Firebase push notification not working

Question

I developed an android. I used firebase for notification. I read the firebase documentation, then I made them accordingly. I could send a push notification to one device using the InstanceID token. But I could not send push notifications to all devices. Please help me.

MyFirebaseMessagingService.java

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) { // TODO(developer): Handle FCM messages here. // If the application is in the foreground handle both data and notification messages here. // 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. Log.d(TAG, "From: " + remoteMessage.getFrom()); Log.d(TAG, "Notification Message Body: " + remoteMessage.getNotification().getBody()); } // [END receive_message] /** * Create and show a simple notification containing the received FCM message. * * @param messageBody FCM message body received. */ private void sendNotification(String messageBody) { Intent intent = new Intent(this, MainActivity.class); intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT); Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION); NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this) .setSmallIcon(R.drawable.ic_stat_ic_notification) .setContentTitle("FCM Message") .setContentText(messageBody) .setAutoCancel(true) .setSound(defaultSoundUri) .setContentIntent(pendingIntent); NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); notificationManager.notify(0 /* ID of notification */, notificationBuilder.build()); } } 

MyFirebaseInstanceIDService.java

 public class MyFirebaseInstanceIDService extends FirebaseInstanceIdService { private static final String TAG = "MyFirebaseIIDService"; /** * Called if InstanceID token is updated. This may occur if the security of * the previous token had been compromised. Note that this is called when the InstanceID token * is initially generated so this is where you would retrieve the token. */ // [START refresh_token] @Override public void onTokenRefresh() { // Get updated InstanceID token. String refreshedToken = FirebaseInstanceId.getInstance().getToken(); Log.d(TAG, "Refreshed token: " + refreshedToken); // TODO: Implement this method to send any registration to your app servers. sendRegistrationToServer(refreshedToken); } // [END refresh_token] /** * Persist token to third-party servers. * * Modify this method to associate the user FCM InstanceID token with any server-side account * maintained by your application. * * @param token The new token. */ private void sendRegistrationToServer(String token) { // Add custom implementation, as needed. } } 

MainActivity.java

 public class MainActivity extends AppCompatActivity { private static final String TAG = "MainActivity"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); if (getIntent().getExtras() != null) { for (String key : getIntent().getExtras().keySet()) { String value = getIntent().getExtras().getString(key); Log.d(TAG, "Key: " + key + " Value: " + value); } } Button subscribeButton = (Button) findViewById(R.id.subscribeButton); subscribeButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // [START subscribe_topics] FirebaseMessaging.getInstance().subscribeToTopic("news"); Log.d(TAG, "Subscribed to news topic"); // [END subscribe_topics] } }); Button logTokenButton = (Button) findViewById(R.id.logTokenButton); logTokenButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Log.d(TAG, "InstanceID token: " + FirebaseInstanceId.getInstance().getToken()); } }); } } 

manifest.xml

 <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.muhammed.firebasepush"> <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> </manifest> 

Answer 1

You must include premission in the manifest:

 <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE"/> <uses-permission android:name="android.permission.WAKE_LOCK" /> 

Update

No pretexts are needed anymore, because "all permissions required for FCM are now automatically added by the library"

Answer 2

Go to https://console.firebase.google.com/ go to the Notifications menu. here you can send messages directly to a specific device or to all devices or based on a topic signed by your client.

Answer 3

I tried all the solutions posted here and in other posts, but they did not work for me. I decided to manually uninstall and reinstall the application on my device. I hope for this help.

Answer 4

and don’t forget, I had the same problem, and it was solved by defining enabled, exported to true in my service, trying to do as I did ..

  <service android:name=".MyFirebaseMessagingService" android:enabled="true" android:exported="true"> <intent-filter> <action android:name="com.google.firebase.MESSAGING_EVENT"/> </intent-filter> </service> </application> 

Answer 5

Instead of "Submit now" in the firebase web console notifications, try "Submit later" with the time coming soon. Send now may have an error when it puts the date for sending in the past, so that it never gets sent.