如何从flutter上的firebase中获取字符串数据数组？

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

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

Future<List<String>> getStringDataArray() async {
  List<String> dataArray = [];
  
  // 获取Firebase实例
  FirebaseFirestore firestore = FirebaseFirestore.instance;
  
  // 获取集合引用
  CollectionReference collectionRef = firestore.collection('your_collection');
  
  // 获取文档快照
  QuerySnapshot querySnapshot = await collectionRef.get();
  
  // 遍历文档快照，获取数据
  querySnapshot.docs.forEach((doc) {
    String data = doc.data()['your_field'];
    dataArray.add(data);
  });
  
  return dataArray;
}

List<String> data = await getStringDataArray();