Firebase message is received on device but not displayed via notification

Question

I'm trying to integrate Firebase Cloud Messaging (I use this code, which is mirrored here) with my existing app.

Relevant codes:

service.php

$msg_id = $_POST['id'];
$title = $_POST['title'];
$content = $_POST['content'];
$msg_date = $_POST['date'];
$author = $_POST['author'];

// insert the message into DB               
$sql = "INSERT INTO tbl_message(msg_id, title, content, msg_date, author) VALUES ('$msg_id','$title','$content','$msg_date','$author')";

if ($result = mysqli_query($db, $sql)){

    $firebase = new Firebase();
    $push = new Push();

    $payload = array();
    $payload['foo'] = '123';
    $payload['bar'] = 'xyz';

    $push->setTitle($title);
    $push->setMessage($content);
    $push->setAuthor($author);
    $push->setDate($msg_date);
    $push->setImage('');
    $push->setPayload($payload);
    $push->setIsBackground(FALSE);
    $resp = '';
    $response = '';
    $resp = $push->getPush();
    $response = $firebase->sendToTopic('global', $resp);

    echo $response;
}

Firebase.php

 $to,
            //'data' => $message,
            'data' => array("message" => $message));

        return $this->sendPushNotification($fields);
    }

    // Sending message to a topic by topic name
    public function sendToTopic($to, $message) {
        $fields = array(
            'to' => '/topics/' . $to,
            //'data' => $message,
            'data' => array("message" => $message)
        );
        return $this->sendPushNotification($fields);
    }

    // sending push message to multiple users by firebase registration ids
    public function sendMultiple($registration_ids, $message) {
        $fields = array(
            'to' => $registration_ids,
            //'data' => $message,
            'data' => array("message" => $message)
        );

        return $this->sendPushNotification($fields);
    }

    // function makes curl request to firebase servers
    private function sendPushNotification($fields) {

        require_once 'config.php';

        // Set POST variables
        $url = 'https://fcm.googleapis.com/fcm/send';

        $headers = array(
            'Authorization: key=' . FIREBASE_API_KEY,
            'Content-Type: application/json'
        );
        // Open connection
        $ch = curl_init();

        // Set the url, number of POST vars, POST data
        curl_setopt($ch, CURLOPT_URL, $url);

        curl_setopt($ch, CURLOPT_POST, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

        // Disabling SSL Certificate support temporarly
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));

        // Execute post
        $result = curl_exec($ch);
        if ($result === FALSE) {
            die('Curl failed: ' . curl_error($ch));
        }

        // Close connection
        curl_close($ch);

        return $result;
    }
}

?>

MainActivity.java

package studio.emcorp.monitoringsiswa;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.content.LocalBroadcastManager;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.text.TextUtils;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

import com.google.firebase.messaging.FirebaseMessaging;


public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    private static final String TAG = MainActivity.class.getSimpleName();
    private BroadcastReceiver mRegistrationBroadcastReceiver;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
;

        mRegistrationBroadcastReceiver = new BroadcastReceiver() {
            @Override
            public void onReceive(Context context, Intent intent) {

                // checking for type intent filter
                if (intent.getAction().equals(NotificationConfig.REGISTRATION_COMPLETE)) {
                    // gcm successfully registered
                    // now subscribe to `global` topic to receive app wide notifications
                    FirebaseMessaging.getInstance().subscribeToTopic(NotificationConfig.TOPIC_GLOBAL);

                    displayFirebaseRegId();

                } else if (intent.getAction().equals(NotificationConfig.PUSH_NOTIFICATION)) {
                    // new push notification is received

                    String message = intent.getStringExtra("message");

                    Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();

                    //txtMessage.setText(message);
                }
            }
        };



    @Override
    protected void onResume() {
        super.onResume();

        // register GCM registration complete receiver
        LocalBroadcastManager.getInstance(this).registerReceiver(mRegistrationBroadcastReceiver,
                new IntentFilter(NotificationConfig.REGISTRATION_COMPLETE));

        // register new push message receiver
        // by doing this, the activity will be notified each time a new message arrives
        LocalBroadcastManager.getInstance(this).registerReceiver(mRegistrationBroadcastReceiver,
                new IntentFilter(NotificationConfig.PUSH_NOTIFICATION));

        // clear the notification area when the app is opened
        NotificationUtil.clearNotifications(getApplicationContext());
    }

    @Override
    protected void onPause() {
        LocalBroadcastManager.getInstance(this).unregisterReceiver(mRegistrationBroadcastReceiver);
        super.onPause();
    }
}

Sending messages directly from Firebase Console works fine. Now the problem is sending messages via PHP script. Somewhow the server manages to send the message successfuly, e.g:

{"message_id":4732936739964848111}

, and the device receive it:

06-19 09:26:21.590 18604-19560/net.anta40.app.firebasetest E/MyFirebaseMessagingService: From: /topics/global 06-19 09:26:21.590 18604-19560/net.anta40.app.firebasetest E/MyFirebaseMessagingService: Data Payload: {message={"data":{"image":"","is_background":false,"payload":{"bar":"xyz","foo":"123"},"title":"test","message":"mehehehe","timestamp":"2017-06-19 2:26:21"}}} 06-19 09:26:21.600 18604-19560/net.anta40.app.firebasetest E/MyFirebaseMessagingService: push json: {"message":{"data":{"timestamp":"2017-06-19 2:26:21","message":"mehehehe","payload":{"bar":"xyz","foo":"123"},"image":"","title":"test","is_background":false}}} 06-19 09:26:21.600 18604-19560/net.anta40.app.firebasetest E/MyFirebaseMessagingService: Json Exception: No value for data 06-19 09:26:21.720 1098-1098/? D/wpa_supplicant: RX ctrl_iface - hexdump(len=11): 53 49 47 4e 41 4c 5f 50 4f 4c 4c 06-19 09:26:21.720 1098-1098/? D/wpa_supplicant: wlan0: Control interface command 'SIGNAL_POLL'

but not displayed via notifications. What goes wrong here?

Firebase message is received on device but not displayed via notification

Answers (1)

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