React to Push Notification when app is closed

I'm using the "didReceiveRemoteNotification"-method to react to a Push Notification when the app is open.

But how can I react to a PN when the app is closed or in the background?

Is there a similar method that is triggered when a user clicks a PN when the app is closed and thus opens it?

 

Well, the only function that receives the PN that I know of is "didReceiveRemoteNotification", and that only happens when the app is running in either the foreground or background.

So sure, I've implemented the "applicationDidBecomeActive"-method and are able to react to a PN in both these states.

But what I really wanted was to be able to react to a PN when the app is entirely closed (not running in the background) and the user opens the app by clicking the PN (not the app-icon). Is this not possible?

 

Yes, that made things a bit more easy - my code was a little more convoluted. This is what I use now:

Code:

UIApplicationState state = [application applicationState];
if (  (state == UIApplicationStateBackground) || (state == UIApplicationStateInactive)  ) 
{
    // DO STUFF
}

Aha, found it! You need to check in the didFinishLaunchingWithOption for UIApplicationLaunchOptionsRemoteNotificationKey to get to the dictionary containing the PN-stuff, not in the didReceiveNotification.

Code:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{  
    NSDictionary* userInfo = [launchOptions valueForKey:@"UIApplicationLaunchOptionsRemoteNotificationKey"];
    NSDictionary *apsInfo = [userInfo objectForKey:@"aps"];
    if( [apsInfo objectForKey:@"alert"] != NULL)
    {
        // REACT TO PN IF APP WAS CLOSED
    }
..
}

Thanks for your help, jnoxx