如何在streambuilder中从其他集合中获取数据

dependencies:
  flutter:
    sdk: flutter
  cloud_firestore: ^2.5.0

import 'package:flutter/material.dart';
import 'package:cloud_firestore/cloud_firestore.dart';

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

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

    if (snapshot.hasData) {
      // 处理数据并更新UI
      // 例如，可以使用snapshot.data.docs访问文档列表
      // snapshot.data.docs[index].data()可以访问每个文档的数据
      return ListView.builder(
        itemCount: snapshot.data.docs.length,
        itemBuilder: (BuildContext context, int index) {
          return ListTile(
            title: Text(snapshot.data.docs[index].data()['title']),
            subtitle: Text(snapshot.data.docs[index].data()['description']),
          );
        },
      );
    }

    return Text('No data available');
  },
);