title: Should I keep images in both drawable and drawable-hdpi folder?
body: <p>I have searched for a time about drawable folder. But I want to make sure what I get is correct, so I create this question just to confirm it.</p>
  
  <p>The issue is: </p>
  
  <p>I have a.png ( hd image) in drawable-hdpi folder (and only in this folder).
  I run my app on mdpi devices.
  What will happen?
  From what i read on the internet. I think:
  1. Android will take a look at drawable folder.
  2. Because there is no a.png in this folder, Android will look at others folder and finally It will get a.png file in hdpi folder.
  3. Android will scale a.png image down 1.5 times to fit mdpi devices.
  4. The a.png image after scaling will be displayed on screen.</p>
  
  <p>Please correct me if I'm wrong.
  Thank you.</p>