Home > DeveloperSection > Interviews > What is the use of controller object UIApplication?

Posted on    August-14-2015 12:00 AM

 iPhone iPhone  Ios  Objective C 
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Mikki Halpin
Mikki Halpin

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Posted on    August-14-2015 12:00 AM

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.)


Modified On Apr-16-2016 02:14:26 AM

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