UITextField text change event

Question

How can I detect any text changes in a textField? The delegate method shouldChangeCharactersInRange works for something, but it did not fulfill my need exactly.

Answer 1

Swift 3 Version:

class SomeClass: UIViewController, UITextFieldDelegate { 

   @IBOutlet weak var aTextField: UITextField!


    override func viewDidLoad() {
        super.viewDidLoad()

        aTextField.delegate = self
        aTextField.addTarget(self, action: #selector(SignUpVC.textFieldDidChange), for: UIControlEvents.editingChanged)        
    }

   func textFieldDidChange(_ textField: UITextField) {

       //TEXT FIELD CHANGED..SECRET STUFF

   }

}

Don't forget to set the delegate.