In the SUP101 Xcode project, select File > New File.
Select Cocoa Touch Class, UIViewController subclass, and With XIB for user interface. Then click Next.
The "With XIB for user interface" option creates a NextStep Interface Builder (nib) file to go with the view controller and adds it to the SUP101 Xcode project.
In the next window, in File Name, enter DetailController.m, ensure that Also create DetailController.h is selected, and click Finish.
The new source files contain stub implementations of various methods.
Configuring the DetailController View
Goal: Add the user interface to the customer detail view and specify the outlets in the DetailController.m and DetailController.h files.