当子部件等待父部件的设置状态完成时，如何在两个有状态小部件之间使用FutureBuilder？

Future<String> fetchData() async {
  // 模拟一个异步操作，例如网络请求
  await Future.delayed(Duration(seconds: 2));
  return 'Data loaded successfully';
}

class MyWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return FutureBuilder<String>(
      future: fetchData(),
      builder: (BuildContext context, AsyncSnapshot<String> snapshot) {
        if (snapshot.connectionState == ConnectionState.waiting) {
          // 当异步操作正在进行时，显示加载中的提示
          return CircularProgressIndicator();
        } else if (snapshot.hasError) {
          // 当异步操作发生错误时，显示错误信息
          return Text('Error: ${snapshot.error}');
        } else {
          // 当异步操作完成时，显示数据
          return Text('Data: ${snapshot.data}');
        }
      },
    );
  }
}