# AttachedSurfaceControl.OnBufferTransformHintChangedListener

Added in[API level 32](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)

# OnBufferTransformHintChangedListener

*** ** * ** ***

Kotlin\|[Java](https://developer.android.com/reference/android/view/AttachedSurfaceControl.OnBufferTransformHintChangedListener "View this page in Java")  

```
interface OnBufferTransformHintChangedListener
```

|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [android.view.AttachedSurfaceControl.OnBufferTransformHintChangedListener](https://developer.android.com/reference/kotlin/android/view/AttachedSurfaceControl.OnBufferTransformHintChangedListener#) |

Buffer transform hint change listener.

## Summary

|                                                                                                                                                                                    Public methods                                                                                                                                                                                     ||
|--------------------------------------------------------------------------------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| abstract[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onBufferTransformHintChanged](https://developer.android.com/reference/kotlin/android/view/AttachedSurfaceControl.OnBufferTransformHintChangedListener#onBufferTransformHintChanged(kotlin.Int))`(`hint:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` <br /> |

## Public methods

### onBufferTransformHintChanged

Added in[API level 32](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
abstract fun onBufferTransformHintChanged(hint: Int): Unit
```

|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 Parameters                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 ||
|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `hint` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):new surface transform hint Value is[android.view.SurfaceControl#BUFFER_TRANSFORM_IDENTITY](https://developer.android.com/reference/kotlin/android/view/SurfaceControl#BUFFER_TRANSFORM_IDENTITY:kotlin.Int),[android.view.SurfaceControl#BUFFER_TRANSFORM_MIRROR_HORIZONTAL](https://developer.android.com/reference/kotlin/android/view/SurfaceControl#BUFFER_TRANSFORM_MIRROR_HORIZONTAL:kotlin.Int),[android.view.SurfaceControl#BUFFER_TRANSFORM_MIRROR_VERTICAL](https://developer.android.com/reference/kotlin/android/view/SurfaceControl#BUFFER_TRANSFORM_MIRROR_VERTICAL:kotlin.Int),[android.view.SurfaceControl#BUFFER_TRANSFORM_ROTATE_90](https://developer.android.com/reference/kotlin/android/view/SurfaceControl#BUFFER_TRANSFORM_ROTATE_90:kotlin.Int),[android.view.SurfaceControl#BUFFER_TRANSFORM_ROTATE_180](https://developer.android.com/reference/kotlin/android/view/SurfaceControl#BUFFER_TRANSFORM_ROTATE_180:kotlin.Int),[android.view.SurfaceControl#BUFFER_TRANSFORM_ROTATE_270](https://developer.android.com/reference/kotlin/android/view/SurfaceControl#BUFFER_TRANSFORM_ROTATE_270:kotlin.Int), android.view.SurfaceControl.BUFFER_TRANSFORM_MIRROR_HORIZONTAL_ROTATE_90, or android.view.SurfaceControl.BUFFER_TRANSFORM_MIRROR_VERTICAL_ROTATE_90 |

**See Also**

- [#getBufferTransformHint](https://developer.android.com/reference/kotlin/android/view/AttachedSurfaceControl#getBufferTransformHint())