如何使用Stream Builder从多个firebase集合中获取数据

import 'package:firebase_core/firebase_core.dart';
import 'package:cloud_firestore/cloud_firestore.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();
  runApp(MyApp());
}

StreamBuilder<QuerySnapshot>(
  stream: FirebaseFirestore.instance.collection('your_collection_path').snapshots(),
  builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
    if (snapshot.hasError) {
      return Text('Error: ${snapshot.error}');
    }

    if (snapshot.connectionState == ConnectionState.waiting) {
      return Text('Loading...');
    }

    // 处理数据
    final data = snapshot.data;
    // TODO: 在这里处理数据并更新用户界面

    return Container();
  },
)