---
title: brightnessDidChangeNotification
framework: uikit
role: symbol
role_heading: Type Property
path: uikit/uiscreen/brightnessdidchangenotification
---

# brightnessDidChangeNotification

A notification that posts when a screen’s brightness changes.

## Declaration

```swift
nonisolated class let brightnessDidChangeNotification: NSNotification.Name
```

## Discussion

Discussion The object of the notification is the UIScreen object whose brightness property changed. There is no userInfo dictionary.

## See Also

### Notifications

- [modeDidChangeNotification](uikit/uiscreen/modedidchangenotification.md)
- [capturedDidChangeNotification](uikit/uiscreen/captureddidchangenotification.md)
- [referenceDisplayModeStatusDidChangeNotification](uikit/uiscreen/referencedisplaymodestatusdidchangenotification.md)