Reset scroll on UICollectionView

Question

I have a horizontal UICollectionView which works fine and scrolls. When I tap an item I update my data and call reloadData. This works and the new data

Answer 1

CGPointZero in my case shifted the content of the collection view because you are not taking in count the content inset. This is what it worked for me:

    CGPoint topOffest = CGPointMake(0,-self.collectionView.contentInset.top);
    [self.collectionView setContentOffset:topOffest animated:YES];