MyFirebaseMessagingService

[Dylan]

I have been following the guide at https://firebase.google.com/docs/cloud-messaging/android/client?authuser=0 exactly and can't get past the following section ..

<!-- [START firebase_service] -->
<service
    android:name=".MyFirebaseMessagingService">
    <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT"/>
    </intent-filter>
</service>
<!-- [END firebase_service] -->
<!-- [START firebase_iid_service] -->
<service
    android:name=".MyFirebaseInstanceIDService">
    <intent-filter>
        <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
    </intent-filter>
</service>
<!-- [END firebase_iid_service] -->

I get Unresolved class 'MyFirebaseMessagingService' and Unresolved class 'MyFirebaseInstanceIDService'

I can't find anywhere in the guidelines where these classes are created although in other forums I see that users are creating them manually. 

The Android Studio (v3.0.1) Firebase - Cloud Messaging 'wizard' doesn't mention anything about this step at all.

Am I missing a step in the procedure to integrate FCM Messaging?

[Victor Jimbei]

Hi Dylan, 

You'll have to create this two classes and override required methods.

MyFirebaseInstanceIDService extends FirebaseInstanceIdService

and 

MyFirebaseMessagingService extends FirebaseMessagingService

Regards,
Victor

[Dylan]

Thanks Victor, I have had some success following your advice but have not come up against some more errors. When I use this code from FCM for the "public class MyFirebaseMessagingService extends FirebaseMessagingService {" I get errors on:

import android.app.NotificationChannel; (cannot resolve symbol 'NotificationChannel')

import com.firebase.jobdispatcher.Constraint; (cannot resolve symbol 'firebase')

import com.firebase.jobdispatcher.FirebaseJobDispatcher; (cannot resolve symbol 'firebase')
import com.firebase.jobdispatcher.GooglePlayDriver; (cannot resolve symbol 'firebase')
import com.firebase.jobdispatcher.Job; (cannot resolve symbol 'firebase')

scheduleJob(); (cannot resolve method 'scheduleJob')
handleNow(); (cannot resolve method 'handleNow')

The full content of the java file is posted below ...

package dmsech.dmsapps;

import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Build;
import android.support.v4.app.NotificationCompat;
import android.util.Log;

import com.firebase.jobdispatcher.Constraint;
import com.firebase.jobdispatcher.FirebaseJobDispatcher;
import com.firebase.jobdispatcher.GooglePlayDriver;
import com.firebase.jobdispatcher.Job;
import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

public class MyFirebaseMessagingService extends FirebaseMessagingService {

    private static final String TAG = "MyFirebaseMsgService";

    /**
     * Called when message is received.
     *
     * @param remoteMessage Object representing the message received from Firebase Cloud Messaging.
     */
    // [START receive_message]
    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        // [START_EXCLUDE]
        // There are two types of messages data messages and notification messages. Data messages are handled
        // here in onMessageReceived whether the app is in the foreground or background. Data messages are the type
        // traditionally used with GCM. Notification messages are only received here in onMessageReceived when the app
        // is in the foreground. When the app is in the background an automatically generated notification is displayed.
        // When the user taps on the notification they are returned to the app. Messages containing both notification
        // and data payloads are treated as notification messages. The Firebase console always sends notification
        // messages. For more see: https://firebase.google.com/docs/cloud-messaging/concept-options
        // [END_EXCLUDE]

        // TODO(developer): Handle FCM messages here.
        // Not getting messages here? See why this may be: https://goo.gl/39bRNJ
        Log.d(TAG, "From: " + remoteMessage.getFrom());

        // Check if message contains a data payload.
        if (remoteMessage.getData().size() > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.getData());

            if (/* Check if data needs to be processed by long running job */ true) {
                // For long-running tasks (10 seconds or more) use Firebase Job Dispatcher.
                scheduleJob();
            } else {
                // Handle message within 10 seconds
                handleNow();
            }

        }

        // Check if message contains a notification payload.
        if (remoteMessage.getNotification() != null) {
            Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
        }

        // Also if you intend on generating your own notifications as a result of a received FCM
        // message, here is where that should be initiated. See sendNotification method below.
    }
// [END receive_message]

[Ian Barber]

Job Dispatcher is a separate library, you need to include the library in your gradle file: 

implementation 'com.firebase:firebase-jobdispatcher:0.8.5'

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