title: Android: Blur listview behind a layout
body: <p>I have a listview and a layout that is in front of the listview. I want that layout to have as a background the blur of the listview that is in his back. Like in the image. The blur changes according to listview scrolling. How do I do this? </p>
  
  <p><a href="https://i.stack.imgur.com/H4CVQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/H4CVQ.png" alt=""></a></p>