title: My application is connected to the firebase analytics but no user is shown online
body: <p>implementation 'com.google.firebase:firebase-core:16.0.0'</p>
  
  <pre><code>implementation 'com.android.support:appcompat-v7:27.1.1'
  implementation 'com.android.support:support-v4:27.1.1'
  
  implementation 'com.google.firebase:firebase-core:16.0.0'
  implementation 'com.google.firebase:firebase-analytics:16.0.0'
  
  androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
  androidTestImplementation 'com.android.support.test:rules:1.0.2'
  androidTestImplementation 'com.android.support.test:runner:1.0.2'
  implementation 'com.crashlytics.sdk.android:crashlytics:2.9.4'
  </code></pre>
  
  <p>}</p>
  
  <p>apply plugin: 'com.google.gms.google-services'</p>