iOS change app delegate in different class

[tiaan3365]

Good day all

I would like to know if you can change a method in my app delegate on an event in another class.

I basically want to add a local notification to the didenterbackground method on a time set on another form.

I hope someone could help.

 

[KoolStar]

That method call is a response from UIApplication and thus only calls in the app delegate. If you want another class to react to the enter background you can have it register a selector on the notification center.

[[NSNotificationCenter defaultCenter] addObserver: self
                                         selector: @selector(handleEnteredBackground:) 
                                             name: UIApplicationDidEnterBackgroundNotification
                                           object: nil];

- (void)handleEnteredBackground:(NSNotification*)notification
{
    //Your Logic
}

NOTE: Be sure to remove the observer from your class when it is dealloced or the view is removed from the hierarchy.

The specific key is the :UIApplicationDidEnterBackgroundNotification

These are all notifications you can register in other classes with notification center.

UIApplicationDidBecomeActiveNotification
UIApplicationDidChangeStatusBarFrameNotification
UIApplicationDidChangeStatusBarOrientationNotification
UIApplicationDidEnterBackgroundNotification
UIApplicationDidFinishLaunchingNotification
UIApplicationDidReceiveMemoryWarningNotification
UIApplicationProtectedDataDidBecomeAvailable
ApplicationProtectedDataWillBecomeUnavailable
UIApplicationSignificantTimeChangeNotification
UIApplicationWillChangeStatusBarOrientationNotification
UIApplicationWillChangeStatusBarFrameNotification
UIApplicationWillResignActiveNotification