Android can't extend Firebase Messaging Service

Question

I am trying to implement Firebase Cloud Messaging in my application, I had implemented all settings to use this service, but when I try to extend FirebaseMessagingService in my class it gives me error and it can't find it at all, I can't even import com.google.firebase.messaging.FirebaseMessagingService as shown in the picture:

I had added all the code required: I added this to app gradle

compile 'com.google.firebase:firebase-core:9.4.0'  apply plugin: 'com.google.gms.google-services' 

and this to the module gradle:

classpath 'com.google.gms:google-services:3.0.0' 

this is the manifest code:

<application     android:allowBackup="true"     android:icon="@mipmap/ic_launcher"     android:label="@string/app_name"     android:supportsRtl="true"     android:theme="@style/AppTheme">     <activity android:name=".MainActivity">         <intent-filter>             <action android:name="android.intent.action.MAIN" />              <category android:name="android.intent.category.LAUNCHER" />         </intent-filter>     </activity>     <service         android:name=".MyFirebaseMessagingService">         <intent-filter>             <action android:name="com.google.firebase.MESSAGING_EVENT"/>         </intent-filter>     </service>     <service         android:name=".MyFirebaseInstanceIDService">         <intent-filter>             <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>         </intent-filter>     </service> </application> 

and I added the google json file to the app. So if anybody can help me please

Answer 1

If you want to use messaging, you have to add the messaging module. Right now you only added the core module.

So go ahead and include

compile 'com.google.firebase:firebase-messaging:9.4.0' 

All the available modules can be found at the bottom of https://firebase.google.com/docs/android/setup