# OnForwardCompletedFallback

Artifact: [androidx.navigationevent:navigationevent](https://developer.android.com/jetpack/androidx/releases/navigationevent) [View Source](https://cs.android.com/search?q=file:androidx/navigationevent/OnForwardCompletedFallback.kt+class:androidx.navigationevent.OnForwardCompletedFallback) Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/navigationevent#1.1.0)

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Common/AllAndroid/JVMJavaScript
- Cmn

  ```
  fun interface OnForwardCompletedFallback
  ```

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A listener that provides a final fallback action for unhandled `forwardCompleted` callbacks.

This is typically used to provide a default system behavior when no other part of the application consumes the forward navigation event.

## Summary

| ### Public functions |
|---|---|---|
| `https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html` | `https://developer.android.com/reference/kotlin/androidx/navigationevent/OnForwardCompletedFallback#onForwardCompletedFallback()()` Called when a `forwardCompleted` callback is dispatched but not handled by any `https://developer.android.com/reference/kotlin/androidx/navigationevent/NavigationEventHandler`. | Cmn |

## Public functions

### onForwardCompletedFallback

Cmn Added in [1.1.0](https://developer.android.com/jetpack/androidx/releases/navigationevent#1.1.0)

```
fun onForwardCompletedFallback(): Unit
```

Called when a `forwardCompleted` callback is dispatched but not handled by any `https://developer.android.com/reference/kotlin/androidx/navigationevent/NavigationEventHandler`.