像Flutter中的条件路由？

Map<String, WidgetBuilder> routes = {
  '/': (BuildContext context) => HomePage(),
  '/login': (BuildContext context) => LoginPage(),
  '/profile': (BuildContext context) => ProfilePage(),
};

Navigator.pushReplacementNamed(context, '/profile', arguments: {'userId': '123'});

class ProfilePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final Map<String, dynamic> arguments = ModalRoute.of(context).settings.arguments;
    final String userId = arguments['userId'];

    // 根据userId展示用户信息
    // ...

    return Scaffold(
      appBar: AppBar(
        title: Text('Profile Page'),
      ),
      body: Center(
        child: Text('User ID: $userId'),
      ),
    );
  }
}