Round Top Corners of a UIButton in Swift

Question

I know I can round all four corners using:

 myBtn.layer.cornerRadius = 8
 myBtn.layer.masksToBounds = true

Since I only want to round two,

Answer 1

rounding is applied to corner's of view/Button .. , but coming to border of button , it is not applying correctly. can I have any solution for that? @

Here is the code that I have used , which is working (border) in iOS11.0 and above and not in below versions(<11.0)

if #available(iOS 11.0, *) {
        self.layer.cornerRadius = radius
        self.layer.maskedCorners = maskedCorners
    } else {
        let shapeLayer = CAShapeLayer()
        shapeLayer.position = self.center
        self.layer.masksToBounds = true
        self.clipsToBounds = true
        let bezirePath = UIBezierPath(roundedRect: self.bounds,
                                      byRoundingCorners: corners,
                                      cornerRadii: CGSize(width: radius, height: radius))
        shapeLayer.bounds = frame
        shapeLayer.path = bezirePath.cgPath

        self.layer.mask = shapeLayer

Answer 2

Adding Extension of UIButton:

extension UIButton{
    func roundedButton(){
        let maskPath1 = UIBezierPath(roundedRect: bounds,
            byRoundingCorners: [.topLeft , .topRight],
            cornerRadii: CGSize(width: 8, height: 8))
        let maskLayer1 = CAShapeLayer()
        maskLayer1.frame = bounds
        maskLayer1.path = maskPath1.cgPath
        layer.mask = maskLayer1
    }
}

Calling in viewDidAppear/viewDidLayoutSubviews:

btnCorner.roundedButton()

Button Corner OutPut:

Answer 3

Use this Code,

let path = UIBezierPath(roundedRect:viewTo.bounds, byRoundingCorners:[.TopRight, .TopLeft], cornerRadii: CGSizeMake(20, 20))
let maskLayer = CAShapeLayer()
maskLayer.path = path.CGPath
viewTo.layer.mask = maskLayer

hope its helpful

Answer 4

That's what helped me

extension UIView {

   func roundCorners(
      corners: UIRectCorner, 
      radius: CGFloat
   ) {
      let path = UIBezierPath(
         roundedRect: bounds,
         byRoundingCorners: corners,
         cornerRadii: CGSize(
            width: radius, 
            height: radius
         )
      )

      let mask = CAShapeLayer()
      mask.path = path.cgPath
      layer.mask = mask
   }
}

Pay attention to the fact that if you have layout constraints attached to it, you must refresh this as follows in your UIView subclass:

override func viewDidLayoutSubviews() {
   super.viewDidLayoutSubviews()

   yourButtonOutletName.roundCorners(
      corners: [.topLeft, .topRight],
      radius: yourButtonOutletName.frame.height / 2
   )
}