A simple way to alternate between UIViewControllers in a UINavigationController stack, via a storyboard-compatible custom segue. (Also compatible with view controllers outside a navigation controller stack)

Based mostly on an example provided by jrwren.

Usage in code is the same as for any other segue. To use with storyboards,

1. Drag a new view controller into the storyboard, if necessary.
2. Control-drag to wire up a segue as usual.
3. In the inspector panel for the segue, choose Custom as the segue's style, and type RAFlipReplaceSegue as the segue's custom class.

Done!

To use a different built-in transition style while keeping the segue functionality, in RAFlipReplaceSegue.m change UIViewAnimationOptionTransitionFlipFromLeft to one of the following (from the UIView reference):

• UIViewAnimationOptionTransitionNone
• UIViewAnimationOptionTransitionFlipFromLeft
• UIViewAnimationOptionTransitionFlipFromRight
• UIViewAnimationOptionTransitionCurlUp
• UIViewAnimationOptionTransitionCurlDown
• UIViewAnimationOptionTransitionCrossDissolve
• UIViewAnimationOptionTransitionFlipFromTop
• UIViewAnimationOptionTransitionFlipFromBottom

If you need something more different, read the .m implementation—it's only ~30 lines!

If this helps at all, or is not quite what you need, drop me a tweet @ryanartecona.