title: react-native android build: package does not exist
body: <p>I have received from somebody a demo react-native application that is using a native module.</p>
  
  <p>This native module includes the following import statement:</p>
  
  <pre><code>import com.xxx.yyy.zzz;
  </code></pre>
  
  <p>The demo build runs successfully on my Windows PC and works fine.  </p>
  
  <p>I am trying to use the same native module in own application, so I did the same setup in the <code>android\app\src\main\java\com\&lt;app-name&gt;\*</code> files that was done in the demo.</p>
  
  <p>However, when I run the build of my app I get the following error for the above statement:</p>
  
  <pre><code>error: package com.xxx.yyy.zzz does not exist
  </code></pre>
  
  <p>Any idea what is the reason for this error?</p>
  
  <p>(One difference between my app and the demo is that the demo is using only a single native module, while my app is using multiple modules. Not sure why this should make a difference. I am just trying to find a reason for my problem...)</p>