call method in one stateful widget from another stateful widget - Flutter

Question

I have a flutter project that i am working on i cant put the whole code cause its more than 500 lines of code so i will try to ask my question as simply as i acn using the i

Answer 1

You can give this a try, it will call a method defined in Page2 (StatefulWidget) from Page1 (StatefulWidget) widget.

class Page1 extends StatefulWidget {
  @override
  _Page1State createState() => _Page1State();
}

class _Page1State extends State {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: RaisedButton(
          child: Text("Call page 2 method"),
          onPressed: () => Page2().method(),
        ),
      ),
    );
  }
}

class Page2 extends StatefulWidget {
  method() => createState().methodInPage2();

  @override
  _Page2State createState() => _Page2State();
}

class _Page2State extends State {
  methodInPage2() => print("method in page 2");

  @override
  Widget build(BuildContext context) => Container();
}