title: How to receive a message when the app is in background? (Android, Unity, GCM)
body: <p>I'm very experienced on Unity and iOS and I can deploy my Unity app to Android. But I don't know anything about native Android stuff.</p>
  
  <p>My problem is about receiving a GCM message and showing a notification when the android app is in background. I implemented it and it works perfect when the app is in foreground but my GCM message listener isn't being triggered when the app is in background and I can't show the notification.</p>
  
  <p>I use this plugin for receiving GCM messages : <a href="https://github.com/kskkbys/unity-gcm" rel="nofollow">https://github.com/kskkbys/unity-gcm</a>
  I use this for showing the notification : <a href="https://www.assetstore.unity3d.com/en/#!/content/9484" rel="nofollow">https://www.assetstore.unity3d.com/en/#!/content/9484</a></p>
  
  <p>I tried to reach out the authors of these plugins but they didn't reply for a long time...</p>