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OnDrawListener
interface OnDrawListener
Interface definition for a callback to be invoked when the view tree is about to be drawn.
Summary
| Public methods |
| abstract Unit |
Callback method to be invoked when the view tree is about to be drawn.
|
Public methods
onDraw
abstract fun onDraw(): Unit
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.
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Last updated 2025-02-10 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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# ViewTreeObserver.OnDrawListener\n\nAdded in [API level 16](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)\n\nOnDrawListener\n==============\n\n*** ** * ** ***\n\nKotlin \\|[Java](/reference/android/view/ViewTreeObserver.OnDrawListener \"View this page in Java\") \n\n```\ninterface OnDrawListener\n```\n\n|---------------------------------------------------|\n| [android.view.ViewTreeObserver.OnDrawListener](#) |\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 [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onDraw](#onDraw())`()` 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](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) \n\n```\nabstract fun onDraw(): Unit\n```\n\nCallback method to be invoked when the view tree is about to be drawn. At this point, views cannot be modified in any way.\n\nUnlike with [OnPreDrawListener](/reference/kotlin/android/view/ViewTreeObserver.OnPreDrawListener), this method cannot be used to cancel the current drawing pass.\n\nAn [OnDrawListener](#) listener **cannot be added or removed** from this method. \n**See Also**\n\n- [android.view.View#onMeasure](/reference/kotlin/android/view/View#onMeasure(kotlin.Int,%20kotlin.Int))\n- [android.view.View#onLayout](/reference/kotlin/android/view/View#onLayout(kotlin.Boolean,%20kotlin.Int,%20kotlin.Int,%20kotlin.Int,%20kotlin.Int))\n- [android.view.View#onDraw](/reference/kotlin/android/view/View#onDraw(android.graphics.Canvas))"]]
