Avoid animation of UICollectionView after reloadItemsAtIndexPaths

Question

UICollectionView animate items after reloadItemsAtIndexPaths is called (fade animation).

Is there a way to avoid this animation?

iOS 6

Answer 1

Here is a Swift 3 version to performBatchUpdates without animation to a UICollectionView. I found this to work better for me than collectionView.reloadData() because it reduced cell swapping when records were inserted.

func appendCollectionView(numberOfItems count: Int){

        // calculate indexes for the items to be added
        let firstIndex = dataItems.count - count
        let lastIndex = dataItems.count - 1

        var indexPaths = [IndexPath]()
        for index in firstIndex...lastIndex {
            let indexPath = IndexPath(item: index, section: 0)
            indexPaths.append(indexPath)
        }

   UIView.performWithoutAnimation {

        self.collectionView.performBatchUpdates({ () -> Void in
            self.collectionView.insertItems(at: indexPaths)
        }, completion: { (finished) -> Void in

        })
    }
}