Changes

== Creating the Content Views and View Controllers ==

At this point, Xcode has created a minimal template for our application that contains a main window but no views or view controllers. The goal of this example is to provide two content views that the user can switch between using a tab bar. Each content view will need a view controller and a NIB file to contain the user interface. To create these, right click over the Classes category located in the Groups and Files panel on the left hand side of the main Xcode project window and select ''Add -> New File…''. This will display the template selection screen as illustrated in the following figure: