我最近使用Amazon SNS为我的IOS应用程序推送通知。

它运作良好，唯一遇到的问题是当我收到通知时，证卡号不会更新，这是我的实现方式：

首先，我在这里遵循示例 https://aws.amazon.com/articles/9156883257507082 这是教程中的示例代码。

    - (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {
    application.applicationIconBadgeNumber = 0;
    NSString *msg = [NSString stringWithFormat:@"%@", userInfo];
    NSLog(@"%@",msg);
    [[Constants universalAlertsWithTitle:@"Push Notification Received" andMessage:msg] show];
}


-(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    //Register for push notification
    application.applicationIconBadgeNumber = 0;
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:
     (UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound | UIRemoteNotificationTypeAlert)];
    if(launchOptions!=nil){
        NSString *msg = [NSString stringWithFormat:@"%@", launchOptions];
        NSLog(@"%@",msg);
        [[Constants universalAlertsWithTitle:@"Push Notification Received" andMessage:msg] show];
    }

    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

    // Override point for customization after application launch.

    Message_BoardViewController *boardViewController = [Message_BoardViewController new];
    UINavigationController *navigationController = [UINavigationController new];

    navigationController.navigationBar.translucent = NO;

    [navigationController pushViewController:boardViewController animated:NO];
    [boardViewController release];

    self.window.rootViewController = navigationController;
    [navigationController release];

    [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackOpaque];

    [self.window makeKeyAndVisible];

    // Logging Control - Do NOT use logging for non-development builds.
#ifdef DEBUG
    [AmazonLogger verboseLogging];
#else
    [AmazonLogger turnLoggingOff];
#endif

    [AmazonErrorHandler shouldNotThrowExceptions];

    return YES;
}

如你所见，从教程代码中可以看到

application.applicationIconBadgeNumber = 0;

因此很明显，每次都会变成0。

================================================== ====

我想知道更新徽章编号的标准方法是什么？

哪个方案是正确的？

1）通过这样的编程 application.applicationIconBadgeNumber = 0;

2）还是从服务器的有效载荷这样？

    $body = array(
'alert' => $message,
'sound' => 'sound.caf',
'badge' => $badge_count // Should be int type
);

================================================== ======

但是，我发现每个方法都有一个障碍，对于1），didReceiveNotification当应用程序在后台运行时，它不会触发，因此我无法做一些application.applicationIconBadgeNumber++;更新徽章编号的操作。

对于2），仅返回Amazon SNS服务

$body = array(
'alert' => $message,
); 

以及服务器如何才能知道徽章编号并将其添加到服务器有效负载中，看来我仍然需要将更新徽章编号发布到Amazon中didReceiveNotification并将其添加到有效负载中。但同样，它并不要求背景。

对IOS编程的新手感到抱歉，有经验的程序员会不会乐意指导我实施带有推送通知的徽章编号更新？谢谢。