Class

CKFetchSubscriptionsOperation

An operation used to fetch existing subscriptions from iCloud.

Declaration

class CKFetchSubscriptionsOperation : CKDatabaseOperation

Overview

A CKFetchSubscriptionsOperation object retrieves CKSubscription objects (whose IDs you already know) from iCloud and can fetch all subscriptions associated with the current user.

You might fetch subscription objects so you can examine or modify their parameters; for example, to adjust the delivery options for push notifications generated by the subscription.

If you assign a completion block to the completionBlock property of the operation object, the completion block is called after the operation executes and returns its results to you. You can use a completion block to perform housekeeping chores related to the operation, but do not use it to process the results of the operation itself. Any completion block you specify should be prepared to handle the failure of the operation to complete its task, whether due to an error or an explicit cancellation.

Topics

Initializing the Operation Object

Getting All Subscriptions

class func fetchAllSubscriptionsOperation() -> Self

Returns an operation object that retrieves all of the user’s subscription objects in the current database.

Relationships

Inherits From

Conforms To