轻松将 UIImage 转换为圆角
imageView.image = originalImage?.makeImageCornerRadius(8)
效果良好。无离屏渲染。
// UIImage
func makeImageCornerRadius(radius: CGFloat) -> UIImage
func makeImageCircle() -> UIImage
// UIImageView
convenience init(frame: CGRect, image: UIImage, radius: CGFloat)
convenience init(frame: CGRect, image: UIImage, cricle: Bool)