How to increase the icon number when the application is in the background

Question

I am using this code. Every thing works fine when a push notification appears, but the icon number does not increase when the application is in the background. How to solve this problem?

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.

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

    //UIApplication *application = [UIApplication sharedApplication];
    NSInteger badgeNumber = [application applicationIconBadgeNumber];// Take the current badge number
    //badgeNumber--;    // decrement by one
    [application setApplicationIconBadgeNumber:[[[launchOptions valueForKey:@"aps"]valueForKey:@"badge"]integerValue]];  // set ne badge number

    NSLog(@"userInfo :%@  %d",launchOptions,[[[launchOptions valueForKey:@"aps"]valueForKey:@"badge"]integerValue]);


    return YES;
}

Answer 1

When the application is in the background, the method didFinishLaunchingWithOptionsnever calls. To do something when your application is in the background, you need to implement your logic in AppDelegate's applicationDidEnterBackground: a method like.

- (void)applicationDidEnterBackground:(UIApplication *)application{

[UIApplication sharedApplication].applicationIconBadgeNumber = 2;
}

Answer 2

, . . , Push- . .

, push- 0. 0, 0 .

Answer 3

When submitting Push Notification, you need to add an icon value. Thus, an icon icon is required for each user device. There is something like this in php:

$body['aps'] = array(
'alert' => $message,
'sound' => 'default',
'badge'=> 10
);

where 10 is just the number displayed in the icon.