UIView subclass which displays one of a given set of views at a time

EitherView.swift

final class EitherView: UIView {
    private let views: [UIView]

    init(views: [UIView]) {
        self.views = views
        super.init(frame: .zero)
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    func setEnabled(_ viewToEnable: UIView) {
        for knownView in views {
            if knownView == viewToEnable {
                viewToEnable.removeFromSuperview()
                addSubview(viewToEnable)

                viewToEnable.translatesAutoresizingMaskIntoConstraints = false
                viewToEnable.leadingAnchor.constraint(equalTo: self.leadingAnchor).isActive = true
                viewToEnable.trailingAnchor.constraint(equalTo: self.trailingAnchor).isActive = true
                viewToEnable.topAnchor.constraint(equalTo: self.topAnchor).isActive = true
                viewToEnable.bottomAnchor.constraint(equalTo: self.bottomAnchor).isActive = true
            } else {
                knownView.removeFromSuperview()
            }
        }
        self.setNeedsUpdateConstraints()
    }
}