完成登录数据的存储

netrain_flutter_app/lib/main.dart

@@ -8,6 +8,7 @@ import 'laishanqi/layout_page.dart';
 import 'laishanqi/netrain/user/loginPage.dart';
 import 'laishanqi/netrain/user/RegisterPage.dart';
 import 'laishanqi/photo.dart';
+import 'zhangfeng/UserData.dart';
 
 import 'zhangfeng/LoginPage.dart';
 
@@ -15,6 +16,7 @@ void main() {
   runApp(MyApp());
   // runApp(Login());
   // runApp(TestPage());
+  UserData.instance;
 
   print("启动");
 }

netrain_flutter_app/lib/zhangfeng/LoginApi.dart

 import 'Network/HttpManager.dart';
 import 'Network/BaseHttpModel.dart';
-import 'Network/UrlPath.dart';
+import 'UserModel.dart';
+import 'UserData.dart';
 
 /// 所有接口类
 class LoginApi {
   ///示例请求
-  static loginRequest(Map<String, dynamic> param) {
+  static loginRequest(Map<String, dynamic> param, OnResult onResult) {
     return HttpManager.getInstance().request('auth/oauth/token', parameters: param, onResult: (data,errorMsg){
       BaseHttpModel httpModel = data;
-      print(httpModel.data);
+      UserModel userModel = UserModel.fromJson(httpModel.data);
+      UserData.getInstance().saveUserModel(userModel);
+      if(onResult != null){
+        onResult(data, errorMsg);
+      }
     });
   }
 }

netrain_flutter_app/lib/zhangfeng/LoginPage.dart

 import 'package:flutter/material.dart';
 import 'package:fluttertoast/fluttertoast.dart';
+import 'package:netrain_flutter_app/zhangfeng/Network/HttpManager.dart';
 import 'LoginApi.dart';
-
+import 'UserData.dart';
 
 class LoginRequestPage extends StatefulWidget {
   final String title = "登录页";
+
   @override
   _LoginState createState() => _LoginState();
 }
@@ -12,6 +14,10 @@ class LoginRequestPage extends StatefulWidget {
 class _LoginState extends State<LoginRequestPage> {
   // This widget is the root of your application.
   void _loginAction() {
+    if(UserData.instance.userModel != null && UserData.instance.userModel.token != null){
+      Fluttertoast.showToast(msg:'已经登录');
+      return;
+    }
     Map<String,String> map = new Map<String,String>();
     map['workNumber'] = 'NTR000007';
     map['password'] = '123456';
@@ -20,7 +26,17 @@ class _LoginState extends State<LoginRequestPage> {
     map['client_id'] = 'app';
     map['client_secret'] = '123456';
     map['platform'] = '0';
-    LoginApi.loginRequest(map);
+    LoginApi.loginRequest(map, (httpModel, error){
+      if(error != null){
+        Fluttertoast.showToast(msg: error);
+      }else{
+        Fluttertoast.showToast(msg:'登录成功');
+      }
+    });
+  }
+  void _logoutAction() {
+    UserData.instance.removeUserModel();
+    Fluttertoast.showToast(msg:'退出成功');
   }
 
   @override
@@ -37,6 +53,10 @@ class _LoginState extends State<LoginRequestPage> {
               onPressed: _loginAction,
               child:Icon(Icons.add),
             ),
+            FloatingActionButton(
+              onPressed: _logoutAction,
+              child:Icon(Icons.add),
+            ),
           ],
         ),
       ), // This trailing comma makes auto-formatting nicer for build methods.

netrain_flutter_app/lib/zhangfeng/Network/BaseHttpModel.dart

@@ -14,7 +14,7 @@ class BaseHttpModel{
   Map<String, dynamic> toJson() => _$BaseHttpModelToJson(this);
 
   bool isSuccess(){
-    return this.code == 200;
+    return this.code == 0;
   }
 
   String errorMsg() {

netrain_flutter_app/lib/zhangfeng/Network/HttpManager.dart

@@ -3,6 +3,8 @@ import 'package:netrain_flutter_app/zhangfeng/Network/BaseHttpModel.dart';
 import 'BaseHttpModel.dart';
 import 'UrlPath.dart';
 
+typedef OnResult = void Function(BaseHttpModel t, String errorMsg) ;
+
 class HttpManager {
   static HttpManager _instance = HttpManager._internal();
   Dio _dio;
@@ -46,7 +48,7 @@ class HttpManager {
   request(String url,
       {parameters,
         method = 'GET',
-        Function(BaseHttpModel t, String errorMsg) onResult}) async {
+        OnResult onResult}) async {
     parameters = parameters ?? {};
     if(onResult==null){
       return;
@@ -55,7 +57,7 @@ class HttpManager {
       Response response = await _dio.request(url,
           queryParameters: parameters, options: new Options(method: method));
       BaseHttpModel httpModel = BaseHttpModel.fromJson(response.data);
-      if (httpModel.isSuccess() == true) {
+      if (httpModel.isSuccess()) {
         onResult(httpModel, null);
       }else{
         onResult(httpModel, httpModel.errorMsg());

netrain_flutter_app/lib/zhangfeng/UserData.dart

+import 'dart:convert';
+
+import 'UserModel.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+
+class UserData {
+  UserModel userModel;
+  factory UserData() => getInstance();
+  static UserData get instance => getInstance();
+  static UserData _instance;
+
+  static UserData getInstance() {
+    if (_instance == null) {
+      _instance = new UserData._internal();
+    }
+    return _instance;
+  }
+
+  UserData._internal() {
+    // 初始化
+    getUserModel();
+  }
+
+  saveUserModel(UserModel userModel) async {
+    SharedPreferences pref= await SharedPreferences.getInstance();
+    //将data转换成json字符串
+    var jsonStr = json.encode(userModel);
+    pref.setString('UserModel',jsonStr);
+    this.userModel = userModel;
+  }
+
+  // 读取 SharedPreferences
+  getUserModel() async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    final jsonStr = prefs.getString('UserModel');
+    if(jsonStr != null && jsonStr.length > 0){
+      //先将json字符串转json
+      Map json = jsonDecode(jsonStr);
+      //将json转model
+      final model = new UserModel.fromJson(json);
+      this.userModel = model;
+    }
+  }
+
+  removeUserModel() async{
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    prefs.setString('UserModel',"");
+    this.userModel = null;
+  }
+}
\ No newline at end of file

netrain_flutter_app/lib/zhangfeng/UserModel.dart

+import 'package:json_annotation/json_annotation.dart';
+
+part 'UserModel.g.dart';
+
+@JsonSerializable()
+
+class UserModel{
+  final token;
+  final header;
+  final tokenHead;
+
+  UserModel(this.token, this.header, this.tokenHead);
+
+  factory UserModel.fromJson(Map<String, dynamic> json) => _$UserModelFromJson(json);
+  Map<String, dynamic> toJson() => _$UserModelToJson(this);
+}

netrain_flutter_app/lib/zhangfeng/UserModel.g.dart

+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'UserModel.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+UserModel _$UserModelFromJson(Map<String, dynamic> json) {
+  return UserModel(
+    json['token'],
+    json['header'],
+    json['tokenHead'],
+  );
+}
+
+Map<String, dynamic> _$UserModelToJson(UserModel instance) => <String, dynamic>{
+      'token': instance.token,
+      'header': instance.header,
+      'tokenHead': instance.tokenHead,
+    };

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
 
 
 dev_dependencies: