onPlatformBrightnessChanged property

  1. @Deprecated('Use WidgetTester.platformDispatcher.onPlatformBrightnessChanged instead. ' 'Deprecated to prepare for the upcoming multi-window support. ' 'This feature was deprecated after v3.9.0-0.1.pre.')
  2. @override
VoidCallback? get onPlatformBrightnessChanged
override

A callback that is invoked whenever platformBrightness changes value.

Accessing this value returns the value contained in the PlatformDispatcher singleton, so instead of getting it from here, you should consider getting it from WidgetsBinding.instance.platformDispatcher instead (or, when WidgetsBinding isn't available, from PlatformDispatcher.instance). The reason this value forwards to the PlatformDispatcher is to provide convenience for applications that only use a single main window.

The framework invokes this callback in the same zone in which the callback was set.

See also:

Implementation

@Deprecated(
  'Use WidgetTester.platformDispatcher.onPlatformBrightnessChanged instead. '
  'Deprecated to prepare for the upcoming multi-window support. '
  'This feature was deprecated after v3.9.0-0.1.pre.'
)
@override
VoidCallback? get onPlatformBrightnessChanged => platformDispatcher.onPlatformBrightnessChanged;
  1. @Deprecated('Use WidgetTester.platformDispatcher.onPlatformBrightnessChanged instead. ' 'Deprecated to prepare for the upcoming multi-window support. ' 'This feature was deprecated after v3.9.0-0.1.pre.')
  2. @override
set onPlatformBrightnessChanged (VoidCallback? callback)
override

Implementation

@Deprecated(
  'Use WidgetTester.platformDispatcher.onPlatformBrightnessChanged instead. '
  'Deprecated to prepare for the upcoming multi-window support. '
  'This feature was deprecated after v3.9.0-0.1.pre.'
)
@override
set onPlatformBrightnessChanged(VoidCallback? callback) {
  platformDispatcher.onPlatformBrightnessChanged = callback;
}