title: objective c two nib files
body: <p>I have developed an app for the iPhone.  I have started trying to make my app universal and the way I am doing this is I have two nib files for each .m and .h  One for the iPad and one for the iPhone.  My idea was this would keep the code common but the layout unique.  This may not be the best way to do it but on paper I think it looks quite neat so its the route I've chosen,unless what I want to do is impossible.   I'm just wondering how do I actually navigate to a particular nib file be it the iPad or iPhone one?  Could someone supply some sample code?</p>