onTextScaleFactorChanged property Null safety

  1. @override
VoidCallback? onTextScaleFactorChanged
override

A callback that is invoked whenever textScaleFactor changes value.

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

See also:

Implementation

@override
ui.VoidCallback? get onTextScaleFactorChanged => _platformDispatcher.onTextScaleFactorChanged;
  1. @override
void onTextScaleFactorChanged=(VoidCallback? callback)
override

Implementation

@override
set onTextScaleFactorChanged(ui.VoidCallback? callback) {
  _platformDispatcher.onTextScaleFactorChanged = callback;
}