title: Google Analytucs v4 Android No campaign data found
body: <p>I works with google analytics v4 on android and i have troubles after install GAV4 service.</p>
  
  <p>THis is my global_tracker.xml file:</p>
  
  <pre><code>&lt;resources&gt;
      &lt;string name="ga_trackingId"&gt;UA-XXXXXXXX-3&lt;/string&gt;
      &lt;bool name="ga_autoActivityTracking"&gt;true&lt;/bool&gt;
      &lt;bool name="ga_reportUncaughtExceptions"&gt;true&lt;/bool&gt;
      &lt;screenName name="my.app.com"&gt;Screen 0 - Splash&lt;/screenName&gt;
      ... 
  &lt;/resources&gt;
  </code></pre>
  
  <p>This file have more of "screenName" values, but i delete it for example.</p>
  
  <p>In the "Application" class i have this code: </p>
  
  <pre><code>public void onCreate() {
      super.onCreate();
      Analytics.init(this);
  }
  </code></pre>
  
  <p>Line Analytics.init(this) initialize Tracker like this:</p>
  
  <pre><code>private static Tracker tracker;
  public static void init(Application application) {
      GoogleAnalytics analytics = GoogleAnalytics.getInstance(application);
      analytics.getLogger().setLogLevel(Logger.LogLevel.VERBOSE);
      if(tracker == null) {
          tracker = analytics.newTracker(R.xml.global_tracker);
      }
  }
  
  public static void trackScreenView(String screenName) {
      tracker.enableAdvertisingIdCollection(true);
      tracker.enableAutoActivityTracking(true);
      tracker.setScreenName(screenName);
      tracker.send(new HitBuilders.AppViewBuilder().build());
  }
  </code></pre>
  
  <p>And also in Manifest i have installed broadcast service and google play services: </p>
  
  <pre><code>    &lt;meta-data
          android:name="com.google.android.gms.version"
          android:value="@integer/google_play_services_version" /&gt;
  
      &lt;meta-data android:name="com.google.android.gms.analytics.globalConfigResource"
                 android:resource="@xml/global_tracker" /&gt;
  
      &lt;service android:name="com.google.android.gms.analytics.CampaignTrackingService"/&gt;
      &lt;receiver android:name="com.google.android.gms.analytics.CampaignTrackingReceiver"
                android:exported="true"&gt;
          &lt;intent-filter&gt;
              &lt;action android:name="com.android.vending.INSTALL_REFERRER" /&gt;
          &lt;/intent-filter&gt;
      &lt;/receiver&gt;
  </code></pre>
  
  <p>But after this installation i have Debugger message about data not found on GAV4:</p>
  
  <pre><code>I/GAV4﹕ Thread[GAThread,5,main]: No campaign data found.
  </code></pre>
  
  <p>Any knows about this bug and can help me for it?
  Thanks! </p>