Round top corners of a UIView and add border

Question

I have the following code in a category that does rounding of corners. I would also like to draw a border. But the border is not shown on the rounded part of the corner.

Answer 1

this is probably a very late answer but I would just like to share the solution I came up with based on answers of different people from different similar questions. I got big help from Vojtech's answer above.

extension UIView {
    func EZRoundCorners(corners:UIRectCorner, radius: CGFloat) -> CAShapeLayer {
        let path = UIBezierPath(roundedRect: self.bounds, byRoundingCorners: corners, cornerRadii: CGSize(width: radius, height: radius))
        let mask = CAShapeLayer()
        mask.path = path.CGPath
        self.layer.mask = mask
        return mask
    }

    func EZRoundCornersWithBorder(corners:UIRectCorner, radius:CGFloat, color:UIColor, width:CGFloat) -> CAShapeLayer {

        let mask = self.EZRoundCorners(corners, radius: radius)

        // Add border
        let borderLayer = EZCALayer()
        borderLayer.path = mask.path // Reuse the Bezier path
        borderLayer.fillColor = UIColor.clearColor().CGColor
        borderLayer.strokeColor = color.CGColor
        borderLayer.lineWidth = width
        borderLayer.frame = self.bounds
        self.layer.addSublayer(borderLayer)
        return borderLayer
    }

    func removeEZLayers () {
        for layer in self.layer.sublayers! {
            if layer is EZCALayer {
                layer.removeFromSuperlayer()
            }
        }
    }
}

class EZCALayer : CAShapeLayer {
}

I inherited from CAShapeLayer so I can remove the border sublayers if I don't want to use them anymore.