Question

When app is in foreground, even if I set the applicationBadgeNumber to 0, when I quit the app, there’s still a “1” badge on my app, even whem I kill it, any ideas? When I open the notification when the app is in background, no problem at all!

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification 
    {   
        NSLog(@"%i", notification.applicationIconBadgeNumber); // Return 1
        notification.applicationIconBadgeNumber = 0;
        NSLog(@"%i", notification.applicationIconBadgeNumber); // Return 0

        UIApplicationState state = [application applicationState];

        if (state == UIApplicationStateInactive)
        {
            // Application was in the background when notification
            // was delivered.
        }
        else
        {
            UIAlertView *alert = [[UIAlertView alloc]
                                  initWithTitle:@"An item is asking your attention" message:nil delegate:nil
                                  cancelButtonTitle:@"Cancel" otherButtonTitles:@"Show me", nil];
            [alert show];
        }
    }

Answer 1

Where are you setting the applicationBadgeNumber? I think you are setting the notification badge number.

Try this:

 application.applicationIconBadgeNumber = 0;