Glossary

• container view controller  

  A view controller that coordinates the interaction of other view controllers in order to present a specific type of user interface.



• custom view controller  

  A view controller that you define for the express purpose of displaying some content on the screen.



• detached nib file  

  A nib file that contains the view for a given view controller but not the view controller object itself. The view controller is instead loaded from a separate nib file or created programmatically.



• integrated nib file  

  A nib file that contains both a view controller and its associated view.



• modal view controller  

  A view controller presented on top of the current view controller using a special type of transition. Modal view controllers are often used to gather information from the user but may be used in other ways too.



• More view controller  

  A system-supplied view controller that manages the presentation of extra tabs in a tab bar interface. This view controller is displayed only when the number of tabs exceeds the number that can be displayed simultaneously on screen.



• navigation interface  

  The style of interface that is presented by a navigation controller’s view. A navigation interface includes a navigation bar along the top of the screen to facilitate navigating between different screens.



• navigation stack  

  The list of view controllers currently being managed by a navigation controller. The view controllers on the stack represent the content currently being displayed by a navigation interface.



• root view controller  

  The first view controller presented in a navigation interface, or the first view controller associated with a tab in a tab bar interface. A root view controller acts as an anchor for the given interface. Whereas most view controllers in a navigation or tab bar interface are added and removed dynamically, the root view controller of an interface is added at initialization time and can never be removed.



• tab bar interface  

  The style of interface that is presented by a tab bar controller’s view. A tab bar interface includes one or more tabs at the bottom of the screen. Tapping a tab changes the currently displayed screen contents.



• view controller  

  An object that descends from the UIViewController class. View controllers coordinate the interactions between a set of views and the custom data presented by those views.