Apple push notification badge number

Question

I have developed server side application to maintain the badge number as increment or decrement after receiving new notification and delete after seeing notification it works fi

Answer 1

It will show until you set it to zero and you can do it with the following code:

    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0]

EDIT:
It is more common to set the badge number as you receive the notification, in either application:didReceiveRemoteNotification: or application:didFinishLaunchingWithOptions: methods of your UIApplicationDelegate class.

You can read more about it in the Local and Push Notification Programming Guide