title: Does UIViewAnimationOptionAllowUserInteraction be applied to the views animated or the whole screen?
body: <p>According to documentation this call </p>
  
  <pre><code>[UIView animateWithDuration:0.3 animations:^{
      someView.alpha = 1.0;
  }];
  </code></pre>
  
  <p>is equivalent to</p>
  
  <pre><code> [UIView animateWithDuration:0.3 delay:0.0 options:0 animations:^{
       someView.alpha = 1.0;
   } completion:nil];
  </code></pre>
  
  <p>– thus not passing along the UIViewAnimationOptionAllowUserInteraction option. What happens if this option is not added? </p>
  
  <p>Will all views in the animation (in this example <code>someView</code>) not receive any user interaction or does it apply to the whole screen?</p>
  
  <p>All I find in the documentation is </p>
  
  <blockquote>
    <p>UIViewAnimationOptionAllowUserInteraction<br>
    Allow the user to interact with views while they are being animated.</p>
  </blockquote>