GCM server returns null value - php

Question

I am trying to implement Google Cloud Messaging in my app. Still i can't figure out why i don't get the correct message to my phone. My server sends a message, GCM servers respond to to that and send a message back to my phone.This message looks like this
{\"multicast_id\":8186678237008516542,\"success\":1,\"failure\":0,\"canonical_ids\":0,\"results\":[{\"message_id\":\"0:1356727074650189%12aaaeccf9fd7ecd\"}]}"
I think that means that i get a message, the problem is my app only shows null value. I am using the Browser Api key right now and get these results, but I have tried to use server key(which theoretically is more suitable to my needs), but i get Error 401.
For receiving the message, i use a broadcast receiver
public void onReceive(Context context, Intent intent){
String newMessage = intent.getExtras().getString(EXTRA_MESSAGE);}
EXTRA_MESSAGE = message
This is the code i use in my server.
$fields = array(
'registration_ids' => $registatoin_ids,
'data' => $message,
);
$headers = array(
'Authorization: key=' . GOOGLE_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));
Does anybody know what the problem might be??

Answer 1

I think your response string name mismatch, So please check your response string name. I have used it as "price" in my server side code and in my android side code.you can see it in below images.
File at server side : send_message.php
File at application side : GCMNotificationIntentService
public static final int NOTIFICATION_ID = 1;
private NotificationManager mNotificationManager;
NotificationCompat.Builder builder;
public GCMNotificationIntentService() {
super("GcmIntentService");
}
public static final String TAG = "GCMNotificationIntentService";
#Override
protected void onHandleIntent(Intent intent) {
Bundle extras = intent.getExtras();
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
String messageType = gcm.getMessageType(intent);
if (!extras.isEmpty()) {
if (GoogleCloudMessaging.MESSAGE_TYPE_SEND_ERROR
.equals(messageType)) {
sendNotification("Send error: " + extras.toString());
} else if (GoogleCloudMessaging.MESSAGE_TYPE_DELETED
.equals(messageType)) {
sendNotification("Deleted messages on server: "
+ extras.toString());
} else if (GoogleCloudMessaging.MESSAGE_TYPE_MESSAGE
.equals(messageType)) {
for (int i = 0; i < 3; i++) {
try {
Thread.sleep(5000);
} catch (InterruptedException e) {
}
}
sendNotification("Message Received from Google GCM Server: "
+ extras.get("price"));
}
}
GcmBroadcastReceiver.completeWakefulIntent(intent);
}
private void sendNotification(String msg) {
//Log.d(TAG, "Preparing to send notification...: " + msg);
mNotificationManager = (NotificationManager) this
.getSystemService(Context.NOTIFICATION_SERVICE);
PendingIntent contentIntent = PendingIntent.getActivity(this, 0,
new Intent(this, MainActivity.class), 0);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
this).setSmallIcon(R.drawable.gcm_cloud)
.setContentTitle("GCM Notification")
.setStyle(new NotificationCompat.BigTextStyle().bigText(msg))
.setContentText(msg);
mBuilder.setContentIntent(contentIntent);
mNotificationManager.notify(NOTIFICATION_ID, mBuilder.build());
//Log.d(TAG, "Notification sent successfully.");
}

Answer 2

adjust your code from
'data' => $message,
to be something like this:
'&data.message=' => $message,
and your onMessage() method in GCMIntentService should be something like below:
protected void onMessage(Context ctx, Intent intent) {
// TODO Auto-generated method stub
String message =intent.getStringExtra("message");;
}