title: onMessageReceived not fired when app in foreground
body: <p>I'm following <a href="https://www.codementor.io/flame3/send-push-notifications-to-android-with-firebase-du10860kb" rel="nofollow noreferrer">this</a> tutorial to receive push notifications on my android device.</p>
  
  <p>I can send push notifications from the Firebase console - and I can also see the Firebase event in logcat but my <code>onMessageReceived</code> is never fired. My app is running in the foreground. </p>
  
  <p>Here is the output in logcat after I send a notification:</p>
  
  <pre><code>12-31 12:23:54.741 9453-11132/com.example.app D/FA: Logging event (FE): notification_receive(_nr), Bundle[{firebase_event_origin(_o)=fcm, firebase_screen_class(_sc)=MainActivity, firebase_screen_id(_si)=407943440756026938, message_device_time(_ndt)=0, message_name(_nmn)=Label Arse, message_time(_nmt)=1514723034, message_id(_nmid)=3115372290763926350}]
  12-31 12:23:54.784 9453-11132/com.example.app V/FA: Connecting to remote service
  12-31 12:23:54.797 9453-11132/com.example.app D/FA: Logging event (FE): notification_foreground(_nf), Bundle[{firebase_event_origin(_o)=fcm, firebase_screen_class(_sc)=MainActivity, firebase_screen_id(_si)=407943440756026938, message_device_time(_ndt)=0, message_name(_nmn)=Label Arse, message_time(_nmt)=1514723034, message_id(_nmid)=3115372290763926350}]
  12-31 12:23:54.828 9453-11132/com.example.app V/FA: Connection attempt already in progress
  12-31 12:23:54.829 9453-11132/com.example.app D/FA: Connected to remote service
  12-31 12:23:54.829 9453-11132/com.example.app V/FA: Processing queued up service tasks: 2
  12-31 12:23:59.875 9453-11132/com.example.app V/FA: Inactivity, disconnecting from the service
  </code></pre>
  
  <p>MyFirebaseMessageingService.java</p>
  
  <pre><code>public class MyFirebaseMessagingService extends FirebaseMessagingService {
      private static final String TAG = "FCM Service";
      @Override
      public void onMessageReceived(RemoteMessage remoteMessage) {
          Log.d(TAG, "From: " + remoteMessage.getFrom());
          Log.d(TAG, "Notification Message Body: " + remoteMessage.getNotification().getBody());
      }
  }
  </code></pre>
  
  <p>FirebaseIDService.java</p>
  
  <pre><code>public class FirebaseIDService extends FirebaseInstanceIdService {
      private static final String TAG = "FirebaseIDService";
  
      @Override
      public void onTokenRefresh() {
          String refreshedToken = FirebaseInstanceId.getInstance().getToken();
          Log.d(TAG, "Refreshed token: " + refreshedToken);
  
          sendRegistrationToServer(refreshedToken);
      }
  
      private void sendRegistrationToServer(String token) {
          // Add custom implementation, as needed.
      }
  }
  </code></pre>
  
  <p>AndroidManifest.xml:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example.app"&gt;
  
      &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
  
      &lt;application
          android:allowBackup="true"
          android:hardwareAccelerated="false"
          android:icon="@mipmap/ic_launcher"
          android:label="@string/app_name"
          android:supportsRtl="true"
          android:theme="@style/AppTheme"&gt;
          &lt;activity
              android:name=".MainActivity"
              android:windowSoftInputMode="stateHidden"&gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
  
          &lt;service
              android:name=".services.MyFirebaseMessagingService"
              android:enabled="true"
              android:exported="true" /&gt;
          &lt;service
              android:name=".services.FirebaseIDService"
              android:enabled="true"
              android:exported="true"&gt;&lt;/service&gt;
      &lt;/application&gt;
  &lt;/manifest&gt;
  </code></pre>
  
  <p>build.gradle</p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 25
      buildToolsVersion '26.0.2'
  
      defaultConfig {
          applicationId "com.example.app"
          minSdkVersion 17
          targetSdkVersion 23
          versionCode 1
          versionName "1.0"
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
      sourceSets {
          main {
              java.srcDirs = ['src/main/java', 'src/main/java/services']
          }
      }
  }
  
  repositories {
      maven { url "https://jitpack.io" }
  }
  
  dependencies {
      implementation 'com.android.support.constraint:constraint-layout:1.0.2'
      implementation 'com.google.firebase:firebase-messaging:11.8.0'
      compile fileTree(include: ['*.jar'], dir: 'libs')
      compile 'com.android.volley:volley:1.1.0'
      compile 'com.google.code.gson:gson:2.8.2'
      compile 'com.github.PhilJay:MPAndroidChart:v2.1.6'
      testCompile 'junit:junit:4.12'
      compile 'com.android.support:appcompat-v7:25.4.0'
      compile 'com.google.firebase:firebase-appindexing:11.8.0'
      compile files('libs/glide-full-4.3.1.jar')
  }
  
  
  apply plugin: 'com.google.gms.google-services'
  </code></pre>