title: Google Play Services Library Error onesignal
body: <p>for a one year using onesignal to send notification , recently occured an error although the APP is installed and users are added, in sectoin "all users" notification is not reachable.</p>
  
  <p>error:
  google Play services library initialization error. Check for conflicting plugins and make sure "com.google.android.gms.version" is in your AndroidManifest.xml. Check the logcat for more details..</p>
  
  <p>i added</p>
  
  <pre><code>&lt;meta-data
          android:name="com.google.android.gms.version"
          android:value="@integer/google_play_services_version" /&gt;
  </code></pre>
  
  <p>in AndroidManifest.xml</p>
  
  <p>and i have this code in buil.gradle</p>
  
  <pre><code>compile 'com.onesignal:OneSignal:3.8.4'
  // Required for OneSignal, even if you have added FCM.
  compile 'com.google.gms:google-services:3.2.1'
  </code></pre>
  
  <p>please help me.</p>