■ View Controller Programming Guide for iOS
For information about structuring and managing your application’s user interface
■ View Programming Guide for iOS.
For information about presenting and animating your user interface
■ Model Object Implementation Guide
discusses basic issues of subclass design and implementation,
views are usually connected to view controllers, which manage events and otherwise take the controller role in the MVC model.
is a direct descendent of NSObject. That means it doesn’t get any of the functionality of UIResponder or UIView, which you find in most other UIKit objects. It’s also the parent object of all the other view controllers we’ll discuss. Practically, this means that the lessons learned here also apply to all the other controllers.
”iPhone and iPad in Action“图书中的例子是很好的参考，熟悉了这个，对于整个的程序流程就很了解了
Event and action例子