CloudKit：删除 CKSubscription 不起作用

Question

您好，我尝试取消对 CloudKit 的订阅。 到目前为止，我尝试了 CKModifySubscriptionsOperation 和 publicDB?.deleteSubscriptionWithID 的单一删除。我的 completionHandler 没有给我任何错误，并且有一个已删除订阅 ID 的数组。所以一切似乎都很好。

但是当我更改记录时，我仍然会收到推送通知。 如何删除订阅？

这是修改后的代码：

func cancelCubscription(subscription:Subscriptions){
    self._animationDelegate?.beginAnimation()
    var subs = [String]()
    subs.append(subscription.daySubSignature!)
    subs.append(subscription.hdpSubSignature!)
    subs.append(subscription.noteSubSignature!)
    subs.append(subscription.planerSubSignature!)
    subs.append(subscription.subjectSubSugnature!)
    subs.append(subscription.teacherSubSignature!)
    subs.append(subscription.tldSubSignature!)

    // Create a CKModifyRecordsOperation operation
    let subscriptionOperation = CKModifySubscriptionsOperation(subscriptionsToSave: nil, subscriptionIDsToDelete: subs)

    subscriptionOperation.modifySubscriptionsCompletionBlock = { (modifiedSubscriptions: [CKSubscription]?, deletedSubscriptionIDs: [String]?, error: NSError?) -> Void in
        guard error==nil else {
            dispatch_async(dispatch_get_main_queue(), { () -> Void in
                self._animationDelegate?.endAnimation()
                print(error!.localizedDescription)

                let title:String = "Alert_Cancel_CloudKit_Subscription_Error_Title".localized
                let message:String = error!.localizedDescription

                self._alertDelegate?.showAlert(title, message: message)
            })
            return
        }

        dispatch_async(dispatch_get_main_queue(), { () -> Void in
            self._animationDelegate?.endAnimation()
            print("")
            print("- * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - *")
            print("Unscribe to CloudKit subscription success!")

            let title:String = "Alert_Cancel_CloudKit_Subscription_Success_Title".localized
            let message:String = "Alert_Cancel_CloudKit_Subscription_Success_Message".localized

            self._alertDelegate?.showAlert(title, message: message)

            for sub in deletedSubscriptionIDs!{
                print("Deleted Subscription: \(sub)")
            }

            subscription.tldSubSignature = "null"
            subscription.daySubSignature = "null"
            subscription.hdpSubSignature = "null"
            subscription.noteSubSignature = "null"
            subscription.planerSubSignature = "null"
            subscription.subjectSubSugnature = "null"
            subscription.teacherSubSignature = "null"
            subscription.subscribed = false
            Subscriptions.editSubsripction(subscription, context: self.appDel.managedObjectContext)
        })
    }

    // Add the operation to an operation queue to execute it
    self._publicDB!.addOperation(subscriptionOperation)
}

我的订阅仍然有效： CloudKit Dashboard

我订阅时的日志：

- * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - *
CloudKit subscription success
teacherSubSignature = DE49AAFB-373C-49E5-8DC8-E81A977E7628
subjectSubSugnature = 3F06E054-D1B9-441E-AED3-CA947820D90C
daySubSignature = 8FF9AC02-F177-4381-AA8D-08AFFDB0A578
hdpSubSignature = 811ABA9A-D31B-4661-B783-B5DF033FC5F4
tldSubSignature = 1C07C661-02A9-48F3-9B92-08F41433E179
planerSubSignature = 1C32F1F0-3647-4F57-BDEF-215A28F69039
hdpSubSignature = 59216B52-1A21-4666-950A-F8CDE44591D2
Subscription Edited in Core Data

在删除订阅时： 错误=无

- * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - *
Unscribe to CloudKit subscription success!

Deleted Subscription: 8FF9AC02-F177-4381-AA8D-08AFFDB0A578
Deleted Subscription: 59216B52-1A21-4666-950A-F8CDE44591D2
Deleted Subscription: 811ABA9A-D31B-4661-B783-B5DF033FC5F4
Deleted Subscription: 1C32F1F0-3647-4F57-BDEF-215A28F69039
Deleted Subscription: 3F06E054-D1B9-441E-AED3-CA947820D90C
Deleted Subscription: DE49AAFB-373C-49E5-8DC8-E81A977E7628
Deleted Subscription: 1C07C661-02A9-48F3-9B92-08F41433E179
Subscription Edited in Core Data

Answer 1

好的，这不是最终答案，但需要写一些代码，而且 cmets 太短了。这是什么意思呢;第一种方法获取任何未完成的通知，第二种方法确保您与他们关注的页面相同。

在理想情况下删除订阅之前，您需要确保获得类似位置的信息。

免责声明这是演示代码；而且我还没有对它进行广泛的测试。但它应该可以工作。

func fetchSubsInPlace() {
    let container = CKContainer(identifier: "iCloud.ch")
    let publicDB = container.publicCloudDatabase

    publicDB.fetchAllSubscriptionsWithCompletionHandler({subscriptions, error in
        for subscriptionObject in subscriptions! {
            let subscription: CKSubscription = subscriptionObject as CKSubscription
            print("subscription \(subscription)")
        }
    })
}

func fetchNotificationChanges() {
    let operation = CKFetchNotificationChangesOperation(previousServerChangeToken: nil)

    var notificationIDsToMarkRead = [CKNotificationID]()

    operation.notificationChangedBlock = { (notification: CKNotification) -> Void in
        // Process each notification received
        if notification.notificationType == .Query {
            let queryNotification = notification as! CKQueryNotification
            let reason = queryNotification.queryNotificationReason
            let recordID = queryNotification.recordID

            print("reason \(reason)")
            print("recordID \(recordID)")
            // Do your process here depending on the reason of the change

            // Add the notification id to the array of processed notifications to mark them as read
            notificationIDsToMarkRead.append(queryNotification.notificationID!)
        }
    }

    operation.fetchNotificationChangesCompletionBlock = { (serverChangeToken: CKServerChangeToken?, operationError: NSError?) -> Void in
        guard operationError == nil else {
            // Handle the error here
            return
        }

        // Mark the notifications as read to avoid processing them again
        let markOperation = CKMarkNotificationsReadOperation(notificationIDsToMarkRead: notificationIDsToMarkRead)
        markOperation.markNotificationsReadCompletionBlock = { (notificationIDsMarkedRead: [CKNotificationID]?, operationError: NSError?) -> Void in
            guard operationError == nil else {
                // Handle the error here
                return
            }
        }

        let operationQueue = NSOperationQueue()
        operationQueue.addOperation(markOperation)
    }

    let operationQueue = NSOperationQueue()
    operationQueue.addOperation(operation)
}


}