How do you create a semi-transparent background for a UIView?

Question

I am creating a UIView containing some text that partially covers a UIImageView. I want the user to be able to read the text and still maintain a perspective on the image undern

Answer 1

Eventually you already have a color so you could use .colorWithAlphaComponent like this:

let exampleColor = UIColor.blackColor()
overlayView.backgroundColor = exampleColor.colorWithAlphaComponent(0.8)