static void LogNSNotifications(CFNotificationCenterRef center,
                               void *observer,
                               CFStringRef name,
                               const void *object,
                               CFDictionaryRef userInfo);

void LogNSNotifications(CFNotificationCenterRef center,
                        void *observer,
                        CFStringRef name,
                        const void *object,
                        CFDictionaryRef userInfo) {
    NSLog(@"\n\nNotification Logged:");
    NSLog(@"observer %@", [(__bridge NSObject *)observer debugDescription]);
    NSLog(@"object %@", [(__bridge NSObject *)object debugDescription]);
    NSLog(@"name: %@", name);
    NSLog(@"userinfo: %@", userInfo);
}

// then in your app delegate, call this function:

CFNotificationCenterAddObserver(CFNotificationCenterGetLocalCenter(),
                                NULL,
                                LogNSNotifications,
                                NULL,
                                NULL,  
                                CFNotificationSuspensionBehaviorDeliverImmediately);