# FragmentStateAdapter.FragmentTransactionCallback.OnPostEventListener

# FragmentStateAdapter.FragmentTransactionCallback.OnPostEventListener

Artifact:[androidx.viewpager2:viewpager2](https://developer.android.com/jetpack/androidx/releases/viewpager2)  
[View Source](https://cs.android.com/search?q=file:androidx/viewpager2/adapter/FragmentStateAdapter.java+class:androidx.viewpager2.adapter.FragmentStateAdapter.FragmentTransactionCallback.OnPostEventListener)  
Added in[1.1.0](https://developer.android.com/jetpack/androidx/releases/viewpager2#1.1.0)

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Kotlin\|[Java](https://developer.android.com/reference/androidx/viewpager2/adapter/FragmentStateAdapter.FragmentTransactionCallback.OnPostEventListener "View this page in Java")

<br />

```
interface FragmentStateAdapter.FragmentTransactionCallback.OnPostEventListener
```

<br />

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Callback returned by[onFragmentPreAdded](https://developer.android.com/reference/kotlin/androidx/viewpager2/adapter/FragmentStateAdapter.FragmentTransactionCallback#onFragmentPreAdded(androidx.fragment.app.Fragment)),[onFragmentPreRemoved](https://developer.android.com/reference/kotlin/androidx/viewpager2/adapter/FragmentStateAdapter.FragmentTransactionCallback#onFragmentPreRemoved(androidx.fragment.app.Fragment)),[onFragmentMaxLifecyclePreUpdated](https://developer.android.com/reference/kotlin/androidx/viewpager2/adapter/FragmentStateAdapter.FragmentTransactionCallback#onFragmentMaxLifecyclePreUpdated(androidx.fragment.app.Fragment,androidx.lifecycle.Lifecycle.State))called after the operation ends.

## Summary

|                             ### Public functions                              |
|-------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [Unit](https://kotlinlang.org/api/core/kotlin-stdlib/kotlin/-unit/index.html) | [onPost](https://developer.android.com/reference/kotlin/androidx/viewpager2/adapter/FragmentStateAdapter.FragmentTransactionCallback.OnPostEventListener#onPost())`()` Called after the operation is ends. |

## Public functions

### onPost

Added in[1.1.0](https://developer.android.com/jetpack/androidx/releases/viewpager2#1.1.0)  

```
fun onPost(): Unit
```

Called after the operation is ends.