如何显示地图中的数据列表？- flutter firestore

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

class MapDataList extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return StreamBuilder<QuerySnapshot>(
      stream: FirebaseFirestore.instance.collection('map_data').snapshots(),
      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) {
            Map<String, dynamic> data = document.data() as Map<String, dynamic>;
            return ListTile(
              title: Text(data['name']),
              subtitle: Text(data['description']),
              onTap: () {
                // 处理列表项点击事件
              },
            );
          }).toList(),
        );
      },
    );
  }
}