title: How to customize dialog with up arrow
body: <p>I need to develop a dialog similar to the one in the image, and I don't know what is the best approach (I'm a newbie):</p>
  
  <p><a href="https://i.stack.imgur.com/kUoz5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/kUoz5.png" alt="Sample dialog"></a></p>
  
  <p>Which approach do you consider to be the best? </p>
  
  <p>Define one custom dialog and define the custom layout (up arrow) in some way?
  Define one image with 9-patch and use it as an imageView with text inside?</p>
  
  <p>Thanks a lot in advance :)</p>