Flutter Navigator路由傳參的實現

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false, // 隱藏預覽中的debug
      title: 'Flutter Demo',
      routes: {
        '/': (context) => const HomePage(),
        "menu": (context) => const MenuPage()
      },
    );
  }
}

// 定義HomePage
class HomePage extends StatelessWidget {
  const HomePage({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("登入"),
      ),
      body: ElevatedButton(
        onPressed: () async {
          // 實現路由跳轉
          var result = await Navigator.pushNamed(context, 'menu',
              arguments: {'name': 'title'});
          print(result);
        },
        child: const Text('登入'),
      ),
    );
  }
}

// 定義MenuPage
class MenuPage extends StatelessWidget {
  const MenuPage({Key? key}) : super(key: key);
  @override
  // 接收傳參
  Widget build(BuildContext context) {
    dynamic argumentsData = ModalRoute.of(context)?.settings.arguments;
    return Scaffold(
      appBar: AppBar(
        title: Text('選單' + argumentsData.toString()),
      ),
      body: ElevatedButton(
        onPressed: () {
          Navigator.pop(context, {'name': "Navigator.pop傳參"});
        },
        child: const Text("返回"),
      ),
    );
  }
}

// 定義HomePage
class HomePage extends StatelessWidget {
  const HomePage ({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("登入"),
      ),
      body: ElevatedButton(
        onPressed: () {
          // 實現路由跳轉
          Navigator.push(
            context,
            MaterialPageRoute(
              builder: (context) => const MenuPage(
                title: '選單123',
              ), // 需要跳轉的頁面
            ), // 修改路由的名稱、資訊等
          );
        },
        child: const Text('登入'),
      ),
    );
  }
}

// 定義MenuPage
class MenuPage extends StatelessWidget {
  // 定義接收的欄位
  final String title;
  const MenuPage({Key? key, required this.title}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(title),
      ),
      body: ElevatedButton(
        onPressed: () {
          Navigator.pop(context);
        },
        child: const Text("返回"),
      ),
    );
  }
}

// 定義HomePage
class HomePage extends StatelessWidget {
  const HomePage({Key? key}) : super(key: key);
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("登入"),
      ),
      body: ElevatedButton(
        onPressed: () {
          // 實現路由跳轉
          Navigator.push(
            context,
            MaterialPageRoute(
                builder: (context) => const MenuPage(),
                // 修改路由的名稱、資訊等
                settings: const RouteSettings(
                    name: '選單', arguments: {"name": '123'}) // 需要跳轉的頁面
                ),
          );
        },
        child: const Text('登入'),
      ),
    );
  }
}

// 定義MenuPage
class MenuPage extends StatelessWidget {
  const MenuPage({Key? key}) : super(key: key);
  @override
  // 接收傳參
  Widget build(BuildContext context) {
    dynamic argumentsData = ModalRoute.of(context)?.settings.arguments;
    return Scaffold(
      appBar: AppBar(
        title: Text('選單' + argumentsData.toString()),
      ),
      body: ElevatedButton(
        onPressed: () {
          Navigator.pop(context);
        },
        child: const Text("返回"),
      ),
    );
  }
}

// 定義HomePage
class HomePage extends StatelessWidget {
  const HomePage ({Key? key}) : super(key: key);;
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text("登入"),
      ),
      body: ElevatedButton(
        onPressed: () async {
          // 實現路由跳轉
          var result = await Navigator.push(
            context,
            MaterialPageRoute(
              builder: (context) => const MenuPage(),
            ),
          );
          print(result);
        },
        child: const Text('登入'),
      ),
    );
  }
}

// 定義MenuPage
class MenuPage extends StatelessWidget {
  const MenuPage({Key? key}) : super(key: key);
  @override
  // 接收傳參
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('選單'),
      ),
      body: ElevatedButton(
        onPressed: () {
          Navigator.pop(context, {'name': "Navigator.pop傳參"});
        },
        child: const Text("返回"),
      ),
    );
  }
}