UITextField Only Top And Bottom Border

Question

I currently have a regular border. I would like to only have a top and bottom border.

How do I accomplish this?

Using the UITextField<

Answer 1

Updated for Swift 5

var bottomBorder = CALayer()
bottomBorder.frame = CGRect(x: xVal, y: yVal, width: w, height: h)
bottomBorder.backgroundColor = UIColor.black.cgColor
searchBar.layer.addSublayer(bottomBorder)