title: How to set the vertical top alignment of UICollectionViewCell in UICollectionView. (Objective C)
body: <p>I have <code>UICollectionViewCells</code> of different height. I want to set the top alignment of each cell in <code>UICollectionView</code>. Below is the attachment: </p>
  
  <p><a href="https://i.stack.imgur.com/o7v9N.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/o7v9N.jpg" alt="enter image description here"></a></p>
  
  <p>I want <code>UICollectionViewCells</code> be like:</p>
  
  <p><a href="https://i.stack.imgur.com/p7V3E.png" rel="noreferrer"><img src="https://i.stack.imgur.com/p7V3E.png" alt="enter image description here"></a></p>