onAccessibilityFeaturesChanged property Null safety

VoidCallback? onAccessibilityFeaturesChanged

A callback that is invoked when the value of accessibilityFeatures changes.

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

Implementation

VoidCallback? get onAccessibilityFeaturesChanged => _onAccessibilityFeaturesChanged;
void onAccessibilityFeaturesChanged= (VoidCallback? callback)

Implementation

set onAccessibilityFeaturesChanged(VoidCallback? callback) {
  _onAccessibilityFeaturesChanged = callback;
  _onAccessibilityFeaturesChangedZone = Zone.current;
}