Pass args to named route

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      routes: {
        '/': (context) => const RouterTestRoute(),
        'tips': (context) {
          return TipRoute(
              text: ModalRoute.of(context)!.settings.arguments as String);
        }
      },
      initialRoute: '/',
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return Center(
      child: ElevatedButton(
          onPressed: () async {
            var result = await Navigator.of(context)
                .pushNamed('tips', arguments: 'text');
            print("路由返回值：$result");
          },
          child: const Text("打开提示页")),
    );
  }
}

class TipRoute extends StatelessWidget {
  final String text;

  const TipRoute({super.key, required this.text});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text("提示")),
      body: Padding(
        padding: const EdgeInsets.all(18),
        child: Center(
          child: Column(
            children: [
              Text(text),
              ElevatedButton(
                  onPressed: () => Navigator.pop(context, "我是返回值"),
                  child: const Text("返回"))
            ],
          ),
        ),
      ),
    );
  }
}