一、通过添加UIView添加Extension方法添加切指定角圆角操作
1. UIRectCorner 传递相应的枚举类型
public struct UIRectCorner : OptionSet {
public init(rawValue: UInt)
public static var topLeft: UIRectCorner { get }
public static var topRight: UIRectCorner { get }
public static var bottomLeft: UIRectCorner { get }
public static var bottomRight: UIRectCorner { get }
public static var allCorners: UIRectCorner { get }
}
2、根据上面的枚举然后选择想要切的圆角位置
[UIRectCorner.topRight, .topLeft, bottomLeft]
// 切圆角相应的处理操作
extension UIView {
/// 切圆角处理操作
///
/// - Parameters:
/// - width: UIView 宽度
/// - height: UIView 高度
/// - corners: UIRectCorner 传递枚举数组 [] 例如： [UIRectCorner.topRight, .topLeft]
/// - cornerRadii: CGSize 类型
func clickCorner(width: CGFloat, height: CGFloat, corners: UIRectCorner, cornerRadii: CGSize) {
let maskBezier = UIBezierPath.init(roundedRect: CGRect.init(x: 0, y: 0, width: width, height: height), byRoundingCorners: corners, cornerRadii: cornerRadii)
let maskLayer = CAShapeLayer.init()
maskLayer.frame = CGRect.init(x: 0, y: 0, width: width, height: height)
maskLayer.path = maskBezier.cgPath
self.layer.mask = maskLayer
}
}
