fetchLongLivedOperation(withID:completionHandler:)

Declaration

@preconcurrency func fetchLongLivedOperation(withID operationID: CKOperation.ID, completionHandler: @escaping  @Sendable (CKOperation?, (any Error)?) -> Void)

Parameters

• operationID:

  The operation’s ID.

• completionHandler:

  The closure to execute with the fetch results.

Discussion

The closure doesn’t return a value and takes the following parameters:

• The long-lived operation. If the operation completes, or your app or the system cancels it, this parameter is nil.

• An error if a problem occurs, or nil if CloudKit successfully retrieves the operation.

A long-lived operation is one that continues to run after the user closes your app. When a long-lived operation completes, the system calls its completion block to notify you.

After setting callback blocks on the returned long-lived operation, and starting the returned long-lived operation on an operation queue, the operation invokes all callbacks made while your app was closed.

See Also

Fetching Long-Lived Operations

• fetchAllLongLivedOperationIDs(completionHandler:)