title: Correct way to use adaptive icons in api 26+
body: <p>I managed to get my adaptive icons working by creating a folder <code>mipmap-anydpi</code> and placing suggested xml file there (<a href="https://developer.android.com/guide/practices/ui_guidelines/icon_design_adaptive.html#studio" rel="nofollow noreferrer">https://developer.android.com/guide/practices/ui_guidelines/icon_design_adaptive.html#studio</a>)</p>
  
  <p>This worked on api 26, but broke icons on android versions lower than that, they now show default android image. I managed to fix this by renaming my folder to <code>mipmap-anydpi-v26</code>, now icons work as expected on all supported apis.</p>
  
  <p>My question is this, are we supposed to do it like this? Will <code>-v26</code> make it also work on api 27+ or I have to create separate <code>-v2X</code> folder for each future api?</p>