Flutter使用Stream检索firestore集合

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

Stream<QuerySnapshot> collectionStream = FirebaseFirestore.instance.collection('your_collection').snapshots();

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

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

    return ListView(
      children: snapshot.data.docs.map((DocumentSnapshot document) {
        return ListTile(
          title: Text(document.data()['title']),
          subtitle: Text(document.data()['subtitle']),
        );
      }).toList(),
    );
  },
);