Custom Lottie Button on iOS

LottieButton.swift

/**
  let button = LottieButton(
    with: .zero,
    and: "success_animation",
    onTap: { view in
      print("Tapped")
    }
  )
*/
class LottieButton: LOTAnimationView {
  var tapHandler: ((LottieButton) -> Void)?

  required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
  }

  init(with frame: CGRect, and animationName: String, onTap: ((LottieButton) -> Void)? = nil) {
    super.init(frame: frame)
    tapHandler = onTap
    setAnimation(named: animationName)
    setupToucheHandling()
  }

  func setupToucheHandling() {
    let tapRecognizer = UITapGestureRecognizer(target: self, action: #selector(viewTapped(sender:)))
    tapRecognizer.delegate = self
    addGestureRecognizer(tapRecognizer)
  }

  @objc func viewTapped(sender: UIGestureRecognizer) {
    tapHandler?(self)
  }

}

extension LottieButton: UIGestureRecognizerDelegate {
  override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    alpha = 0.3
  }

  override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
    alpha = 1
  }

  override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
    alpha = 1
  }
}