How to find a UICollectionViewCell's coordinates relative to the App Window

Question

Is it possible to translate a UICollectionViewCell's coordinates from being relative to the UICollectionView to being relative to the superview? So far I've been unable to translate a UICollectionViewCell's coordinates when touched to the superview. Here's what I've tried so far:

- (void)collectionView:(UICollectionView *)collectionView  
        didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
    UICollectionViewCell *cell = 
     [collectionView dequeueReusableCellWithReuseIdentifier:@"CollectionViewCell" 
                                               forIndexPath:indexPath];

    CGRect frame = CGRectMake(0.0, 
                              0.0,  
                              cell.frame.size.width, 
                              cell.frame.size.height);
    frame.origin = [cell convertPoint:cell.frame.origin 
                               toView:self.view];
}

I'd like to create a new frame which originates from the cell's position on the view, not in the UICollectionView. Any help would be great thanks.

Answer 1

Just in case if anybody looking for this, here is how it can be done in Swift:

let cellFrameInSuperview = collectionView.convertRect(collectionView.cellForItemAtIndexPath(indexPath)!.frame, toView: view)