# ApplicationLifecycleCallback

# ApplicationLifecycleCallback

Artifact:[androidx.test:monitor](https://developer.android.com/jetpack/androidx/releases/test)  
[View Source](https://cs.android.com/search?q=file:androidx/test/runner/lifecycle/ApplicationLifecycleCallback.java+class:androidx.test.runner.lifecycle.ApplicationLifecycleCallback)

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Kotlin\|[Java](https://developer.android.com/reference/androidx/test/runner/lifecycle/ApplicationLifecycleCallback "View this page in Java")

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```
interface ApplicationLifecycleCallback
```

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Callback for monitoring application lifecycle events.

## Summary

|                             ### Public functions                              |
|-------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html) | [onApplicationLifecycleChanged](https://developer.android.com/reference/kotlin/androidx/test/runner/lifecycle/ApplicationLifecycleCallback#onApplicationLifecycleChanged(android.app.Application,androidx.test.runner.lifecycle.ApplicationStage))`(app: `[Application](https://developer.android.com/reference/android/app/Application.html)`!, stage: `[ApplicationStage](https://developer.android.com/reference/kotlin/androidx/test/runner/lifecycle/ApplicationStage)`!)` Called on after an application has processed its lifecycle change event (for example onCreate) These callbacks may occur on main thread so implementers should limit the amount of processing performed |

## Public functions

### onApplicationLifecycleChanged

```
fun onApplicationLifecycleChanged(app: Application!, stage: ApplicationStage!): Unit
```

Called on after an application has processed its lifecycle change event (for example onCreate) These callbacks may occur on main thread so implementers should limit the amount of processing performed  

|                                                           Parameters                                                           |
|--------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------|
| `app: `[Application](https://developer.android.com/reference/android/app/Application.html)`!`                                  | the[Application](https://developer.android.com/reference/android/app/Application.html) |
| `stage: `[ApplicationStage](https://developer.android.com/reference/kotlin/androidx/test/runner/lifecycle/ApplicationStage)`!` | its current stage.                                                                     |