GCM launch background/closed app when get notification (Android)

Question

I have a problem with GCM. I created a server side notification pusher (in PHP), that send to specific user (based on location) who have the app, a notification.

I have three class for managing the registration and the notification listener.

public class PusherIDListenerService extends InstanceIDListenerService {
    private static final String TAG = "PUSHER_ID_LISTENER_SERVICE";

    @Override
    public void onTokenRefresh() {
        Intent intent = new Intent(this, RegistrationIntentService.class);
        startService(intent);
    }
}

Now the registration class

public class RegistrationIntentService extends IntentService {
    private static final String TAG = "REGISTRATION_SERVICE";

    private int idClient;

    public RegistrationIntentService() {
        super(TAG);
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        this.idClient = intent.getIntExtra("idClient", 0);
        LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

        String locationProvider = LocationManager.NETWORK_PROVIDER;
        Location lastKnownLocation = locationManager.getLastKnownLocation(locationProvider);

        double lat = 0;
        double lon = 0;
        if (lastKnownLocation != null) {
            lat = lastKnownLocation.getLatitude();
            lon = lastKnownLocation.getLongitude();
        } else {
            Log.d(TAG, "Position not available, updating next time.");
        }

        try {
            synchronized (TAG) {
                InstanceID instanceID = InstanceID.getInstance(this);
                String senderId = getString(R.string.gcm_defaultSenderId);
                String token = instanceID.getToken(senderId, GoogleCloudMessaging.INSTANCE_ID_SCOPE, null);

                this.sendRegistrationToServer(token, lat, lon);
            }
        } catch (Exception e) {
            Log.d(TAG, "Failed to complete token refresh", e);
        }

        Intent registrationComplete = new Intent(this, ActStartPage.class);
        LocalBroadcastManager.getInstance(this).sendBroadcast(registrationComplete);
    }

    private void sendRegistrationToServer(String token, double lat, double lon) {
        // doing some stuff
    }
}

And now the Listener

public class PusherListenerService extends GcmListenerService {
    private static final String TAG = "PUSHER_LISTENER_SERVICE";

    @Override
    public void onMessageReceived(String from, Bundle data) {
        String title = data.getString("title");
        String message = data.getString("body");
        Log.d(TAG, "From: " + from);
        Log.d(TAG, "Message: " + message);

        sendNotification(title, message);
    }

    private void sendNotification(String title, String message) {
        Intent intent = new Intent(this, ActStartPage.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        intent.putExtra("menuTabId", 3);
        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.notification_icon)
                .setContentTitle(title)
                .setContentText(message)
                .setAutoCancel(true)
                .setContentIntent(pendingIntent);

        NotificationManager notificationManager =
                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

        notificationManager.cancelAll();
        notificationManager.notify((int)(Math.random()), notificationBuilder.build());
    }
}

My manifest look like this

And finally i launch all that in my main activity in the onCreate

    if (checkPlayServices()) {
        Intent intent = new Intent(this, RegistrationIntentService.class);
        intent.putExtra("idClient", Integer.parseInt(this.getResources().getString(R.string.clientId)));
        startService(intent);
    }

So now, what is working :

launch registration : OK
send notification when app is on foreground or background or removed from current apps : OK
Click on the notification and launch the app again when the app is on foreground : OK

What's not working =( :

Click on the notification and launch the app (again) when the app is in background or removed from current apps

I tried some things, but nothing worked. I don't really good understand the xml settings too.

Here is an example of the JSON i send to gcm :

"notification":{
    "body":"blabla",
    "title":"one title"
    "icon":"notification_icon"
},
"data":{
    "body":"blabla",
    "title":"one title"
},
"registration_ids":["id1", "id2", etc]

So what is wrong in my code (or what must i add) for launching the app again when i receive a notification when the app is closed ?

Any ideas ?

Thanks =)

Lucsartes · Accepted Answer

OK,

I just fixed the problem.

The JSON i send is like :

"notification":{
    "body":"blabla",
    "title":"one title"
    "icon":"notification_icon"
},
"data":{
    "body":"blabla",
    "title":"one title"
},
"registration_ids":["id1", "id2", etc]

But this part (from the JSON) :

"notification":{
    "body":"blabla",
    "title":"one title"
    "icon":"notification_icon"
}

was the problem.

I thought the JSONmessage is in two part, "data" when app is open, and "notification" when app is closed or in background. ~~I thought that, because the app is closed, how can android know that he must show a notification ? So it's why use "notification" for specify that android must show a notification.~~

But no, "notification" is used for send simple notification without action.

So i resolve the problem by sending this JSON :

"data":{
    "body":"blabla",
    "title":"one title"
},
"registration_ids":["id1", "id2", etc]

GCM launch background/closed app when get notification (Android)

Answers (1)

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