Implementing UITextFieldDelegate with Swift

Question

I have my ViewController class which implements UITextFieldDelegate. I have no auto complete for the funcs such as textFieldShouldBeginEditing. Is this a bug in XCode 6?

Answer 1

Xcode 6 (Beta 1) is not currently supporting autocomplete for non-implemented protocol methods/properties (for Swift).

Your best bet is to <CMD> - click on the protocol that isn't yet fully implemented to see what you're missing.

Answer 2

Swift 4:

@IBOutlet weak var yourNameTextField: UITextField! {
        didSet {
            yourNameTextField.delegate = self
        }
}


extension YourNameViewController: UITextFieldDelegate {
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        switch textField {
        case yourNameTextField:
            yourNameTextField.resignFirstResponder()
        default:
            break
        }
        return true
    }

    func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {
        return true
    }
}

Answer 3

A bit more swifty is ...

@IBOutlet weak var nameTF: UITextField! { didSet { nameTF.delegate = self } }

Answer 4

I spent a long night trying to fix this and the problem was that my coworker implemented all the logic in textFieldShouldBeginEditing instead of textFieldDidBeginEditing and sometimes textFieldShouldBeginEditing was not called when I used the first responder between TextFields ...

Answer 5

Swift 3.0.1

 // UITextField Delegates
    func textFieldDidBeginEditing(_ textField: UITextField) {
    }
    func textFieldDidEndEditing(_ textField: UITextField) {
    }
    func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
        return true;
    }
    func textFieldShouldClear(_ textField: UITextField) -> Bool {
        return true;
    }
    func textFieldShouldEndEditing(_ textField: UITextField) -> Bool {
        return true;
    }
    func textField(_ textField: UITextField, shouldChangeCharactersIn range: NSRange, replacementString string: String) -> Bool {
        return true;
    }
    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        textField.resignFirstResponder();
        return true;
    }

Answer 6

// MARK:- ---> Textfield Delegates

func textFieldDidBeginEditing(textField: UITextField) {

    print("TextField did begin editing method called")
}

func textFieldDidEndEditing(textField: UITextField) {

    print("TextField did end editing method called\(textField.text)")
}

func textFieldShouldBeginEditing(textField: UITextField) -> Bool {

    print("TextField should begin editing method called")
    return true;
}

func textFieldShouldClear(textField: UITextField) -> Bool {

    print("TextField should clear method called")
    return true;
}

func textFieldShouldEndEditing(textField: UITextField) -> Bool {
    print("TextField should end editing method called")
    return true;
}


func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
    print("While entering the characters this method gets called")
    return true;
}


func textFieldShouldReturn(textField: UITextField) -> Bool {

    print("TextField should return method called")
    textField.resignFirstResponder();
    return true;
}