handling application badge number for my iphone app for apple push notification

Question

I am sending notifications from server side to apns server,i was facing a small problem while handling badge,my badge number should be reduced if user has seen the notification in notification center, if app is already running no need of badge i think so, but always my badge number is "1"

from my server side i am sending badge="1".how to inform to server my app has particular badge number, how to know my badge number.

        - (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
     {
 NSLog(@"%@",userInfo);
UIApplicationState state = [application applicationState];
[[UIApplication sharedApplication]setApplicationIconBadgeNumber:1];
if (state == UIApplicationStateActive) {
    [[UIApplication sharedApplication]setApplicationIconBadgeNumber:0];





    NSString *message = [[userInfo valueForKey:@"aps"] valueForKey:@"alert"];
    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@""
                                                        message:message
                                                       delegate:self
                                              cancelButtonTitle:@"Ok"
                                              otherButtonTitles: nil];
    [alertView show];
    [alertView release];

}

}

Answer 1

Usually in all apps, the unread notification counts are maintained in the server. When the server sends a push notification to a particular device token server sends the badge count along with the payload.

Your server logic needs to keep track of the proper badge count and send it appropriately.

{
    "aps" :  
    {
        "alert" : "Your notification message",
        "badge" : badgecount ,
        "sound" : "bingbong.aiff"
    }
}

and instead in your code [[UIApplication sharedApplication]setApplicationIconBadgeNumber:1]; use

badge_value+=[[[userInfo objectForKey:@"aps"] objectForKey:@"badge"]intValue];
    [UIApplication sharedApplication].applicationIconBadgeNumber = badge_value;

where, badge_value is an integer that stores the badge value.