Removing a document from iCloud (Swift)

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I have this function:

func removeCloudURLAtIndexPath(indexPath: NSIndexPath!) {
    if let documentURL = documentURLForIndexPath(indexPath) {
        collectionView!.performBatchUpdates({
            var mutableDocumentURLs = NSMutableArray(array: self.documentURLs)
            mutableDocumentURLs.removeObject(documentURL)

            self.documentURLs = NSArray(array: mutableDocumentURLs)

            self.collectionView!.deleteItemsAtIndexPaths([indexPath])
            },
            completion: { (success: Bool) -> Void in
                dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), { () -> Void in
                    let fileCoordinator = NSFileCoordinator(filePresenter: nil)
                    var fileCoordinationError: NSError?

                    fileCoordinator.coordinateWritingItemAtURL(documentURL, options: NSFileCoordinatorWritingOptions.ForDeleting, error: &fileCoordinationError, byAccessor: { newURL in
                        if fileCoordinationError != nil {
                            println("File coord error: \(fileCoordinationError)")
                        }

                        println("Deleting item at url \(newURL)")

                        var removeError: NSError?
                        NSFileManager.defaultManager().removeItemAtURL(newURL, error: &removeError)

                        if removeError != nil {
                            println("Remove error: \(removeError)")
                        }
                    })
                })

                self.collectionView!.reloadData()
        })
    }
}

which is called like this:

func didSelectTrashButton(button: UIBarButtonItem) {
    if isEditing {
        for indexPath in selectedIndexPaths {
            removeCloudURLAtIndexPath(indexPath)
        }
    }

    isEditing = false
}

But for some reason, my iCloud query adds it back to my model because it doesn’t get deleted properly. There are no errors printed from removeCloudURLAtIndexPath so I don’t have much to go on other than syntax, or, if I’m overlooking something which should/shouldn't be there.

In case it’s needed, here is the method my iCloud query notification calls:

func metadataQueryDidUpdate(notification: NSNotification) {
    iCloudQuery.disableUpdates()

    var newDocumentURLs = NSMutableArray()

    println("New results: \(iCloudQuery.results)")

    for result in iCloudQuery.results {
        if let metaDataItem = result as? NSMetadataItem {
            if let itemURL = metaDataItem.valueForAttribute(NSMetadataItemURLKey) as? NSURL {
                if !newDocumentURLs.containsObject(itemURL) {
                    newDocumentURLs.addObject(itemURL)
                }
            }
        }
    }

    println("New document URLs from update: \(newDocumentURLs)")

    documentURLs = newDocumentURLs

    iCloudQuery.enableUpdates()
}

asked 1 min ago

Adam Carter

1,038

Removing a document from iCloud (Swift)