
ViewTreeObserver.OnDrawListener
| android.view.ViewTreeObserver.OnDrawListener
|
Interface definition for a callback to be invoked when the view tree is about to be drawn.
Summary
Public methods |
|---|
abstract
void
|
onDraw()
Callback method to be invoked when the view tree is about to be drawn.
|
Public methods
onDraw
public abstract void onDraw ()
Callback method to be invoked when the view tree is about to be drawn. At this point,
views cannot be modified in any way.
Unlike with OnPreDrawListener, this method cannot be used to cancel the
current drawing pass.
An OnDrawListener listener cannot be added or removed
from this method.
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 2025-02-10 UTC.
[null,null,["Last updated 2025-02-10 UTC."],[],[],null,["# ViewTreeObserver.OnDrawListener\n\nAdded in [API level 16](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\nViewTreeObserver.OnDrawListener\n===============================\n\n*** ** * ** ***\n\n[Kotlin](/reference/kotlin/android/view/ViewTreeObserver.OnDrawListener \"View this page in Kotlin\") \\|Java\n\n\n`\npublic\nstatic\n\n\ninterface\nViewTreeObserver.OnDrawListener\n`\n\n\n`\n\n\n`\n\n|----------------------------------------------|\n| android.view.ViewTreeObserver.OnDrawListener |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nInterface definition for a callback to be invoked when the view tree is about to be drawn.\n\nSummary\n-------\n\n| ### Public methods ||\n|------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` abstract void` | ` `[onDraw](/reference/android/view/ViewTreeObserver.OnDrawListener#onDraw())`() ` \u003cbr /\u003e Callback method to be invoked when the view tree is about to be drawn. |\n\nPublic methods\n--------------\n\n### onDraw\n\nAdded in [API level 16](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic abstract void onDraw ()\n```\n\n\u003cbr /\u003e\n\nCallback method to be invoked when the view tree is about to be drawn. At this point,\nviews cannot be modified in any way.\n\nUnlike with [OnPreDrawListener](/reference/android/view/ViewTreeObserver.OnPreDrawListener), this method cannot be used to cancel the\ncurrent drawing pass.\n\nAn [OnDrawListener](/reference/android/view/ViewTreeObserver.OnDrawListener) listener **cannot be added or removed**\nfrom this method.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n**See also:**\n\n- [View.onMeasure(int, int)](/reference/android/view/View#onMeasure(int,%20int))\n- [View.onLayout(boolean, int, int, int, int)](/reference/android/view/View#onLayout(boolean,%20int,%20int,%20int,%20int))\n- [View.onDraw(Canvas)](/reference/android/view/View#onDraw(android.graphics.Canvas))"]]
