Flutter: Get passed arguments from Navigator in Widget’s state’s initState

by

use MaterialApp.onGenerateRoute property like this:

onGenerateRoute: (RouteSettings settings) {
  print('build route for ${settings.name}');
  var routes = <String, WidgetBuilder>{
    "hello": (ctx) => Hello(settings.arguments),
    "other": (ctx) => SomeWidget(),
  };
  WidgetBuilder builder = routes[settings.name];
  return MaterialPageRoute(builder: (ctx) => builder(ctx));
},

now you can simply use NavigatorState.pushNamed:

Navigator.of(context).pushNamed("hello", arguments: "world");

here you have some test Hello widget:

class Hello extends StatelessWidget {
  final String greet;

  Hello(this.greet);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(),
      body: Center(
        child: Text(
          'hello $greet',
          textScaleFactor: 5.0,
        ),
      ),
    );
  }
}

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