Flutter:如何从其uid中检索所有的Firebase用户数据？

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

class UserDataRetrieval extends StatefulWidget {
  @override
  _UserDataRetrievalState createState() => _UserDataRetrievalState();
}

class _UserDataRetrievalState extends State<UserDataRetrieval> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('User Data Retrieval'),
      ),
      body: FutureBuilder(
        future: retrieveUserData(),
        builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
          if (snapshot.connectionState == ConnectionState.waiting) {
            return Center(
              child: CircularProgressIndicator(),
            );
          } else if (snapshot.hasError) {
            return Center(
              child: Text('Error: ${snapshot.error}'),
            );
          } else {
            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['email']),
                );
              }).toList(),
            );
          }
        },
      ),
    );
  }

  Future<QuerySnapshot> retrieveUserData() async {
    FirebaseAuth auth = FirebaseAuth.instance;
    User? user = auth.currentUser;

    if (user != null) {
      FirebaseFirestore firestore = FirebaseFirestore.instance;
      QuerySnapshot querySnapshot = await firestore.collection('users').get();
      return querySnapshot;
    } else {
      throw Exception('User is not authenticated.');
    }
  }
}