Can you embed a Split-View Controller in a UITabBarController? I have a UITabBarController in my appdelegate on the window, and I tried adding a segue to my split view controller, but when I press the correlating tab for the DetailViewController it just shows a blank screen? Is it possible to even have a split-view controller as a tab in a tabbarcontroller?
A UISplitViewController must be at the root of your controller hierarchy. From Apple's Split View Controllers documentation:
A split view controller must always be the root of any interface you create. In other words, you must always install the view from a UISplitViewController object as the root view of your application’s window. The panes of your split view interface may then contain navigation controllers, tab bar controllers, or any other type of view controller you need to implement your interface. Split view controllers cannot be presented modally