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    <p>You say you've seen discussions of nesting UIScrollViews but don't want to go there - but that is the way to go! It works easily and well.</p> <p>It's essentially what Apple does in its PhotoScroller example (and the 2010 WWDC talk linked to in Jonah's answer). Only in those examples, they've added a whole bunch of complex tiling and other memory management. If you don't need the tiling etc. and if you dont want to wade through those examples and try and remove the bits related to it, the underlying principle of nesting UIScrollViews is actually quite simple:</p> <ul> <li><p>Create an outer UIScrollView and set its pagingEnabled = true. Add it to your main view and set its width and height to your main view's width and height.</p></li> <li><p>Create as many inner UIScrollViews as you want images. Set their width and height to your main view's width and height. Add them as subviews to your outer UIScrollView, each one next to the other, left to right.</p></li> <li><p>Set the content size of the outer UIScrollView to the total of the widths of all the inner UIScrollViews side by side (which is equal to [your main view's width]*[number of images]).</p></li> <li><p>Add your images' UIImageViews to the inner UIScrollViews, one UIImageView to each inner UIScrollView. Set each UIScrollView's content size to each UIImageView's size.</p></li> <li><p>Set min and max zoom scales for each inner UIScrollView and set each of the inner UIScrollView's delegate to your View Controller. In the delegate's viewForZoomingInScrollView, return the appropriate UIImageView for the UIScrollView that is passed. (To do this, just keep each of the UIImageViews in an NSArray and set the corresponding UIScrollView's tag property to the index of the appropriate UIImageView. You can then read the tag in the UIScrollView passed to viewForZoomingInScrollView and return the appropriate UIImageView from the NSArray).</p></li> </ul> <p>That's it. Works just like the photo app. </p> <p>If you have a lot of photos, to save memory you can just have two inner UIScrollViews and two UIImagesViews. You then dynamically flip between them, moving their position within the outer UIScrollView and changing their images as the user scrolls the outer UIScrollView. It's a bit more complex but the same principle.</p>
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    1. POUIScrollView image/photo viewer with paging enabled and zooming
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    1. COYeah nested scrollviews now work correctly. When I originally posted this question, support for iOS 3.2 was important, but nested scroll views had all sorts of issues.
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      1. USMike Weller
    2. COFigured you'd probably worked that out by now! But these older questions hang on at the top of Google search results, so thought it was worth adding.
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    3. COThis answer deserves way more up votes as of now: I just solved the whole problem with only a few lines of code using nested scroll views (on iOS 6 in my case).
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      1. USMichael Thiel
 

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