I've been playing around with the iPad SDK looking for ways to improve my current iPhone app. I've got a couple place where I think the new "SplitView" would look pretty good. My question is if it's possible to navigate to a "SplitView" with my current navigation based application? Mainly I'm not sure how to push that SplitViewController onto my current stack of views. Any thoughts?
It should always be the root controller according to Apple.
The split view controller’s view should always be installed as the root view of your application window. You should never present a split view inside of a navigation or tab bar interface.
You can use a UISplitViewController in a UITabBarController without any problems. I have not attempted to push a UISplitViewController into an UINavigationController however.
(At least) with iOS 8 (which runs on any ipad except the first one) it's possible to use a "present modally"-segue to display a splitviewcontroller.
Drawback is that an existing navigation bar isn't displayed.
Check out the Multiple Detail Views sample app on Apple's Documentation, this could give you a good idea on how to deal with navigation structure and how to display views on the "splitViewController".
来源：https://stackoverflow.com/questions/2633532/navigate-to-a-splitviewcontroller