IOS:AppComponents
lastmod 2014-02-19created 2014-02-193 edits
Components of an iOS app
An app is made up of the following components.
- Application object (UIApplication)
- Window object (UIWindow)
- App delegate (custom class; subclasses UIResponder.)
- Root view controller (subclass of UIViewController)
With these objects in place, the app can run and display its first screen.