Navigator pass arguments with pushNamed

Question

Might have been asked before but I can't find it but how do you pass a arguments to a named route?

This is how I build my routes

Widget build(BuildContext context) {     return new Navigator(       initialRoute: 'home/chooseroom',       onGenerateRoute: (RouteSettings settings) {         WidgetBuilder builder;         switch (settings.name) {           case 'home/chooseroom':             // navigates to 'signup/choose_credentials'.             builder = (BuildContext _) => new ChoosePage();             break;           case 'home/createpage':             builder = (BuildContext _) => new CreateRoomPage();             break;           case 'home/presentation':             builder = (BuildContext _) => new Presentation();             break;           default:             throw new Exception('Invalid route: ${settings.name}');         }         return new MaterialPageRoute(builder: builder, settings: settings);       },     ); 

This is how you call it Navigator.of(context).pushNamed('home/presentation')

But what if my widget is new Presentation(arg1, arg2, arg3)?

Answer 1

No need for onGenerateRoute. Simply use

var exampleArgument = 'example string';  Navigator.pushNamed(     context,     '/otherscreen',     arguments: {'exampleArgument': exampleArgument}, ); 

and extract the arguments as follows:

@override Widget build(BuildContext context) {     final arguments = (ModalRoute.of(context)?.settings.arguments ?? <String, dynamic>{}) as Map;      print(arguments['exampleArgument']);      return Scaffold(...); }