handlePlatformBrightnessChanged method Null safety
protected">@protected
Called when the platform brightness changes.
The current platform brightness can be queried from a Flutter binding or from a MediaQuery widget. The latter is preferred from widgets because it causes the widget to be automatically rebuilt when the brightness changes.
Querying MediaQuery directly. Preferred.
final Brightness brightness = MediaQuery.platformBrightnessOf(context);
Querying PlatformDispatcher.platformBrightness.
final Brightness brightness = WidgetsBinding.instance.platformDispatcher.platformBrightness;
Querying MediaQueryData.
final MediaQueryData mediaQueryData = MediaQuery.of(context);
final Brightness brightness = mediaQueryData.platformBrightness;Implementation
@protected
void handlePlatformBrightnessChanged() { }