How to enable a clear button action in UITextField (swift)?

Question

I'm pretty new to Swift and I have a problem that I don't know how to solve. So, I have a UITextField where I have a limit of 5 characters max in the text field and I have no problems with stopping on fifth character, but the problem is that I can't clear text, because clear button probably consider to be a character in iOS.

Anyone can help me to solve this problem?

Here is my code:

func textField(textField: UITextField, 
          shouldChangeCharactersInRange range: NSRange, 
          replacementString string: String) -> Bool{

    if let count = textField.text?.characters.count {
        if count < 5 {
            print("\(count)")
            return true
        }
        else {
            return false
        }
    }
    return true
}

Thanks.

Answer 1

You need to check what the length of the text field would be, not what it currently is. Try this:

func textField(textField: UITextField, 
          shouldChangeCharactersInRange range: NSRange, 
          replacementString string: String) -> Bool{

    let oldText: NSString = textField.text!
    let newText: NSString = oldText.stringByReplacingCharactersInRange(range, withString: string)

    let count = newText.length 
    if count <= 5 {
         print("\(count)")
         return true
    } else {
         return false
    }
}

Note: I'm not fluent in Swift. There may be a syntax error or two in this code.