title: Firebase Android - Skipping initialization
body: <p>I am currently implementing an Android app, which uses Firebase Cloud Messaging.
  I've implemented everything according to the tutorial on the Firebase page.</p>
  
  <p>However, whenever I try to run my app it seems like the Firebase initialization fails. Both, on an emulator and on a real device I get this debug message:</p>
  
  <pre><code>D/FirebaseApp: com.google.firebase.auth.FirebaseAuth is not linked. Skipping initialization.
  W/InstanceID/Rpc: Found 10010
  D/FirebaseApp: com.google.firebase.crash.FirebaseCrash is not linked. Skipping initialization.
  </code></pre>
  
  <p>It doesn't call the <code>InstanceIDListener</code>.
  And it strangely worked with the emulator once.</p>