iPhone - Nesting UIScrollViews for horizontal paging and vertical scrolling

This works out of the box with the SDK now. See Scrolling Madness and Apple's UIPageControl sample for guidelines on how to implement paged horizontal scrolling with a view controller for each page.

The nested UIScrollViews you add as subviews to your outer UIScrollView should have the same frame heights as the container. If you do this then the outer UIScrollView will pass through the vertical scrolling events to the subview. My app has three levels of UIScrollView and UIWebView nesting and I've found Cocoa is really intelligent about passing the events to the one I want as long as I set my frame sizes so that only one view is really scrollable (contentSize > frame) on each axis.

If you are trying something like Twitter profile UI I achieved this by putting header view and bottom scrollview in a a parent scrollview and underlaying another scrollview behind.

Underlaying scrollview is responsible for the adjusting content offsets of header and bottom. Its contentsize is also adjusted by the inner item heights.

It looks complicated when I tell, better see the code https://github.com/OfTheWolf/Twitterprofile