title: viewDidLayoutSubviews for Custom UITableViewCell
body: <p>I want to animate a subview of a custom TableViewCell. To perform this animation, the cell needs the width of this subview, which is laid out by an auto-layout-constraint.</p>
  
  <p>However, when I use the animation-function in the cellForRowAtIndex function (<code>mycell.animate()</code>), the width is <code>0</code>, because the subviews are not laid out yet and the animation will not work.</p>
  
  <p>In a regular view, I would use <code>viewDidLayoutSubviews()</code>, because then the view is laid out, I can get the width and perform the animation. However, what's the equivalent function for a custom UITableViewCell?</p>
  
  <p>I tried the <code>willDisplay</code> delegate function of the TableView, but when I print out the width of the cells subview, it still says <code>0</code>...</p>