for loop through fetchedResultsController

Question

I need to loop through a fetchedResultsController but having some issues. Here is the code;

for (NSFetchedResultsController *singleResult in _fetchedResultsController) {
    //For logic
}

The warning is;

Collection expression type 'NSFetchedResultsController *' may not respond to 'countByEnumeratingWithState:objects:count:'

What is the correct way to do this?

Are you sure you need a loop? What are you trying to accomplish? — Mundi, May 31 '12 at 07:25

score 4 · Answer 1 · answered May 30 '12 at 19:15

4

You need to access a member of the _fetchedResultsController that is an iterateable type, such as NSArray or NSSet. For example, NSFetchedResultsController has a property called fetchedObjects that is an NSArray. I suspect this is the array you are looking to access. I am not terribly familiar with the NSFetchedResultsController, but here is a link to the class reference that should help you out the rest of the way

answered May 30 '12 at 19:15

Dan F

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aka `for (NSManagedObject *result in _fetchedResultsController.fetchedObjects)` – Matthias Bauch May 30 '12 at 19:19

for loop through fetchedResultsController

1 Answers1