Can provide an example that includes Navigator?

[18420621]

Can provide an example that includes Navigator?
I've been trying for a long time, but can't succeed.

[ethanblake4]

For now there is only support for named routes, eg Navigator.of(context).pushNamed('/home')... have you tried that?

[18420621]

flutter 3.3.0
dart_eval: ^0.5.4
flutter_eval: ^0.5.3

---

import 'package:flutter/material.dart';

          class MyApp extends StatelessWidget {
            const MyApp({super.key});

            // This widget is the root of your application.
            @override
            Widget build(BuildContext context) {
              return MaterialApp(
                title: 'flutter_eval demo',
                home: const MyHomePage(title: 'flutter_eval demo home page'),
                 onGenerateRoute: (settings) {
    WidgetBuilder builder;
    switch(settings.name) {
      case '/':
        builder = (_) => MyHomePage(title: '',);
        break;
      case '/welcome':
        builder = (_) => welcome();
        break;
      default:
        throw new Exception('路由名稱有誤: \${settings.name}');
    }
    return new MaterialPageRoute(builder: builder, settings: settings);
  } ,
              );
            }
          }

          class MyHomePage extends StatefulWidget {
            const MyHomePage({Key? key, required this.title}) : super(key: key);

            final String title;

            @override
            State<MyHomePage> createState() => _MyHomePageState();
          }

          class _MyHomePageState extends State<MyHomePage> {
            _MyHomePageState();
            int _counter = 0;

            @override
            Widget build(BuildContext context) {
              return Scaffold(
                appBar: AppBar(
                  title: Text(widget.title),
                ),
                body: Center(
                  child: Column(
                    mainAxisAlignment: MainAxisAlignment.center,
                    crossAxisAlignment: CrossAxisAlignment.center,
                    children: <Widget>[
                      const Text(
                        'You have pushed the button this many times:',
                      ),
                      Text(
                        '\$_counter',
                        style: Theme.of(context).textTheme.headline4,
                      ),
                    ],
                  )
                ),
                floatingActionButton: FloatingActionButton(
                   onPressed: (){
     Navigator.of(context).pushNamed('/welcome');
    },
                  tooltip: 'Increment',
                  child: Icon(Icons.add),
                ),
              );
            }
          }

class welcome extends StatefulWidget {

@OverRide
State createState() => _welcome();
}

class _welcome extends State {
int _counter = 0;

void _incrementCounter() {
setState(() {
_counter++;
});
}

@OverRide
Widget build(BuildContext context) {
return Container(color: Colors.lightBlue,);
}
}

This is the current state, sorry for not indenting

[18420621]

run funtion Navigator.of(context).pushNamed('/welcome');

======== Exception caught by gesture ===============================================================
The following RuntimeException was thrown while handling a gesture:
dart_eval runtime exception: Could not find a generator for route RouteSettings("/welcome", null) in the _WidgetsAppState.
Make sure your root app widget has provided a way to generate
this route.
Generators for routes are searched for in the following order:

1. For the "/" route, the "home" property, if non-null, is used.
2. Otherwise, the "routes" table is used, if it has an entry for the route.
3. Otherwise, onGenerateRoute is called. It should return a non-null value for any valid route not handled by "home" and "routes".
4. Finally if all else fails onUnknownRoute is called.
   Unfortunately, onUnknownRoute was not set.
   #0 _WidgetsAppState._onUnknownRoute. (package:flutter/src/widgets/app.dart:1377:9)
   is there any tools to scan project and generate .evc file or String？ #1 _WidgetsAppState._onUnknownRoute (package:flutter/src/widgets/app.dart:1392:6)
   any plan to support the packages on https://pub.dev/ #2 NavigatorState._routeNamed (package:flutter/src/widgets/navigator.dart:4064:37)

RUNTIME STATE

Program offset: 34342
Stack sample: [L0: [L0: $State$bridge#b5b15, L1: Instance of '$BuildContext', L2: null], L1: 1, L2: Instance of '$BuildContext', L3: Instance of '$NavigatorState', L4: $"/welcome", L5: null, L6: null, L7: null, L8: null, L9: null]
Call stack: [0, -1, -1, -1]
TRACE:
34336: PushReturnValue ()
34337: PushConstant (C5)
34338: BoxString (L4)
34339: PushNull ()
34340: PushArg (L4)
34341: PushArg (L5)
34342: InvokeDynamic (L3.pushNamed) <<< EXCEPTION
34343: PushReturnValue ()
34344: Pop (6)
34345: Pop (1)

[ethanblake4]

No support for onGenerateRoute yet, but there is support for routes so you should use that instead.

[18420621]

Ready to use Thank you for your support