title: Android: drawable resolutions
body: <p>I've been through <a href="https://stackoverflow.com/questions/1660650/different-drawable-resolutions">this post</a> (and others) as well as through the <a href="http://developer.android.com/guide/practices/screens_support.html" rel="nofollow noreferrer">documentation</a> about supporting different screen resolutions in Android, but I couldn't find a clear answer to a (simple) question:</p>
  
  <p>Is it ok to just use "res/drawable" for images in an android app?</p>
  
  <p>Background: The only images that are needed in this specific app are the app icon itself and an icon for a notification, there won't be any images in any layout.<br />So in my understanding, if no "hdpi"-, "mdpi"- and "ldpi"-folders are found, Android will use "res/drawable" as the fallback.<br />As the only pitfall with different screen-resolution seems to be that Android will scale images for a specific resolution if no special one is found, this should only be a problem when UPscaling, because the image will get blurry. But if I provide all "hdpi"-images in "res/drawable" (instead of 3 different ones), won't Android just DOWNscale those images if the size is too big?<br />If that's true, I could save some APK-space by just a third of the images.</p>
  
  <p>Follow-Up question: I read that for API-level 3 a dir by the name "drawable-v3" is required. Is that true or is "drawable" the fallback for this API-level also?</p>
  
  <p>Any hint is appreciated.</p>