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

Swift 3: Clean with AutoLayout (I'm using here PureLayout but you can also do it with common NSLayoutConstraint:

func makeUnderline(for textField: UITextField) {
    let borderLine = UIView()
    borderLine.backgroundColor = UIColor.black
    borderLine.autoSetDimension(.height, toSize: 1)
    textField.addSubview(borderLine)
    borderLine.autoPinEdgesToSuperviewEdges(with: UIEdgeInsets.zero, excludingEdge: .top)
}