UICollectionView insert cells above maintaining position (like Messages.app)

Question

By default Collection View maintains content offset while inserting cells. On the other hand I\'d like to insert cells above the currently displaying ones so that they appea

Answer 1

if ([newMessages count] > 0)
{
    [self.collectionView reloadData];

    if (hadMessages)
        [self.collectionView scrollToItemAtIndexPath:[NSIndexPath indexPathForItem:[newMessages count] inSection:0] atScrollPosition:UICollectionViewScrollPositionTop animated:NO];
}

This seems to be working so far. Reload the collection, scroll the previously first message to the top without animation.