ionic3页面跳转放在post回调函数里面报错

去玩儿 · 发表于 2018-4-3 17:39:25

  private headers = new Headers({'Content-Type': 'application/json'});

this.http.post("http://localhost:16710/api/values/GetToken",
      JSON.stringify({userName: this.UserInfo.userName,passWord: this.UserInfo.passWord}),
      {headers:this.headers})
.map(res => res.json())
   .subscribe(
   function(data){
      console.log(data);
   this.navCtrl.push(TabsPage);//这里报错，提示：ERROR TypeError: Cannot read property 'push' of undefined
   },function(err){             //但是把页面跳转的代码放到post外面就可以
      this.UserInfo.userName='';
      this.UserInfo.passWord='';
      console.log('登录失败');
   }

   );