如何在BuildContext之前将数据从一个屏幕传递到另一个屏幕？

class SecondScreen extends StatelessWidget {
  final String data;

  SecondScreen({required this.data});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Second Screen'),
      ),
      body: Center(
        child: Text(data),
      ),
    );
  }
}

// 在第一个屏幕中导航到第二个屏幕并传递数据
Navigator.push(
  context,
  MaterialPageRoute(builder: (context) => SecondScreen(data: 'Hello from First Screen')),
);

Navigator.pushNamed(
  context,
  '/second',
  arguments: 'Hello from First Screen',
);

// 在第二个屏幕中获取路由参数
class SecondScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final String data = ModalRoute.of(context)!.settings.arguments as String;
    return Scaffold(
      appBar: AppBar(
        title: Text('Second Screen'),
      ),
      body: Center(
        child: Text(data),
      ),
    );
  }
}

MaterialApp(
  routes: {
    '/second': (context) => SecondScreen(),
  },
);

// 定义一个ChangeNotifier
class DataModel extends ChangeNotifier {
  String _data = '';
  String get data => _data;

  void setData(String newData) {
    _data = newData;
    notifyListeners();
  }
}

// 在应用程序的顶层提供DataModel
void main() {
  runApp(
    ChangeNotifierProvider(
      create: (context) => DataModel(),
      child: MyApp(),
    ),
  );
}

// 在第一个屏幕中设置数据
Provider.of<DataModel>(context, listen: false).setData('Hello from First Screen');

// 在第二个屏幕中获取数据
class SecondScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final dataModel = Provider.of<DataModel>(context);
    return Scaffold(
      appBar: AppBar(
        title: Text('Second Screen'),
      ),
      body: Center(
        child: Text(dataModel.data),
      ),
    );
  }
}