Google cloud messaging GCM - Push Notification not being sent (Server Side) - php

Question

I am able to get the device id and save it to my database, and when something happens, I try to send the push notification but it does not get delivered to the phone. Here is what I do in my PHP:
$url = 'https://android.googleapis.com/gcm/send';
$device_ids = array( $device_id );
$headers = array('Authorization: key=' . 'my_api_key',
'Content-Type: application/json');
$t_data = array();
$t_data['message'] = 'Someone commented on your business.';
$t_json = array( 'registration_ids' => $device_ids , 'data' => $t_data );
$ch = curl_init();
curl_setopt($ch, CURLOPT_HTTPHEADER, array( 'Authorization: key=my_id', 'Content-Type: application/json' ) );
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode( $t_json ) );
curl_setopt($ch, CURLOPT_URL, $url);
$result = curl_exec($ch);
if ($result === FALSE)
{
die('Curl failed: ' . curl_error($ch));
}
curl_close($ch);
and here is the result I get from the curl_exec call:
{"multicast_id":8714083978034301091,"success":1,"failure":0,"canonical_ids":0,"r‌​esults":[{"message_id":"0:1350807053347963%9aab4bd8f9fd7ecd"}]}
One thing I am wondering is whether I have to do something extra in the app like write my own Reciever class?
Thanks!
EDIT:
Here is my GCMIntentService class:
package com.problemio;
import static com.google.android.gcm.GCMConstants.ERROR_SERVICE_NOT_AVAILABLE;
import static com.google.android.gcm.GCMConstants.EXTRA_ERROR;
import static com.google.android.gcm.GCMConstants.EXTRA_REGISTRATION_ID;
import static com.google.android.gcm.GCMConstants.EXTRA_SPECIAL_MESSAGE;
import static com.google.android.gcm.GCMConstants.EXTRA_TOTAL_DELETED;
import static com.google.android.gcm.GCMConstants.EXTRA_UNREGISTERED;
import static com.google.android.gcm.GCMConstants.INTENT_FROM_GCM_LIBRARY_RETRY;
import static com.google.android.gcm.GCMConstants.INTENT_FROM_GCM_MESSAGE;
import static com.google.android.gcm.GCMConstants.INTENT_FROM_GCM_REGISTRATION_CALLBACK;
import static com.google.android.gcm.GCMConstants.VALUE_DELETED_MESSAGES;
import java.util.Random;
import java.util.concurrent.TimeUnit;
import com.google.android.gcm.GCMBaseIntentService;
import android.app.AlarmManager;
import android.app.IntentService;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.PowerManager;
import android.os.SystemClock;
import android.util.Log;
import android.widget.Toast;
import utils.GCMConstants;
public class GCMIntentService extends GCMBaseIntentService
{
public GCMIntentService()
{
super(ProblemioActivity.SENDER_ID);
}
#Override
protected void onRegistered(Context ctxt, String regId) {
Log.d(getClass().getSimpleName(), "onRegistered: " + regId);
Toast.makeText(this, regId, Toast.LENGTH_LONG).show();
}
#Override
protected void onUnregistered(Context ctxt, String regId) {
Log.d(getClass().getSimpleName(), "onUnregistered: " + regId);
}
#Override
protected void onMessage(Context ctxt, Intent message) {
Bundle extras=message.getExtras();
for (String key : extras.keySet()) {
Log.d(getClass().getSimpleName(),
String.format("onMessage: %s=%s", key,
extras.getString(key)));
}
}
#Override
protected void onError(Context ctxt, String errorMsg) {
Log.d(getClass().getSimpleName(), "onError: " + errorMsg);
}
#Override
protected boolean onRecoverableError(Context ctxt, String errorMsg) {
Log.d(getClass().getSimpleName(), "onRecoverableError: " + errorMsg);
return(true);
}
}
UPDATE:
Looking at LogCat, it turned out that the message is getting to the device. But the device is not displaying the push notification for some reason.

Answer 1

From the response it seems that the message is delivered. On Android you should have a GCMIntentService class that extends GCMBaseIntentService, to receive the message on the device. You should check the gcm-demo-client that comes in the SDK samples for a good approach on how to implement this on the app. There you only need set the SENDER_ID (your google proyect number) in the CommonUtilities class to receive messages from your server.
More info here.
To generate the notification on the GCMIntentService you can use:
//Issues a notification to inform the user that server has sent a message.
private static void generateNotification(Context context, String message, String title,) {
int icon = R.drawable.logo;
NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Intent notificationIntent = new Intent(context, AnActivity.class);
// set intent so it does not start a new activity
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent intent = PendingIntent.getActivity(context, 0, notificationIntent, 0);
Uri defaultSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Notification notification = new NotificationCompat.Builder(context)
.setContentTitle(title)
.setContentText(message)
.setContentIntent(intent)
.setSmallIcon(icon)
.setLights(Color.YELLOW, 1, 2)
.setAutoCancel(true)
.setSound(defaultSound)
.build();
notificationManager.notify(0, notification);
}
Have you also registered the receiver on the manifest? Under the application tag?
<!--
BroadcastReceiver that will receive intents from GCM
services and handle them to the custom IntentService.
The com.google.android.c2dm.permission.SEND permission is necessary
so only GCM services can send data messages for the app.
-->
<receiver
android:name="com.google.android.gcm.GCMBroadcastReceiver"
android:permission="com.google.android.c2dm.permission.SEND" >
<intent-filter>
<!-- Receives the actual messages. -->
<action android:name="com.google.android.c2dm.intent.RECEIVE" />
<!-- Receives the registration id. -->
<action android:name="com.google.android.c2dm.intent.REGISTRATION" />
<category android:name="com.google.android.gcm.demo.app" />
</intent-filter>
</receiver>
<!--
Application-specific subclass of GCMBaseIntentService that will
handle received messages.
By default, it must be named .GCMIntentService, unless the
application uses a custom BroadcastReceiver that redefines its name.
-->
<service android:name=".GCMIntentService" />

Answer 2

You only need a collapseKey if you are planning to have your messages overwrite the previous message of that type. So if you are sending a message that the app needs to sync you can give it a collapse key so it will only send 1 sync message. The official docs describe how to use it.

Answer 3

While sending notification from GCM Server, which url to be used?
https://android.googleapis.com/gcm/send or
https://gcm-http.googleapis.com/gcm/send