keyboard done key action swift iOS doesn't work
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 classclass MyViewController: UIViewController, UITextFieldDelegate
The last thing is set up your class to be a text field delegate:
textField.delegate = self