Although the email & password fields are empty, I'm moving to the next screen

Question

I'm not sure why, but the segue is triggered even when the email & password field are empty. How can it possibly be?

import UIKit
import Firebase

class RegisterViewController: UIViewController {

@IBOutlet weak var errorLabel: UILabel!
@IBOutlet weak var emailTextfield: UITextField!
@IBOutlet weak var passwordTextfield: UITextField!



@IBAction func registerPressed(_ sender: UIButton) {
    
    if let email = emailTextfield.text, let password = passwordTextfield.text {
        Auth.auth().createUser(withEmail: email, password: password) { authResult, error in
            if let e = error {
                self.errorLabel.text = e.localizedDescription
            } else {
                self.performSegue(withIdentifier: "RegisterToChat", sender: self)
            }
        }
    }
  }
}

Welcome to SO! You should [edit] your question to include all relevant code as text using proper code formatting. — Dávid Pásztor, Jul 15 '20 at 08:45

score 1 · Answer 1 · answered Jul 15 '20 at 08:47

The text property of UITextFields is not nil when the text field is empty. You need to check the isEmpty property of textField.text to check for that.

if let email = emailTextField.text, let password = passwordTextField.text, !email.isEmpty, !password.isEmpty { ...

Actually, UITextField.text can never be nil. The property is only Optional due to it being a legacy, Objective-C class. For more information on this, check Why is UITextField.text an Optional.

Although the email & password fields are empty, I'm moving to the next screen

1 Answers1