title: UITableView async image dynamic height jumping
body: <p>I'm currently working on a project where I need to display a Facebook like feed with (depending on uploaded or not) a imageview and multiline label. 
  I already created a custom UITableViewCell, and the text content is showing correctly and changing the height of the cell with autolayout. But when a image is loaded into the imageview (with dynamic height), the tableview starts to jump, probably because the cell sizes are changing. I'm using SDWebImage to load the images.</p>
  
  <p>Is there any way to fix this issue? </p>
  
  <p><b>SOLUTION:</b><br>
  What we did is pre-load the images. Then build the tableview and cells. </p>
  
  <p>Below my custom cell layout in the interface builder, the small stroke on the bottom is the dynamic image:
  <a href="https://i.stack.imgur.com/NGpYo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NGpYo.png" alt="Custom cell "></a></p>