CloudKit：删除CKSubscription不起作用 [英] CloudKit: delete CKSubscription is not working

问题描述

您好，我尝试取消CloudKit上的订阅。
到目前为止，我尝试了CKModifySubscriptionsOperation和publicDB？.deleteSubscriptionWithID的一次删除。我的completionHandler没有给我任何错误，还提供了一系列已删除的订阅ID。

Hello i try to cancel a subscription on CloudKit. So far i tried both CKModifySubscriptionsOperation and single removement by publicDB?.deleteSubscriptionWithID. My completionHandler gives me no error and an array of the deleted subscription ID's. So all seems to be ok.

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？

But when i change a record i still get a push notification. How to remove the subscriptions?

以下是更改后的代码：

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)
}

我的订阅仍处于活动状态：
CloudKit仪表板

my subscriptions are still active: CloudKit Dashboard

我在订阅时的日志：

- * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - *
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

并删除订阅：
错误= nil

and on delete subscription: error = nil

- * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - * - *
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

推荐答案

好的，这不是确定的答案，但是需要放一些代码，注释太短。这是什么意思呢;第一种方法可获取所有未完成的通知，第二种方法可确保您获得与它们关注相同的页面。

Ok, this isn't the definitive answer, but need to put some code down and the comments are too short. What does it all mean; the first method fetches any outstanding notifications, the second makes sure you the same page as regarding their attention.

在删除理想的订阅之前，您需要确保有类似的地方。

You need to make sure you got something like place before deleting the subscriptions ideally.

免责声明，这是演示码;而且我还没有对其进行广泛的测试。

Disclaimer this is demo code; and I haven't tested it extensively. But it should work.

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)
}


}

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