# VirtualDisplayConfig.BrightnessListener

Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)

# BrightnessListener

*** ** * ** ***

Kotlin\|[Java](https://developer.android.com/reference/android/hardware/display/VirtualDisplayConfig.BrightnessListener "View this page in Java")  

```
interface BrightnessListener
```

|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [android.hardware.display.VirtualDisplayConfig.BrightnessListener](https://developer.android.com/reference/kotlin/android/hardware/display/VirtualDisplayConfig.BrightnessListener#) |

Listener for display brightness changes.

## Summary

|                                                                                                                                                                                                   Public methods                                                                                                                                                                                                   ||
|--------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| abstract[Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onBrightnessChanged](https://developer.android.com/reference/kotlin/android/hardware/display/VirtualDisplayConfig.BrightnessListener#onBrightnessChanged(kotlin.Float))`(`brightness:` `[Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html)`)` Called when the display's brightness has changed. |

## Public methods

### onBrightnessChanged

Added in[API level 36](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
abstract fun onBrightnessChanged(brightness: Float): Unit
```

Called when the display's brightness has changed.

|                                                                                                                                          Parameters                                                                                                                                           ||
|--------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `brightness` | [Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html):the new brightness of the display. Value of`0.0`indicates the minimum supported brightness and value of`1.0`indicates the maximum supported brightness. Value is between 0.0f and 1.0f inclusive |