title: Blur ViewGroup excluding one View
body: <p>I'm using <a href="https://github.com/wasabeef/Blurry" rel="nofollow noreferrer">Blurry</a> library to achieve the effect of blurred screen.</p>
  
  <p>How can I blur whole <code>ViewGroup</code> but except of one, particular <code>View</code>?
  I'm trying to achieve an effect similar to the following:</p>
  
  <p><a href="https://i.stack.imgur.com/vdodm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/vdodm.png" alt="enter image description here"></a></p>