ios - 快速注册并登录

Question

您好，我正在尝试一个简单的应用程序注册，完成后，转到主视图，但是当我尝试转到 HomeView 时，我的应用程序崩溃了

这是代码

@IBAction func Registrar(sender: AnyObject) {

        let userName = UserName.text!
        let userEmail = UserEmail.text!
        let medicRegistry = MedicRegistry.text!
        let specialty = Speciality.text!
        let country = Country.text!
        let city = Ciudad.text!
        let userPass = UserPassword.text!
        let repeatPass = RepeatPassword.text!



        if ( userName.isEmpty || userEmail.isEmpty || medicRegistry.isEmpty || speciality.isEmpty || country.isEmpty || city.isEmpty || userPass.isEmpty || userEmail.isEmpty ) {

            let alertView:UIAlertView = UIAlertView()
            alertView.title = "Sign Up Failed!"
            alertView.message = "Por favor llene todos los campos"
            alertView.delegate = self
            alertView.addButtonWithTitle("OK")
            alertView.show()
        } else if ( userPass != repeatPass)  {

            let alertView:UIAlertView = UIAlertView()
            alertView.title = "Sign Up Failed!"
            alertView.message = "Passwords doesn't Match"
            alertView.delegate = self
            alertView.addButtonWithTitle("OK")
            alertView.show()

           //NSUserDefaults.standarUserDefaults().setObject(id, forKey:"userId")
            //NSUserDefaults.standarUserDefaults().synchronize()
        }else if check == false{
            let alertView:UIAlertView = UIAlertView()
            alertView.title = "Fallo al Registrar!"
            alertView.message = "Debes aceptar los terminos y condiciones"
            alertView.delegate = self
            alertView.addButtonWithTitle("OK")
            alertView.show()


        }

        else {

            let url_servicio = "http://mydirection.php"

                let request = NSMutableURLRequest(URL: NSURL(string: url_servicio)!)
                request.HTTPMethod = "POST"
            let postString = "nombre=\(userName)&email=\(userEmail)&registro=\(medicRegistry)&esp=\(specialty)&pais=\(country)&ciudad=\(city)&contrasena=\(userPass)"
            request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
            let task = NSURLSession.sharedSession().dataTaskWithRequest(request) { data, response, error -> Void in
                if (error != nil){
                    print(error!.localizedDescription)
                }else{
                    let nsdata:NSData = NSData(data: data!)

                    do{
                        let json = try NSJSONSerialization.JSONObjectWithData(nsdata, options: NSJSONReadingOptions.MutableContainers)
                        let Id = json["id"] as! String
                        let c: String = ""


                        if (Id != c){
                            print (Id)
                 self.performSegueWithIdentifier("funciona", sender: self)
                        }
                    }
                    catch{
                        print("Error del JSON")

                    }
                }
            }
            task.resume()

                   }
        }
}

我设法打印 ID，但是当那时就崩溃了我是新手，我不知道出了什么问题感谢您的帮助。

Answer 1

答案就在错误消息中:“仅在主线程上运行”。

您的完成处理程序在后台运行，但尝试使用 segue 更改 UI。您应该将 performSegueWithIdentifier 分派(dispatch)回主线程。