Flutter Firestore --如何读写对象数组

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

class MyApp extends StatelessWidget {
  final FirebaseFirestore firestore = FirebaseFirestore.instance;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter Firestore'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              ElevatedButton(
                child: Text('读取对象数组'),
                onPressed: () async {
                  QuerySnapshot snapshot = await firestore
                      .collection('collection_name')
                      .get();
                  List<dynamic> objectArray = snapshot.docs
                      .map((doc) => doc.data()['object_array'])
                      .toList();
                  // 对象数组的处理逻辑
                },
              ),
              ElevatedButton(
                child: Text('写入对象数组'),
                onPressed: () {
                  List<dynamic> objectArray = [
                    {'name': '对象1', 'value': 1},
                    {'name': '对象2', 'value': 2},
                    {'name': '对象3', 'value': 3},
                  ];
                  firestore.collection('collection_name').add({
                    'object_array': objectArray,
                  });
                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}

void main() {
  runApp(MyApp());
}