Format UITextField text without having cursor move to the end

Question

I am trying to apply NSAttributedString styles to a UITextField after processing a new text entry, keystroke by keystroke. The problem is t

Answer 1

This is a code working for swift 2. Enjoy it!

 func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
    let beginnig: UITextPosition =  textField.beginningOfDocument

    if let txt = textField.text {
        textField.text = NSString(string: txt).stringByReplacingCharactersInRange(range, withString: string)
    }

    if let cursorLocation: UITextPosition = textField.positionFromPosition(beginnig, offset: (range.location + string.characters.count) ) {
        textField.selectedTextRange = textField.textRangeFromPosition(cursorLocation, toPosition: cursorLocation)
    }

    return false
}

Note that last "if let" should always stay at the end of code.