title: UIImageView Aspect Fill not filling view
body: <p>I selected Aspect Fill under View > Mode for my UIImageView in my XIB but it stubbornly shows the same sized image.</p>
  
  <pre><code>I                   I
  I                   I
  I   MY IMAGE HERE   I
  I                   I
  I                   I
  </code></pre>
  
  <p>i.e. there is blank space above and below <code>MY IMAGE</code>.</p>
  
  <p>What could I be doing wrong?</p>
  
  <p>==== UPDATE</p>
  
  <p>With a red backgroundColor:</p>
  
  <pre><code>RRRRRRRRRRRRRRRRRRRRR
  RRRRRRRRRRRRRRRRRRRRR
  I   MY IMAGE HERE   I
  RRRRRRRRRRRRRRRRRRRRR
  RRRRRRRRRRRRRRRRRRRRR
  </code></pre>
  
  <p>Shouldn't Aspect Fill make it more like the entire rectangle is filled by something like <code>MAG</code> where <code>MY I</code> and <code>E HERE</code> are off-screen.</p>