如何在Flutter中获取StreamBuilder中的文档详细信息

Stream<int> counterStream() {
  return Stream<int>.periodic(Duration(seconds: 1), (i) => i).take(5);
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'StreamBuilder Example',
      home: Scaffold(
        appBar: AppBar(
          title: Text('StreamBuilder Example'),
        ),
        body: Center(
          child: StreamBuilder<int>(
            stream: counterStream(),
            builder: (BuildContext context, AsyncSnapshot<int> snapshot) {
              if (snapshot.hasData) {
                // 获取数据
                int data = snapshot.data;
                // 构建界面
                return Text('Data: $data');
              } else if (snapshot.hasError) {
                // 处理错误
                return Text('Error: ${snapshot.error}');
              } else {
                // 显示加载中的界面
                return CircularProgressIndicator();
              }
            },
          ),
        ),
      ),
    );
  }
}

void main() {
  runApp(MyApp());
}