app-我的-个人信息页面，更改用户信息时，接口请求失败新增失败提示；

lib/mine/user_info_page.dart

@@ -44,13 +44,13 @@ class _UserInfoPage extends State<UserInfoPage> {
     SharedPreferences.getInstance().then((value) => {
           print(value.getString('user')),
           user = UserInfo.fromJson(jsonDecode(value.getString('user'))),
-          mobile = user.phone,
+          mobile = user?.phone ?? "",
-          modifyInfo["nickname"] = user.nickname,
+          modifyInfo["nickname"] = user?.nickname ??"",
-          modifyInfo["signature"] = user.signature,
+          modifyInfo["signature"] = user?.signature ?? "",
-          modifyInfo["birth"] = user.birth,
+          modifyInfo["birth"] = user?.birth ?? "",
-          modifyInfo["headimg"] = user.headimg,
+          modifyInfo["headimg"] = user?.headimg ?? "",
-          modifyInfo["sex"] = user.sex,
+          modifyInfo["sex"] = user?.sex ?? "",
-          age = AppUtils.getAgeByString(user.birth),
+          age = AppUtils.getAgeByString(user ?.birth ?? ""),
           refresh(),
           apiService = ApiService(Dio(),
               context: context, token: value.getString('token')),
@@ -478,6 +478,8 @@ class _UserInfoPage extends State<UserInfoPage> {
       setState(() {
         SmartDialog.showToast("用户信息修改成功", alignment: Alignment.center);
       });
+    }else{
+      SmartDialog.showToast("用户信息修改失败  " + info.msg, alignment: Alignment.center);
     }
   }