Swift: Performing segue unexpectedly

Question

I've this action button used to validate a form, but I press this button, the alert is prompted and when the alert is dismissed (pressing "Ok"), it performs a segue to the main VC. I'd like to stay in the same VC after the button is pressed.:

@IBAction func loginButton(sender: AnyObject) {

        if self.password.text == "" || self.email.text == "" {

            self.displayAlert("Error", message: "Please insert email and password")
            print("if")

        }


        }


    func displayAlert(title: String, message: String) {

        // cria a mensagem de alerta
        var alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.Alert)

        // adiciona botao a mensagem de alerta
        alert.addAction((UIAlertAction(title: "Ok", style: .Default, handler: { (action) -> Void in

            //o que faz quando o botao da mensagem de alerta é apertado.
            self.dismissViewControllerAnimated(true, completion: nil)


        })))

        //apresenta a mensagem.
        self.presentViewController(alert, animated: true, completion: nil)



    }

Any ideas what I am doing wrong? Ps. I've checked the outlets and there is no trick with them.

Answer 1

Remove this line:

self.dismissViewControllerAnimated(true, completion: nil)

This is happens after the user pressed OK, and the alert view is already dismissed. What you did there, is to dismiss the view that showed the alert.

Answer 2

you should do something like this.

alert.addAction((UIAlertAction(title: "Ok", style: .Cancel, handler: nil))

and if you want to perform something after ok pressed , do that in handler.