Programmatically scroll a UIScrollView to the top of a child UIView (subview) in Swift

Question

I have a few screens worth of content within my UIScrollView which only scrolls vertically.

I want to programmatically scroll to a view contained somewhere in it\'s

Answer 1

You can use the following method , it works well for me

func scrollViewToTop( _ someView:UIView)
{

    let targetViewTop = someView.frame.origin.y
    //If you have a complicated hierarchy it is better to 
    // use someView superview (someView.superview?.frame.origin.y) and figure out your view origin
    let viewToTop = targetViewTop - scrollView.contentInset.top
    scrollView.setContentOffset(CGPoint(x: 0, y: viewToTop), animated: true)

}

Or you can have as an extension

 extension UIScrollView
{
       func scrollViewToTop( _ someView:UIView){
    let targetViewTop = someView.frame.origin.y
    let viewToTop = targetViewTop - self.contentInset.top
    self.setContentOffset(CGPoint(x: 0, y: viewToTop), animated: true)

   }
}

here are constraints for the scroll view

some screen shots

Screen Shots2