How to input text using the buttons of an in-app custom keyboard

Question

I\'ve made an in-app custom keyboard that replaces the system keyboard and pops up when I tap inside a UITextField.

Here is my code:

Answer 1

I imagine something like this:

A new function to handle button event

func updateTextfield(sender: UIButton) {
    textField.text = (textField.text ?? "") + (sender.titleForState(.Normal) ?? "")
}

And after init your custom keyboard, register the buttons:

myCustomKeyboard.subviews
    .filter { $0 as? UIButton != nil } // Keep the buttons only
    .forEach { ($0 as! UIButton).addTarget(self, action: "updateTextfield", forControlEvents: .TouchUpInside)}