keyboard done key action swift iOS doesn't work

Question

I\'m new in stackoverflow, I have a problem with new swift code. I have custom the return button on keyboard with \"Done\", but when I tap on it, don\'t befall anything... H

Answer 1

textField.delegate = self

can be replaced by

This will create the necessary connections between your View, its component and will make the textFieldShouldReturn method work as expected.

Answer 2

You need to implement delegate method which is called when you hit done button:

func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    textField.resignFirstResponder()
    return true
}

You also need to conform to UITextFieldDelegate protocol:

// I assume you override UIViewController class. If not add UITextFieldDelegate to your class
class MyViewController: UIViewController, UITextFieldDelegate

The last thing is set up your class to be a text field delegate:

textField.delegate = self

Answer 3

The protocol methods have new signatures (Swift 4.1). IE:

func textFieldShouldReturn(_ textField: UITextField) -> Bool {
    textField.resignFirstResponder()
    return true
}

As the protocol methods are optional, using a wrong signature will silently fail.