Cloudkit：CKNotificationInfo 徽章值永远不会减少

Question

我为 cloudkit 设置订阅通知。这是我的代码：

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"TRUEPREDICATE"];
    CKSubscription *subscription = [[CKSubscription alloc]
                                    initWithRecordType:recordType
                                    predicate:predicate
                                    options:CKSubscriptionOptionsFiresOnRecordCreation];
    CKNotificationInfo *notificationInfo = [CKNotificationInfo new];
    notificationInfo.alertLocalizationKey =@"New record in cloudKit";
    notificationInfo.shouldBadge = YES;
    notificationInfo.soundName = UILocalNotificationDefaultSoundName;
    notificationInfo.shouldSendContentAvailable = YES;
    subscription.notificationInfo = notificationInfo;
    CKContainer *container = [CKContainer defaultContainer];
    CKDatabase *publicDatabase = [container publicCloudDatabase];
    [publicDatabase saveSubscription:subscription
                   completionHandler:^(CKSubscription *subscription, NSError *error) {
                       if (!error)
                       {
                           NSLog(@"no error");
                       }
                       else
                       {
                           NSLog(@"error%@", error);
                       }

                       }];

并且工作得很好。问题是徽章，它们似乎 cloudKit 不会重置徽章编号，即使我将徽章计数设置为零，也会继续增加。

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    application.applicationIconBadgeNumber = 0;
}

当应用收到新通知时，从 0 变为 5（每新通知增加 1，下一次将是 6）

你们中的任何人都知道如何从 cloudkit（在 Objective-C 中）跟踪正确的徽章数量​​p>

Answer 1

这会有所帮助。

CKModifyBadgeOperation *badgeResetOperation = [[CKModifyBadgeOperation alloc] initWithBadgeValue:0];
[badgeResetOperation setModifyBadgeCompletionBlock:^(NSError * operationError) {
    if (!operationError) {
        [UIApplication sharedApplication].applicationIconBadgeNumber = 0;
    }
}];
[[CKContainer defaultContainer] addOperation:badgeResetOperation];

Answer 2

这是CloudKit won't reset my badge count to 0的副本

答案是： 您需要在处理完通知后执行 CKModifyBadgeOperation。

这是我在将所有通知标记为已读后调用的 Swift 函数。我将操作添加到 defaultContainer 而不是仅仅启动它 - 我想知道这有什么不同。

func resetBadgeCounter() {
    let badgeResetOperation = CKModifyBadgeOperation(badgeValue: 0)
    badgeResetOperation.modifyBadgeCompletionBlock = { (error) -> Void in
        if error != nil {
            println("Error resetting badge: \(error)")
        }
        else {
            UIApplication.sharedApplication().applicationIconBadgeNumber = 0
        }
    }
    CKContainer.defaultContainer().addOperation(badgeResetOperation)
}