Hope there is not an answer yet (I've checked). Can I introduce a login View in my application that enables a SplitView by using a button or something? I've checked MGSplitViewController, but I'd like to use something more light and minimal. If it's not possible, can I introduce a login View in my DetaiView that enables a TableView?
You can transition between arbitrary view controllers in iOS. The usual ways are using modal presentation (I like to present splash screens with a cross-dissolve animation to the root view controller of the app), or pushing/popping with navigation controllers. You can also programatically swap between multiple views in a view controller via setting the "view" property.