An operation that marks push notifications as read by your app.
- iOS 8.0–11.0Deprecated
- macOS 10.10–10.13Deprecated
- Mac Catalyst 13.0–13.0Deprecated
- tvOS 9.0–11.0Deprecated
- watchOS 3.0–4.0Deprecated
If your app uses push notifications to track changes to records, you can use this operation object to note which push notifications do not need to be processed again.
If you assign a completion block to the
completion 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.