title: Custom SDK - API level
body: <p>I've build a custom Android SDK off the master branch (8.1.x) successfully, but the SDK manager shows its API level as Q.
  I've tried setting <code>PLATFORM_SDK_VERSION</code> in <code>./build/make/core/version_defaults.mk</code> to several values (28, 50, etc.), but its still listed as Q.</p>
  
  <p>This is an issue, since I can't specify <code>compileSdkVersion Q</code> in the gradle files.</p>
  
  <p>I build the SDK by:</p>
  
  <pre><code>$lunch sdk-eng
  $make update-api 
  $make sdk
  </code></pre>
  
  <p>I use the custom build SDK by unpacking the resulting zip file to the filesystem, and specifying it in <code>local.properties</code>.</p>
  
  <p>Is this really the best way to use a custom SDK?
  How do I change the api level number?</p>