带有子视图的 UIImageView，如 Facebook messenger

Question

我需要像 Facebook messenger 一样绘制 UIImageView（Facebook 个人资料加上 messenger 徽标）。
我需要一个带有子视图（信使徽标）的圆形 UIImageView 未剪辑。

有人有想法吗？

我的代码：

class CustomImageView : UIImageView {

    override init(frame: CGRect) {
        super.init(frame: frame)
        self.layer.cornerRadius     = frame.size.height/2
        self.layer.masksToBounds    = false
        self.clipsToBounds          = true
        self.contentMode            = UIViewContentMode.ScaleAspectFill
        self.userInteractionEnabled = true
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
}

let facebookProfil = CustomImageView(....)
let messengerLogo = CustomImageView(frame: CGRect(x: 0, y: 0, width: 15 , height: 15))
facebookProfil(messengerLogo)

我有这个

image result

Answer 1

class CustomImageView: UIImageView {

  let logoImageView = UIImageView()

  convenience init(image: UIImage, logo: UIImage) {
    self.init(image: image)
    self.logoImageView.image = logo
    self.clipsToBounds          = true
    self.contentMode            = UIViewContentMode.ScaleAspectFill
    self.userInteractionEnabled = true
    logoImageView.clipsToBounds = true
  }

  override func didMoveToSuperview() {
    self.layer.cornerRadius     = frame.size.height/2
    logoImageView.frame = CGRect(origin: self.frame.origin, size: CGSize(width: 50, height: 50))
    self.superview?.addSubview(logoImageView)
  }
}