Swift: Rounded View with inner shadow - swift

Question

I am trying to implement the solution here (which I converted to Swift): How to create rounded UITextField with inner shadow
My code is as follows:
mobileInputView.layer.cornerRadius = 5.0;
let shadowLayer = CAShapeLayer()
shadowLayer.frame = mobileInputView.bounds;
// Standard shadow stuff
shadowLayer.shadowColor = UIColor(white: 0, alpha: 1).CGColor
shadowLayer.shadowOffset = CGSizeMake(0.0, 0.0)
shadowLayer.shadowOpacity = 1.0
shadowLayer.shadowRadius = 4
// Causes the inner region in this example to NOT be filled.
shadowLayer.fillRule = kCAFillRuleEvenOdd
// Create the larger rectangle path.
let path = CGPathCreateMutable();
CGPathAddRect(path, nil, CGRectInset(mobileInputView.bounds, -42, -42));
// Add the inner path so it's subtracted from the outer path.
// someInnerPath could be a simple bounds rect, or maybe
// a rounded one for some extra fanciness.
let someInnerPath = UIBezierPath(roundedRect: mobileInputView.bounds, cornerRadius:5.0).CGPath
CGPathAddPath(path, nil, someInnerPath)
CGPathCloseSubpath(path);
shadowLayer.path = path
//CGPathRelease(path);
mobileInputView.layer.addSublayer(shadowLayer)
//[[_textField layer] addSublayer:shadowLayer];
let maskLayer = CAShapeLayer()
maskLayer.path = someInnerPath
shadowLayer.mask = maskLayer
But the view ends up coming out like this:
The width of the component is correct, I can type until the edge of the screen, it's just the border that comes out a bad size. If I set the background colour of the view I can see the view itself is being sized correctly.
If I try using .frame instead of .bounds I get the same result.

Answer 1

A much simpler way to achieve this is to modify the UITextField directly without have the outlining UIView and the label:
let label = UILabel(frame: CGRectMake(1, 1, 125, 25))
label.text = "Mobile number:"
label.textAlignment = NSTextAlignment.Right
mobileNumber.leftView = label
mobileNumber.leftViewMode = UITextFieldViewMode.Always
mobileNumber.borderStyle = UITextBorderStyle.Bezel;
mobileNumber.layer.borderWidth = 1.0
mobileNumber.layer.borderColor = UIColor.grayColor().CGColor
mobileNumber.layer.cornerRadius = 5.0