How to disable/enable the return key in a UITextField?

Question

Is there a way to programmatically enable or disable the Return Key on the UIKeyboard? The closest I could find is enablesReturnKeyAutomatically, but that only will tell whether to disable it at all.

Answer 1

Maybe the following code segment helps:

textfield.enablesReturnKeyAutomatically = YES; 

This is publicly available in iPhone SDK in UITextInputTraits. Using this, return key will be disabled when no input text is available within text field.

Answer 2

You can override UITextField's hasText attribute to achieve this:

class CustomTextField : UITextField {     override public var hasText: Bool {         get {             return evaluateString(text)         }     } } 

Where evaluateString(_ text: String?) -> Bool checks against your needed input criteria, for example character count.

Of course this does only work in combination with enablesReturnKeyAutomatically = true set on the UITextField.

I am aware that my answer is neither timely nor written in Objective-C, but given that I have not been able to find an answer anywhere else and this question being routinely referred to in other threads, I think that here is the best place to post it.