I couldn't find a good answer anywhere. I am using a UINavigationController for my iphone app and everything is done 100% programmatically no xibs. So i am trying to port my app to ipad, i tried to use a UISplitViewController and link my existing tableView and etc.. Now, i am not sure where should i have the logic of my program separating the viewcontroller for iphone or ipad.. do i setup my main file to use a different appdelegate or i use a same appdelegae and have the condition set up there ?

now beside this, whenever i try to complile my app on the simulator it does not recognize the uisplitview and even the condition in which i check if the class exists.

can please someone put me in the right direction.. and remember i am not using xibs?