title: iOS removing view
body: <p>I have two views, viewA and viewB. I load viewB on top of viewA with </p>
  
  <pre><code>[self.view addSubview: viewB.view];
  </code></pre>
  
  <p>I wan't to remove viewB, but I don't how to do it. I tried</p>
  
  <pre><code>[self.view removeFromSuperview];
  </code></pre>
  
  <p>but this isn't working. How can I do this?</p>