Best practice to handle apple push notification when multiple users uses the same device

Question

My app is user specific. multiple users can uses the same device.My application has offline logout functionality. consider that one of my user (say user 1)logout offline.during that time my server send notification to the APNS for user1. after some time my device become online. during that time i am not logged in to the app. my question is that while my device is online(when network connection is available)and user1 is logged out will my app receive the push notification from APNS server(those sent for logged out user)

Answer 1

On logout: [[UIApplication sharedApplication] unregisterForRemoteNotifications];

On login:

[[UIApplication sharedApplication] registerForRemoteNotificationTypes:
        (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];