I want to save Event and Image (for event) records. I want to show uploading progress in UI. Event is little object with text and location. Image is big object with photo as UII
The documentation for the CKModifyRecordOperation
states:
The operation object executes this block zero or more times for each record in the recordsToSave property.
So if the save action for an object takes little time, then it could happen that you won't get a progress callback. As far as I know there is no way to influence the frequency of progress notifications.