Extension to scroll a UIScrollView to any other view, leaving that view on top of the screen after scrolling.

ScrollView.swift

extension UIScrollView {

    func scrollToView(view:UIView, animated: Bool) {
        if let origin = view.superview {
            let childStartPoint = origin.convert(view.frame.origin, to: self)
            self.scrollRectToVisible(CGRect(x: 0.0,
                                            y: childStartPoint.y,
                                            width: 1.0,
                                            height: self.frame.height),
                                     animated: animated)
        }
    }

}