iOS rounding UIView corners with draw enabled - ios

Question

When draw method is commented out inside the below code the view shows up circular, but when it is uncommented out the view shows up as a rectangle again. I could comment out the body of draw to have it just be an empty method, but the view would still show up as a rectangle.
I've tried moving the cornerRadius line to the end of draw, beginning of draw, and end of drawInnerCircle but to no avail. I was wondering if there was still a way to make the view rounded with draw method enabled?
import UIKit
class IconView: UIView {
override init(frame:CGRect) {
super.init(frame : frame)
self.backgroundColor = UIColor(red: 47/255, green: 49/255, blue: 53/255, alpha: 1.0)
self.layer.cornerRadius = self.frame.size.height / 2.0
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
override func draw(_ rect: CGRect) {
drawInnerCircle()
}
internal func drawInnerCircle() -> () {
let halfSize:CGFloat = min( self.frame.size.width/2, bounds.size.height/2)
let desiredLineWidth:CGFloat = 1 // your desired value
let circlePath = UIBezierPath(
arcCenter: CGPoint(x:halfSize,y:halfSize),
radius: CGFloat( halfSize - 3 ),
startAngle: CGFloat(0),
endAngle:CGFloat(M_PI * 2),
clockwise: true)
let shapeLayer = CAShapeLayer()
shapeLayer.path = circlePath.cgPath
shapeLayer.fillColor = UIColor.clear.cgColor
shapeLayer.strokeColor = UIColor(red: 96/255, green: 99/255, blue: 105/255, alpha: 1.0).cgColor
shapeLayer.lineWidth = desiredLineWidth
layer.addSublayer(shapeLayer)
}
}

Answer 1

Add the following:
self.layer.masksToBounds = true
below the line:
self.layer.cornerRadius = self.frame.size.height / 2.0
By the way there are some problem described by the above comments.