Setting an ellipsis changing from 1 to 3 dots

Loading elipsis animation.swift

let animationDelay = 0.5 // tweak this to speed up / slow down animation

var hiddenDots = 3

func animateDots() {
  if let str = label.text {
    let range = NSRange(location: str.count - hiddenDots, length: hiddenDots)
    let string = NSMutableAttributedString(string: str)
    string.addAttribute(.foregroundColor, value: UIColor.clear, range: range)
        
    label.attributedText = string
    hiddenDots -= 1
    if hiddenDots < 0 {
      hiddenDots = 3
    }
  }

  DispatchQueue.main.asyncAfter(deadline: .now() + animationDelay) { [weak self] in
    self?.animateDots()
  }
}