Flutter for Beginners

Arguments

The pushNamed method also accepts arguments, to pass to the new Route:

Navigator.of(context).pushNamed('/2', arguments: "Hello from screen 1");

In this case, we need to use onGenerateRoute from WidgetsApp so that we have access to these arguments through the RouteSettings object:

// navigation_widgetsapp_named_routes_arguments.dartclass _NavigatorNamedRoutesArgumentsAppState    extends State<NavigatorNamedRoutesArgumentsApp> {  @override  Widget build(BuildContext context) {    return WidgetsApp(      color: Colors.blue,       onGenerateRoute: (settings) {        if(settings.name == '/') {          return MaterialPageRoute(            builder: (context) => _screen1(context)          );        } else if(settings.name == '/2') {          return MaterialPageRoute( builder: (context) => _screen2(context, ...