Get UIScrollView to scroll to the top

Question

UPDATE FOR iOS 7

[self.scrollView setContentOffset:
    CGPointMake(0, -self.scrollView.contentInset.top) animated:YES];

ORIGINAL

[self.scrollView setContentOffset:CGPointZero animated:YES];

or if you want to preserve the horizontal scroll position and just reset the vertical position:

[self.scrollView setContentOffset:CGPointMake(self.scrollView.contentOffset.x, 0)
    animated:YES];

Here is a Swift extension that makes it easy:

extension UIScrollView {
    func scrollToTop() {
        let desiredOffset = CGPoint(x: 0, y: -contentInset.top)
        setContentOffset(desiredOffset, animated: true)
   }
}

Usage:

myScrollView.scrollToTop()

For Swift 4

scrollView.setContentOffset(.zero, animated: true)

iOS 11 and above

Try to play around with the new adjustedContentInset (It should even work with prefersLargeTitles, safe area etc.)

For example (scroll to the top):

var offset = CGPoint(
    x: -scrollView.contentInset.left, 
    y: -scrollView.contentInset.top)

if #available(iOS 11.0, *) {
    offset = CGPoint(
        x: -scrollView.adjustedContentInset.left, 
        y: -scrollView.adjustedContentInset.top)    
}

scrollView.setContentOffset(offset, animated: true)