How to prevent a delivered NSUserNotification Popup from removing a previous Notification Popup

Question

I'm trying to get 2 notifications to pop up at once, stacked on top of eachother, but when I deliver the second notification, it pushes the first popup out of the display.

     NSUserNotification *notification = [[NSUserNotification alloc] init];
     notification.title = @"1";
     notification.informativeText = [NSString stringWithFormat:@"First Popup"];
     notification.soundName = NSUserNotificationDefaultSoundName;
     [[NSUserNotificationCenter defaultUserNotificationCenter] deliverNotification:notification];

     NSUserNotification *notification2 = [[NSUserNotification alloc] init];
     notification2.title = @"2";
     notification2.informativeText = [NSString stringWithFormat:@"Second Popup"];
     notification2.soundName = NSUserNotificationDefaultSoundName;
     [[NSUserNotificationCenter defaultUserNotificationCenter] deliverNotification:notification2];

Is there a flag or something I could set to stop the second popup from removing the first one from my display? (They both still exist in the notification center)

Answer 1

You have to enable notifications to show as Alerts in the Notifications in System Preference .

and then you can remove/dismiss the notifications as/if you want using:

- (void)removeDeliveredNotification:(NSUserNotification *)notification;

You can use Growl also for the purpose but i don't know if that will show notifications in notification center. I don't know any other way of doing this and will love to learn that.