button action does not work for the first time tapped

Question

I have created a button in my storyboard. And created an action and outlet for it. I do some tasks in action of a button. But the button action is performed only from the second time.

Here's my code for the button action:

@IBAction func sendButtonTapped(sender: UIButton) {

        let domain = String(txtEmail.text!.characters.suffix(9))

        if txtEmail.text == "" || domain != "nu.edu.kz" {
            let alertController = UIAlertController(title: "Error", message: "Please enter your valid nu.edu.kz e-mail", preferredStyle: .Alert)
            let defaultAction = UIAlertAction(title: "Ok", style: .Cancel, handler: nil)
            alertController.addAction(defaultAction)

            self.presentViewController(alertController, animated: true, completion: nil)
        } else {

            if sendButton.currentTitle != "Reset Password has been sent" {

                FIRAuth.auth()?.sendPasswordResetWithEmail(self.txtEmail.text!, completion: { (error) in

                    print(error?.localizedDescription)

                    if error != nil {

                        print(error?.localizedDescription)
                    } else {

                        print("reset password email has been sent")

                        self.sendButton.setTitle("Reset Password has been sent", forState: .Normal)

                    }
                })
            }
        }
    }

And as I said before I have created an outlet for my button and textfield:

@IBOutlet weak var sendButton: UIButton!
@IBOutlet weak var txtEmail: UITextField!

P.S. I use Swift 2.3 here. Actually, I want to setTitle of the button to the new one. And this changes after tapping for the second time.

score 2 · Accepted Answer · edited May 23 '17 at 12:16

2

Please refer to this:

presentViewController:animated:YES view will not appear until user taps again

Probably want you want to do is call presentViewController(alertController, animated: true, completion: nil) explicitly on main thread

dispatch_async(dispatch_get_main_queue()) {
     self.presentViewController(alertController, animated: true, completion: nil)
}

edited May 23 '17 at 12:16

Community

1
1

answered Oct 14 '16 at 23:11

hacker_1989

303
4
15

I forgot to say what I am trying to do, sorry for that :) I want to setTitle to the new one. I will edit my question – Anuar Maratkhan Oct 15 '16 at 00:00
And this does worked for me. Thank you! Can you please explain how that helps? – Anuar Maratkhan Oct 15 '16 at 00:03

button action does not work for the first time tapped

1 Answers1