title: WindowLevel for UITextField's custom input view
body: <p>Hope to find a workaround on setting <code>windowLevel</code> for my custom <code>inputView</code>.</p>
  
  <p><strong>Scenario:</strong> Using <code>PKHUD</code> in the project. It's window level is <code>UIWindowLevelNormal + 1.0</code>. I can change this if needed. I'm showing a custom input view for my textfields. Everything works fine except only when I want to show <code>PKHUD</code> loading indicator, <code>UIAlertController</code> &amp; Custom InputView in the same place. </p>
  
  <p>Showing progress indicator while making server api call when the user entered the content in textfield and tapped "GO". I'm not resigning the keyboard.</p>
  
  <p>So, once I get an error from server, hiding the <code>PKHUD</code> &amp; showing the <code>UIAlertController</code>. But, <code>UIAlertController</code> shows behind my custom keyboard. Any help would be appreciated showing the <code>UIAlertController</code> before the custom keyboard input view without resigning it.</p>