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

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