Programmatically scroll a UIScrollView
You can scroll to some point in a scroll view with one of the following statements in Objective-C
[scrollView setContentOffset:CGPointMake(x, y) animated:YES];or Swift
scrollView.setContentOffset(CGPoint(x: x, y: y), animated: true)See the guide "Scrolling the Scroll View Content" from Apple as well.
To do slideshows with UIScrollView, you arrange all images in the scroll view, set up a repeated timer, then -setContentOffset:animated: when the timer fires.
But a more efficient approach is to use 2 image views and swap them using transitions or simply switching places when the timer fires. See iPhone Image slideshow for details.
If you want control over the duration and style of the animation, you can do:
[UIView animateWithDuration:2.0f delay:0 options:UIViewAnimationOptionCurveLinear animations:^{ scrollView.contentOffset = CGPointMake(x, y);} completion:NULL];Adjust the duration (2.0f) and options (UIViewAnimationOptionCurveLinear) to taste!