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Notification.Extender
public
static
interface
Notification.Extender
| android.app.Notification.Extender
|
Known indirect subclasses
|
Extender interface for use with Builder.extend. Extenders may be used to add
metadata or change options on a notification builder.
Summary
Public methods
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Last updated 2025-08-20 UTC.
[null,null,["Last updated 2025-08-20 UTC."],[],[],null,["# Notification.Extender\n\nAdded in [API level 20](/guide/topics/manifest/uses-sdk-element#ApiLevels) \nSummary: [Methods](#pubmethods) \n\nNotification.Extender\n=====================\n\n*** ** * ** ***\n\n[Kotlin](/reference/kotlin/android/app/Notification.Extender \"View this page in Kotlin\") \\|Java\n\n\n`\npublic\nstatic\n\n\ninterface\nNotification.Extender\n`\n\n\n`\n\n\n`\n\n|-----------------------------------|\n| android.app.Notification.Extender |\n\n|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| Known indirect subclasses [Notification.CarExtender](/reference/android/app/Notification.CarExtender), [Notification.TvExtender](/reference/android/app/Notification.TvExtender), [Notification.WearableExtender](/reference/android/app/Notification.WearableExtender) |---------------------------------------------------------------------------------------|---------------------------------------------------------------| | [Notification.CarExtender](/reference/android/app/Notification.CarExtender) | Helper class to add Android Auto extensions to notifications. | | [Notification.TvExtender](/reference/android/app/Notification.TvExtender) | Helper class to add Android TV extensions to notifications. | | [Notification.WearableExtender](/reference/android/app/Notification.WearableExtender) | Helper class to add wearable extensions to notifications. | |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nExtender interface for use with [Builder.extend](/reference/android/app/Notification.Builder#extend(android.app.Notification.Extender)). Extenders may be used to add\nmetadata or change options on a notification builder.\n\nSummary\n-------\n\n| ### Public methods ||\n|---------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` abstract `[Notification.Builder](/reference/android/app/Notification.Builder) | ` `[extend](/reference/android/app/Notification.Extender#extend(android.app.Notification.Builder))`(`[Notification.Builder](/reference/android/app/Notification.Builder)` builder) ` Apply this extender to a notification builder. |\n\nPublic methods\n--------------\n\n### extend\n\nAdded in [API level 20](/guide/topics/manifest/uses-sdk-element#ApiLevels) \n\n```\npublic abstract Notification.Builder extend (Notification.Builder builder)\n```\n\nApply this extender to a notification builder.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|-----------|-----------------------------------------------------------|\n| `builder` | `Notification.Builder`: the builder to be modified \u003cbr /\u003e |\n\n| Returns ||\n|---------------------------------------------------------------------|--------------------------------------|\n| [Notification.Builder](/reference/android/app/Notification.Builder) | the build object for chaining \u003cbr /\u003e |"]]
