单例模型

单例模型

import 'dart:convert';
import '/App/AppManager/AppRequest.dart';
import '/static/Logger.dart';
import '/FBTool/FBSave/FBSave.dart';
import '/User/UserModel.dart';

class UserManager {

  bool startLogout = false;

  // 工厂模式
  factory UserManager(value) => _getInstance(value);
  static UserManager get instance => _getInstance(null);
  static UserManager _instance;
  UserManager._internal(String v) {
    Logger.log("初始化用户管理类：$this");
    readUserString(v);
  }
  static UserManager _getInstance(String v) {
    if (_instance == null) {
      _instance = new UserManager._internal(v);
    }
    return _instance;
  }

  void readUserString(String v) async {
    if (v == null || v.isEmpty){
      v = await FBSave.getString(FBSave.KUserLoginInfoKey);
    }

    Logger.log("通过json初始化用户：$v");
    if (v != null && v.isNotEmpty && v.length > 2) {
      Map<String, dynamic> json = JsonDecoder().convert(v);
      _userInfo = UserModel.fromJson(json);
    }
  }


  get user => _getUser();
  void setUser(UserModel userModel){
    _userInfo = userModel;
    startLogout = false;
    reSave();
  }

  void reSave(){
    FBSave.saveObj(FBSave.KUserLoginInfoKey, user);
    Logger.log("pOfficeName--22: ${user.pOfficeName} - ${user.name}");
  }

  void clearUserInfo(){
    AppRequest.clearUserIcon();
    user.token = "";
    reSave();
  }

  bool userIsLogin(){
    String token = user.token;
    if (token == null || token.isEmpty || token.length == 0){
      return false;
    }
    return true;
  }

  UserModel _userInfo;
  UserModel _getUser() {
    if (_userInfo == null){
      _userInfo = UserModel();
    }
    return _userInfo;
  }

}

模型：

class UserModel {

  int loginType;
  String officeId;
  String officeIdname;
  String mobile;
  String name; //姓名 
  String username; //UM号
  String token;
  String exipreTime;
  String thridToken;
  String emNo;
  String sex;
  String emTypeName;
  int emTypeId;  // 员工员工类型:1正编 2金服 3集团 4外包 5游客  登录接口给你了
  String buDesc; //公司名
  String pnbrDesc; //岗位
  String businessUnit; //公司编码
  String adAccount; //ad域账号

  String pOfficeName;//常驻职场名称
  String pOfficeId;  //常驻职场ID

  UserModel({
    this.officeId,
    this.mobile,
    this.name,
    this.username,
    this.token,
    this.officeIdname,
    this.exipreTime,
    this.loginType,
    this.thridToken,
    this.emNo,
    this.sex,
    this.emTypeName,
    this.emTypeId,
    this.buDesc,
    this.pnbrDesc, 
    this.businessUnit,
    this.pOfficeName,
    this.pOfficeId,
    this.adAccount
  });

    factory UserModel.fromJson(Map<String, dynamic> json){
      return UserModel(
        officeId: json["officeId"],
        mobile: json["mobile"],
        name: json["name"],
        username: json["username"],
        token: json["token"],
        officeIdname: json["officeIdname"],
        exipreTime: json["exipreTime"],
        thridToken: json["thridToken"],
        loginType: json["loginType"],
        emNo: json["emNo"],
        sex: json["sex"],
        businessUnit: json["businessUnit"],
        emTypeName: json["emTypeName"],
        emTypeId: json["emTypeId"],
        buDesc: json["buDesc"],
        pnbrDesc: json["pnbrDesc"],
        pOfficeId: json["pOfficeId"],
        pOfficeName: json["pOfficeName"],
          adAccount: json["adAccount"]
      );
    }

    Map<String, dynamic> toJson() =>
        {
          'officeId': officeId,
          'mobile': mobile,
          'name': name,
          'username': username,
          'token': token,
          'officeIdname': officeIdname,
          'exipreTime': exipreTime,
          'thridToken': thridToken,
          'loginType': loginType,
          'emNo': emNo,
          'sex': sex,
          'emTypeName': emTypeName,
          'emTypeId': emTypeId,
          'buDesc': buDesc,
          'pnbrDesc': pnbrDesc,
          'businessUnit': businessUnit,
          'pOfficeName': pOfficeName,
          'pOfficeId': pOfficeId,
          'adAccount': adAccount
        };

    bool isMyWorkPlace(){
      if (this.officeId == pOfficeId){
        return true;
      }
      return false;
    }
}

import 'dart:async';
import 'dart:convert';
import 'package:shared_preferences/shared_preferences.dart';

typedef ValueCallBack<T> = Function(T value);

class FBSave{

  static const String KUserLoginInfoKey = "KUserLoginInfoKey";
  static const String KOffLineConfigJson = "KOffLineConfigJson";
  static const String KAppInfoVersionKey = "KAppInfoVersionKey";
  static const String KAdsKey = "KAdsKey";
  static const String KGuideUrlsKey = "KGuideUrlsKey";
  static const String KUserFistTimeUseKey = "KUserFistTimeUseKey";

  //实践
  static saveString(String key, String value) async {
    SharedPreferences share = await SharedPreferences.getInstance();
    await share.setString(key, value);
  }

  static Future<String> getString(String key) async {
    SharedPreferences share = await SharedPreferences.getInstance();
    return share.getString(key);
  }

  static void saveObj(String key, Object obj) async {
     assert(key != null && obj != null);
     SharedPreferences share = await SharedPreferences.getInstance();
     String value = JsonEncoder().convert(obj);
     await share.setString(key, value);
  }

  static void remove(String key) async {
    SharedPreferences share = await SharedPreferences.getInstance();
    await share.remove(key);
  }

  static Future<bool> containKey(String key) async {
    SharedPreferences sharedPreferences = await SharedPreferences.getInstance();
    return sharedPreferences.containsKey(key);
  }

}

使用：
1.判断是否登陆状态

if (!UserManager.instance.userIsLogin()) {
      Logger.log("没有登录：${this.context}");
      Navigator.of(this.context).pushNamedAndRemoveUntil("/loginpage", (Route route) => false);
      return;
    }
    Logger.log("用户已经登录过：${UserManager.instance.user.username}");

2.登陆成功赋值

UserManager.instance.setUser(loginUserModel);

3.退出登陆

 UserManager.instance.clearUserInfo();