如何在flutter应用程序的云firestore中记录带有嵌套数组的json

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Firestore Demo',
      home: MyHomePage(),
    );
  }
}

{
  "name": "John Doe",
  "age": 30,
  "hobbies": [
    "reading",
    "gaming",
    "traveling"
  ]
}

void addData() {
  FirebaseFirestore.instance
    .collection('users')
    .add({
      'name': 'John Doe',
      'age': 30,
      'hobbies': ['reading', 'gaming', 'traveling']
    })
    .then((value) => print("Data added"))
    .catchError((error) => print("Failed to add data: $error"));
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  CollectionReference users = FirebaseFirestore.instance.collection('users');

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Firestore Demo'),
      ),
      body: StreamBuilder<QuerySnapshot>(
        stream: users.snapshots(),
        builder: (BuildContext context, AsyncSnapshot<QuerySnapshot> snapshot) {
          if (snapshot.hasError) {
            return Text('Error: ${snapshot.error}');
          }

          if (snapshot.connectionState == ConnectionState.waiting) {
            return Text('Loading...');
          }

          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['age'].toString()),
                trailing: Text(data['hobbies'].join(', ')),
              );
            }).toList(),
          );
        },
      ),
    );
  }
}