更改UIView图层-Swift

但我想像下面的图片一样排列

元素从右边排序!

imageView.trailingAnchor.constraint(equalTo: participantView.safeAreaLayoutGuide.trailingAnchor, constant: CGFloat(-(counter * widthX - 5 * counter)) ).isActive = true

我现在能做什么?

   let widthX = 30
   var counter = 0
   for x in element {

          guard let image = x.image else { continue }
          let urlX = URL(string: "...")
          let imageView = UIImageView()
          participantView.addSubview(imageView)

          imageView.translatesAutoresizingMaskIntoConstraints = false
          imageView.trailingAnchor.constraint(equalTo: participantView.safeAreaLayoutGuide.trailingAnchor, constant: CGFloat(-(counter * widthX - 5 * counter)) ).isActive = true
          imageView.topAnchor.constraint(equalTo: participantView.topAnchor, constant: 0).isActive = true
          imageView.bottomAnchor.constraint(equalTo: participantView.bottomAnchor, constant: 0).isActive = true
          imageView.widthAnchor.constraint(equalToConstant: 30).isActive = true
          imageView.backgroundColor = .white

          imageView.layer.cornerRadius = 15
          imageView.clipsToBounds = true
          imageView.contentMode = .scaleAspectFit
          imageView.layer.borderWidth = 1
          imageView.layer.borderColor = UIColor.lightGray.cgColor
          counter += 1

          imageView.kf.setImage(with: urlX)
   }