handlePlatformBrightnessChanged method Null safety
override
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
@override
void handlePlatformBrightnessChanged() {
super.handlePlatformBrightnessChanged();
for (final WidgetsBindingObserver observer in _observers) {
observer.didChangePlatformBrightness();
}
}