如何使用共享首选项在flutter中持久化自定义对象列表？

dependencies:
  shared_preferences: ^2.0.6

import 'package:shared_preferences/shared_preferences.dart';

Future<void> saveCustomObjectList(List<CustomObject> objects) async {
  SharedPreferences prefs = await SharedPreferences.getInstance();
  List<String> encodedObjects = objects.map((object) => json.encode(object.toJson())).toList();
  await prefs.setStringList('customObjects', encodedObjects);
}

Future<List<CustomObject>> getCustomObjectList() async {
  SharedPreferences prefs = await SharedPreferences.getInstance();
  List<String> encodedObjects = prefs.getStringList('customObjects') ?? [];
  List<CustomObject> objects = encodedObjects.map((encodedObject) {
    Map<String, dynamic> decodedObject = json.decode(encodedObject);
    return CustomObject.fromJson(decodedObject);
  }).toList();
  return objects;
}

// 保存自定义对象列表
List<CustomObject> objects = [...]; // 自定义对象列表
await saveCustomObjectList(objects);

// 读取自定义对象列表
List<CustomObject> savedObjects = await getCustomObjectList();