onInit method Null safety

  1. @mustCallSuper
  2. @override
void onInit()
@mustCallSuper, override

Called immediately after the widget is allocated in memory. You might use this to initialize something for the controller.

Implementation

@mustCallSuper
@override
void onInit() {
  super.onInit();
  WidgetsBinding.instance!.addObserver(this);
}