Trigger a function from a widget to a State object

Question

This is a simplified version of the scenario:

class ParentWdiegt extends StatelessWidget{
//
//
floatinActionButton: FloatingActionButtonWidget(onPressed:()=         


        

Answer 1

Try to store the state of the widget and then access

class MySFWidget extends StatefulWidget {
  SFWidgetState currState;

  @override
  SFWidgetState createState(){
    currState = new SFWidgetState();
    return currState;
  };

}

class SFWidgetState extends State {

  int prop;

  void SomeMethod(){
    // DO Something
  }

  @override
  Widget build(BuildContext context) {
    return null;
  }

}

Then, access its property or call method by :

myWidgetInstance.currState.prop

myWidgetInstance.currState.SomeMethod()