Covers how to handle the size difference between the 3.5 and 4 inch iPhone and provides an example of a app with a toolbar. It also explains how to use tags to handle multiple calls invoking the same action method.
Begins to explore the UITabBarController, UiTableViewController and UINavigationController and their associated views from the perspective of inheritance.
Introduces the basic Core Graphics C data structures; explains how to create a view and add it as a subview to a superview; explores the relationship between several UIView properties.