add login

lib/base/userinfo_viewmodel.dart

@@ -0,0 +1,46 @@
+import 'dart:convert';
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:qinglong_app/base/base_viewmodel.dart';
+import 'package:qinglong_app/utils/sp_utils.dart';
+
+import 'sp_const.dart';
+
+var userInfoProvider = ChangeNotifierProvider((ref) => UserInfoViewModel());
+
+class UserInfoViewModel extends ViewModel {
+  UserInfoBean? _userInfoBean;
+
+  UserInfoViewModel() {
+    String userInfoJson = SpUtil.getString(sp_UserINfo);
+    if (userInfoJson.isNotEmpty) {
+      _userInfoBean = UserInfoBean.fromJson(jsonDecode(userInfoJson));
+    }
+  }
+
+  void updateUserInfoBean(UserInfoBean userInfoBean) {
+    _userInfoBean = userInfoBean;
+    SpUtil.putString(sp_UserINfo, jsonEncode(userInfoBean));
+  }
+
+  UserInfoBean? get userInfoBean => _userInfoBean;
+}
+
+class UserInfoBean {
+  String? name;
+  int? age;
+
+  UserInfoBean({this.name, this.age});
+
+  UserInfoBean.fromJson(Map<String, dynamic> json) {
+    name = json['name'];
+    age = json['age'];
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = new Map<String, dynamic>();
+    data['name'] = this.name;
+    data['age'] = this.age;
+    return data;
+  }
+}