Flutter Firestore分页(添加/删除项目)

import 'package:firebase_core/firebase_core.dart';

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

import 'package:cloud_firestore/cloud_firestore.dart';

Future<List<DocumentSnapshot>> getPaginatedData(int limit, DocumentSnapshot lastDocument) async {
  QuerySnapshot querySnapshot;
  if (lastDocument == null) {
    querySnapshot = await FirebaseFirestore.instance
        .collection('your_collection')
        .orderBy('your_field')
        .limit(limit)
        .get();
  } else {
    querySnapshot = await FirebaseFirestore.instance
        .collection('your_collection')
        .orderBy('your_field')
        .startAfterDocument(lastDocument)
        .limit(limit)
        .get();
  }
  return querySnapshot.docs;
}

import 'package:cloud_firestore/cloud_firestore.dart';

Future<void> deletePaginatedData(int limit) async {
  QuerySnapshot querySnapshot = await FirebaseFirestore.instance
      .collection('your_collection')
      .where('your_field', isEqualTo: 'your_value')
      .limit(limit)
      .get();
  
  querySnapshot.docs.forEach((doc) {
    doc.reference.delete();
  });
}