使用Flutter收听特定Firestore文档中的两个精确(但独立)字段

import 'package:firebase_core/firebase_core.dart';

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

import 'package:cloud_firestore/cloud_firestore.dart';

void getDocumentFields() {
  FirebaseFirestore.instance
      .collection('your_collection')
      .doc('your_document_id')
      .get()
      .then((DocumentSnapshot documentSnapshot) {
    if (documentSnapshot.exists) {
      var field1 = documentSnapshot.data()['field1'];
      var field2 = documentSnapshot.data()['field2'];
      // 处理字段值
    }
  });
}

import 'package:cloud_firestore/cloud_firestore.dart';

void listenToDocumentFields() {
  FirebaseFirestore.instance
      .collection('your_collection')
      .doc('your_document_id')
      .snapshots()
      .listen((DocumentSnapshot documentSnapshot) {
    if (documentSnapshot.exists) {
      var field1 = documentSnapshot.data()['field1'];
      var field2 = documentSnapshot.data()['field2'];
      // 处理字段值的变化
    }
  });
}