How to set letter spacing of UITextField

Question

I have an app in which the user has to type a four digit pin code. All digits have to be at a set distance from each other.

Is there a way to do this if the PinTex

Answer 1

This is working fine in Swift 2.2. Hope this will help you for letter spacing in text field

override func viewDidLoad() {
 // Do any additional setup after loading the view.
        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(SignupVC.limitTextField(_:)), name: "UITextFieldTextDidChangeNotification", object: txtContactNumber)
}
 func limitTextField(Notif:NSNotification) {

    let limit=10;

    let attributedString = NSMutableAttributedString(string: txtContactNumber.text!)
    attributedString.addAttribute(NSKernAttributeName, value: 7, range: NSMakeRange(0, (txtContactNumber.text?.characters.count)!))
   // attributedString.addAttribute(NSFontAttributeName, value: font, range: NSMakeRange(0, count(textField.text)))
    attributedString.addAttribute(NSForegroundColorAttributeName, value: UIColor.blackColor(), range: NSMakeRange(0,(txtContactNumber.text?.characters.count)!))

    txtContactNumber.attributedText = attributedString
    if(txtContactNumber.text?.characters.count>limit)
    {
        txtContactNumber.text=txtContactNumber.text?.substringToIndex(limit)
    }
}