title: UICollectionViewCell with images
body: <p>rI'm using a UICollectionView to display some images from the Web.
  It works perfectly, but I have a problem with the size of the UIImageView containing my images...</p>
  
  <p>I would like to fixe the width of each UIImageView, but the height will be adjust automatically to display a good resolution.</p>
  
  <p>My question is: is it possible, after downloaded the image from the Web, get the height of my image and then, set the height programmatically in this method:</p>
  
  <pre><code>-(CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath;
  </code></pre>
  
  <p>Thank you for your help.</p>
  
  <p>Regards,
  Lapinou.</p>