fluterr shared_preferences 存储用户信息 MissingPluginException(No implementation found for method getAll on channel

 环境：

flutter  [√] Flutter (Channel stable, 2.2.3, on Microsoft Windows [Version 10.0.19042.1110], locale zh-CN)

dependencies

# 数据存储  登录信息
shared_preferences: ^2.0.6

example示例   https://pub.flutter-io.cn/packages/shared_preferences/example

import 'package:shared_preferences/shared_preferences.dart';
Future<SharedPreferences> _prefs = SharedPreferences.getInstance();

但是直接使用就会出现错误：

MissingPluginException(No implementation found for method getAll on channel

需要在main函数增加  SharedPreferences.setMockInitialValues({});   // 处理报错

import 'package:shared_preferences/shared_preferences.dart';

void main() {
  SharedPreferences.setMockInitialValues({});   // 处理报错
  Store<AppState> store = new Store<AppState>(mainReducer,
      initialState: new AppState(
        auth: new AuthState(),
      ));

//  Global.init().then((e) => runApp(MyApp(store: store)));
//  Future<SharedPreferences> _prefs = SharedPreferences.getInstance();
  WidgetsFlutterBinding.ensureInitialized(); //解决加载json错误
  Global.init().then((dynamic res) {
    print(res);
    if (res == 'ok') {
      $Api.dioUtil = DioUtil(); //实例化dio
      runApp(MyApp(store: store));
    }
  });
}