Chapter 3. View Controllers
The iPhone screen isn’t big by any measure. It’s just a few inches across by a few inches high. This diminutive size constrains programs by limiting a user’s physical viewport. Although your virtual worlds may be very large indeed, the small physical screen means that iPhone classes must cleverly expand their practical interaction space. In this chapter, you’re about to discover numerous ways to create virtual presentations that enlarge your application’s physical reality through the use of view controllers. You’ll discover how to use view controllers to build navigable worlds and how to connect to these classes using Interface Builder.
On the iPhone, view controllers centralize basic view management. ...