What is the use of controller object UIApplication?

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Controller object UIApplication is used without subclassing to manage the application event loop. It coordinates other high-level app behaviors.

Some of the behaviours of UIApplications:

- It works along with the app delegate object which contains app-level logic.

- Control the app’s response to changes in interface orientation.

- Register for remote notifications.

- Extend the execution of the app so that it can finish a task in the background.

- Schedule and cancel local notifications.

- Coordinate the reception of remote-control events.

(A major role of a UIApplication object is to handle the initial routing of incoming user events. It also dispatches action messages forwarded to it by control objects (UIControl) to the appropriate target objects.)

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What is the use of controller object UIApplication?

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