Clear UITextField Placeholder text on tap

Question

In Xcode4 I\'ve created some placeholder text for a UITextField and I\'d like it to clear when the user taps in the box.

So, in the Attributes Inspector for the text fie

Answer 1

The @etayluz 's solution is better (my opinion), because you don't need to worry about assigning placeholder'a text again. If you have custom textFields in different places of your app and want them to behave equally (as I need in my case) you can add this code to your custom TextField's class:

class CustomTextField: UITextField, UITextFieldDelegate {
     private func setup() {
    //do additional setup like attributedPlaceholder, inset, etc.
        self.delegate = self
    }

    override func awakeFromNib() {
        super.awakeFromNib()
        setup()
    }

//    MARK: UITextFieldDelegate methods

    func textFieldDidBeginEditing(textField: UITextField) {
        textField.setValue(UIColor.clearColor(), forKeyPath: "_placeholderLabel.textColor")
    }

    func textFieldDidEndEditing(textField: UITextField) {
        textField.setValue(UIColor.lightGrayColor(), forKeyPath: "_placeholderLabel.textColor")
    }
}

But if you need to have specific UITextFieldDelegate's methods for individual textField you DO need to implement this logic for it individually:

class LoginViewController: UIViewController, UITextFieldDelegate {

    @IBOutlet weak var emailTextField: CustomTextField!
    @IBOutlet weak var passwordTextField: CustomTextField!

override func viewDidLoad() {
        super.viewDidLoad()
textFields = [emailTextField, passwordTextField]
        for textField in textFields {
            textField.delegate = self
        }

//    MARK: UITextFieldDelegate methods

    func textFieldDidBeginEditing(textField: UITextField) {
        textField.setValue(UIColor.clearColor(), forKeyPath: "_placeholderLabel.textColor")
    }

    func textFieldDidEndEditing(textField: UITextField) {
        textField.setValue(UIColor.lightGrayColor(), forKeyPath: "_placeholderLabel.textColor")
    }
}