How can I handle iOS push notification directly in my top view controller?

Question

All notifications are handled in AppDelegate, but usually they are needed in top controller to perform some actions on current view. How can I do this?

Answer 1

Make your UIVIewController conformed to protocol UIApplicationDelegate. And then get access to the top view controller using code answered here: Get the current displaying UIViewController on the screen in AppDelegate.m.

Let's say you need to get remote notification in your top UIViewController, then in AppDelegate you just write:

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
    (UIStoryboard.topViewController() as? UIApplicationDelegate)?.application?(application, didReceiveRemoteNotification: userInfo)
}