[Desbrina]

I'm trying to convert a table view to a collection view. I have it display the cells fine but any changes made to them aren't being displayed until i leave the view/come back or scroll the cell off screen. The data comes from core data
The core data objects are updated using

    override func viewWillAppear(animated: Bool) {  
        var stepCount = 0.0  
        if let results = fetchedResultsController.fetchedObjects {  
            if results.count > 0 {  
                for i in 0...results.count-1 {  
                    if let userP : UserPet = results[i] as? UserPet {  
                    
                        let yesterday = userP.expLastUpdated  
                    
                        HealthKitManager().recentSteps(yesterday!) { steps, error in  
                            if let exp = userP.exp {  
                                let newExp = exp.doubleValue + steps  
                                userP.exp = newExp  
                                stepCount = steps  
                            }  
                        }                    
                        userP.expLastUpdated = NSDate()  
                        self.appData.saveContext()  
                    }  
                }  
            }  
        }  
    }

I have the following delegate methods for nsfetchedresultscontroller

private var blockOperations : [NSBlockOperation] = []  
  
    func controller(controller: NSFetchedResultsController, didChangeObject anObject: AnyObject, atIndexPath indexPath: NSIndexPath?, forChangeType type: NSFetchedResultsChangeType, newIndexPath: NSIndexPath?) {  
      
        NSLog("\(type)")  
        let tooManyEggs = UIAlertController(title: "Alert", message: "Type: \(type)", preferredStyle: .Alert)  
        let noActionEggs = UIAlertAction(title: "OK", style: .Cancel) { (alert: UIAlertAction!) -> Void in  
        }  
        tooManyEggs.addAction(noActionEggs)  
        presentViewController(tooManyEggs, animated: true, completion:nil)  
      
        switch type {  
        case .Insert:  
            guard let newIndexPath = newIndexPath else { return }  
            let op = NSBlockOperation { [weak self] in self?.collectionView?.insertItemsAtIndexPaths([newIndexPath]) }  
            blockOperations.append(op)  
            NSLog("Insert")  
          
        case .Update:  
            guard let newIndexPath = newIndexPath else { return }  
            let op = NSBlockOperation { [weak self] in self?.collectionView?.reloadItemsAtIndexPaths([newIndexPath]) }  
            blockOperations.append(op)  
            NSLog("Update")  
            let tooManyEggs = UIAlertController(title: "Alert", message: "Update", preferredStyle: .Alert)  
            let noActionEggs = UIAlertAction(title: "OK", style: .Cancel) { (alert: UIAlertAction!) -> Void in  
            }  
            tooManyEggs.addAction(noActionEggs)  
            presentViewController(tooManyEggs, animated: true, completion:nil)  
          
        case .Move:  
            guard let indexPath = indexPath else { return }  
            guard let newIndexPath = newIndexPath else { return }  
            let op = NSBlockOperation { [weak self] in self?.collectionView?.moveItemAtIndexPath(indexPath, toIndexPath: newIndexPath)}  
            blockOperations.append(op)  
            NSLog("Move")  
          
        case .Delete:  
                guard let newIndexPath = newIndexPath else { return }  
                let op = NSBlockOperation { [weak self] in self?.collectionView?.deleteItemsAtIndexPaths([newIndexPath]) }  
                blockOperations.append(op)  
                NSLog("Delete")  
          
        }  
    }  
  
    func controllerDidChangeContent(controller: NSFetchedResultsController) {  
        collectionView?.performBatchUpdates({  
            self.blockOperations.forEach { $0.start() }  
            }, completion: { finished in  
                self.blockOperations.removeAll(keepCapacity: false)  
        })  
    }  

The delegate for the nsfetchedresults controller is set to self
_fetchedResultsController?.delegate = self  
 
i know the
func controller(controller: NSFetchedResultsController, didChangeObject anObject: AnyObject, atIndexPath indexPath: NSIndexPath?, forChangeType type: NSFetchedResultsChangeType, newIndexPath: NSIndexPath?) {  
 
is being called but nothing is matching. I've printed the type variable which is giving me 'NSFetchedResultsChangeType'