我正在尝试使用generateRoute将多个参数传递给flutter屏幕

MaterialApp(
  // ...
  onGenerateRoute: (settings) {
    if (settings.name == '/screen') {
      // 解析参数
      final args = settings.arguments as Map<String, dynamic>;
      // 创建并返回路由
      return MaterialPageRoute(
        builder: (_) => Screen(args['param1'], args['param2']),
      );
    }
    // 其他路由的处理
    return null;
  },
  // ...
)

Navigator.pushNamed(
  context,
  '/screen',
  arguments: {
    'param1': value1,
    'param2': value2,
  },
);

class Screen extends StatelessWidget {
  final String param1;
  final String param2;

  Screen(this.param1, this.param2);

  @override
  Widget build(BuildContext context) {
    // 使用参数构建UI
    return Scaffold(
      appBar: AppBar(
        title: Text('Screen'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text('Param 1: $param1'),
            Text('Param 2: $param2'),
          ],
        ),
      ),
    );
  }
}