修复saveModel不能同步获取数据的问题

netrain_flutter_app/lib/main.dart

 import 'package:flutter/material.dart';
 import 'package:fluttertoast/fluttertoast.dart';
 import 'package:netrain_flutter_app/xuehao/list_page.dart';
+import 'package:netrain_flutter_app/zhangfeng/TestPage.dart';
 
 import 'laishanqi/Stateful_page.dart';
 import 'laishanqi/Stateless_page.dart';
@@ -41,6 +42,7 @@ class MyApp extends StatelessWidget {
             "login": (context) => LoginPage(),
             "listPage":(context) => List_Page(),
             "LoginRequestPage":(context) => LoginRequestPage(),
+            "TestPage": (context) => SampleAppPage(),
             "main": (context) => mainPage(),
           },
         ),
@@ -90,7 +92,9 @@ class _RouterNavigatorState extends State<RouterNavigator> {
           _item("拍照页面", PhotoApp(), 'photo'),
           _item("登陆", LoginPage(), 'login'),
           _item("登录网络请求", LoginRequestPage(), 'LoginRequestPage'),
+          _item("zhangfengTest页面",List_Page(),'TestPage'),
           _item("listview页面",List_Page(),'listPage'),
+
         ],
       ),
     );

netrain_flutter_app/lib/zhangfeng/LoginApi.dart

@@ -10,6 +10,7 @@ class LoginApi {
       BaseHttpModel httpModel = data;
       UserModel userModel = UserModel.fromJson(httpModel.data);
       UserModel.saveModel(userModel);
+      print(UserModel.getModel().token);
       if(onResult != null){
         onResult(data, errorMsg);
       }

netrain_flutter_app/lib/zhangfeng/LoginPage.dart

@@ -51,10 +51,12 @@ class _LoginState extends State<LoginRequestPage> {
             FloatingActionButton(
               onPressed: _loginAction,
               child:Icon(Icons.add),
+              heroTag: 0,
             ),
             FloatingActionButton(
               onPressed: _logoutAction,
               child:Icon(Icons.add),
+              heroTag: 1,
             ),
           ],
         ),

netrain_flutter_app/lib/zhangfeng/Network/SaveModel.dart

 import 'dart:convert';
-import 'package:shared_preferences/shared_preferences.dart';
+import 'package:flustars/flustars.dart';
 
 class SaveModel {
   // factory UserData() => getInstance();
@@ -17,17 +17,15 @@ class SaveModel {
   //
   // }
 
-  static saveModel(dynamic model,String modelName) async {
-    SharedPreferences pref= await SharedPreferences.getInstance();
+  static saveModel(dynamic model,String modelName) {
     //将data转换成json字符串
     var jsonStr = json.encode(model);
-    pref.setString(modelName,jsonStr);
+    SpUtil.putString(modelName, jsonStr);
   }
 
   // 读取 SharedPreferences
-  static Future<Map> getModel(String modelName) async {
-    SharedPreferences prefs = await SharedPreferences.getInstance();
-    final jsonStr = prefs.getString(modelName);
+  static getModel(String modelName) {
+    final jsonStr = SpUtil.getString(modelName);
     if(jsonStr != null && jsonStr.length > 0){
       //先将json字符串转json
       Map json = jsonDecode(jsonStr);
@@ -36,8 +34,7 @@ class SaveModel {
     return null;
   }
 
-  static removeModel(String modelName) async{
-    SharedPreferences prefs = await SharedPreferences.getInstance();
-    prefs.setString(modelName,"");
+  static removeModel(String modelName){
+    SpUtil.putString(modelName,"");
   }
 }
\ No newline at end of file

netrain_flutter_app/lib/zhangfeng/TestPage.dart

+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+import 'package:dio/dio.dart';
+import 'dart:convert';
+
+class SampleAppPage extends StatefulWidget{
+  SampleAppPage({Key key}) : super(key: key);
+  @override
+  _SampleAppPageState createState() =>  _SampleAppPageState();
+}
+
+class _SampleAppPageState extends State<SampleAppPage>{
+  String _errorText;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text("Sample App"),
+      ),
+      body: Center(
+        child: TextField(
+          onSubmitted: (String text) {
+            setState(() {
+              if (!isEmail(text)) {
+                _errorText = 'Error: This is not an email';
+              } else {
+                _errorText = null;
+              }
+            });
+          },
+          decoration: InputDecoration(hintText: "This is a hint", errorText: _getErrorText()),
+        ),
+      ),
+    );
+  }
+
+  _getErrorText() {
+    return _errorText;
+  }
+
+  bool isEmail(String em) {
+    String emailRegexp =
+        r'^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$';
+
+    RegExp regExp = RegExp(emailRegexp);
+
+    return regExp.hasMatch(em);
+  }
+}
\ No newline at end of file

netrain_flutter_app/lib/zhangfeng/UserModel.dart

@@ -19,11 +19,10 @@ class UserModel{
 
   static UserModel getModel(){
     if(sharedModelInstance_ == null){
-      SaveModel.getModel('UserModel').then((json) => {
+        Map json = SaveModel.getModel('UserModel');
         if(json != null){
-          sharedModelInstance_ = new UserModel.fromJson(json)
+          sharedModelInstance_ = new UserModel.fromJson(json);
         }
-      });
     }
     return sharedModelInstance_;
   }

netrain_flutter_app/pubspec.yaml

@@ -42,7 +42,7 @@ dependencies:
   dio: ^4.0.0  #网络库
   convert: ^3.0.1 #转码器
   pull_to_refresh: ^2.0.0
-  shared_preferences: ^2.0.6
+  flustars: ^2.0.1  #强大的工具类库
 
 
 dev_dependencies: