Pass StatefulWidget data to the State class without using constructor - dart

Question

I managed to pass Stateful class variables' values to the State class through constructor like below:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Demo',
home: MyHomePage('John', 'Morison'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage(this.fname, this.lname);
final String fname;
final String lname;
#override
_MyHomePageState createState() => _MyHomePageState(fname, lname);
}
class _MyHomePageState extends State<MyHomePage> {
_MyHomePageState(this.fname, this.lname);
final String fname;
final String lname;
#override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Text('Hello $fname $lname'),
)
);
}
}
That's weird and I had to do lot of work as there is more than two variables. Is there a better way?

Answer 1

Yes, there is widget:
From Doc:
/// The current configuration.
///
/// A [State] object's configuration is the corresponding [StatefulWidget]
/// instance. This property is initialized by the framework before calling
/// [initState]. If the parent updates this location in the tree to a new
/// widget with the same [runtimeType] and [Widget.key] as the current
/// configuration, the framework will update this property to refer to the new
/// widget and then call [didUpdateWidget], passing the old configuration as
/// an argument.
T get widget => _widget;
T _widget;
Code should look like below:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Demo',
home: MyHomePage('John', 'Morison'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage(this.fname, this.lname);
final String fname;
final String lname;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
#override
Widget build(BuildContext context) {
return Scaffold(
body: Center(
child: Text('Hello ${widget.fname} ${widget.lname}'),
)
);
}
}