How to clear NSFetchedResultsController?

Question

If I perform a fetch w/ a NSFetchedResultsController that returns objects and then want to clear the controller, i.e., have .fetchedObjects be an empty array, is there a method that can be called or do I have to perform another fetch that does not return any results?

Answer 1

You could set the fetch request of your fetched results controller to return nothing:

self.fetchedResultsController.fetchRequest.predicate = 
   [NSPredicate  predicateWithValue:NO];
[self.fetchedResultsController performFetch:nil]

Now self.fetchedResultsController.fetchedObjects should return an empty array.