I read about Google Cloud Messaging at http://developer.android.com/google/gcm/gcm.html.
It supports Third Party Application server to Android application push notification.
I am wondering whether it is possible to implement the same thing push/receive notification from an Android app on one mobile to the same Android app on another mobile using Google Cloud Messaging.
If not, is there any other free service available similar to Google Cloud Messaging?
An Android device can send a GCM message to another Android device. All it needs is the API Key (of the Google API Project ID that the app uses to register to GCM) an the Registration ID of the other device. Using these parameters it can send a GCM message to another device via an HTTP request.
Usually applications that use GCM require a 3rd party server in order to store the Registration IDs of all registered devices. If your app has a different way to let devices share their Registration IDs with each other without requiring a server, you don't need the server.
As far as I'm aware, there has to be a server in the middle to send the push notifications (Android -> Personal Server -> GCM Server -> Android)
So the Android device sending the notification would send some data to a script on the server (using a HTTP GET/POST), and that script would then send the push notifications to all the devices that you wanted it to
Following the example Code from google (GCM Client Example), you can build an app to get a registration ID for your device, but sending messages without a server wouldn't work in my opinion. I didn't tried by now, but what about using the Google Backend Starter, or (what I tried) using a Backend as a Service Provider like apiOmat if you can't afford or don't want to set up a server.
Related
I want to send push notification using firebase from my admin panel web page to the android phones registered in firebase database. I have tried sending notifications using PHP and mySQL but want to use firebase only to send notification. I have also tried sending notification from firebase console to android devices. But I want to use the firebase API to send notification from web to android devices.
Firebase Notification is a panel in the Firebase Console, where you can send messages to specific devices, device groups, topics and audiences. It cannot send messages to Web users (yet). There is no public API for Firebase Notifications.
There is an API for Firebase Cloud Messaging, on top of which Notifications is built. FCM support most ways of sending messages: specific devices, device groups and topics. It also supports sending to all platforms: iOS, Android and Web.
But sending messages to devices through FCM always requires that you specify the FCM Server Key. As its name implies, this key should only be used on trusted processes. The most common way to run a trusted process is to run it on your app server (for example using PHP code that runs on a hosted server). But you can also run it on your own machine. Firebase recently released Cloud Functions for Firebase, which allows you to run JavaScript functions on Google's hardware. Sending FCM messages is one of the documented use-cases for Cloud Functions for Firebase.
I am developing an server based Android app in which i have to notify user. Please suggest me some techniques to do this. How do Whatsapp, Facebook notifies the user?
As a suggestion , you need
Server to run web application
web application to register and send notifications to devices where your app installed.
client / server keys registered with Google Cloud Messaging API
to perform this
how to get SNS working in Android?
We have an app that sends SNS messages to iOs apps already (I personally am only working with the App side). And have extended it to send Android messages. It works fine for iOS and thinks it is sending to Android correctly but no message ever actually shows up on the Android device.
I am registering with the backend by getting the Settings.Secure.ANDROID_ID and sending that to the web service that registers it with Amazon SNS.
I have turned on all the permissions that I can (I don't need to specifically ask for permission do I?, how would I do that).
Basically the setup we have is I hand our web service a device id and it registers with Amazon and the web service sends the notifications out (but I am never seeing them).
Is there anything else I need to do or check on the client side?
Amazon SNS for push messaging on android instructions is the same as normal GCM on android.
You must follow the directions here:
GCM Getting Started - covers the google console set up and will provide you with the :
SenderId, for use in the android app code. (This is the Google Console's Project #)
the api key, for use in SNS server setup
Implementing GCM Client - covers client library, getting the registration ID, setting up a wakeful service and broadcast receiver for creating notifications or whatever you'd like you app to do when it receives a push.
You should also read thru amazon's documentation Getting Started with Google Cloud Messaging for Android which summarizes the the previous two links.
I am registering with the backend by getting the Settings.Secure.ANDROID_ID and sending that to the web service that registers it with Amazon SNS.
This is not correct. By using the GCM client library, call the following methods to get the real registration ID (sns likes to call them an endpoint) that you can send to the web service that registers it with Amazon SNS. There should be no need to use Settings.Secure.ANDROID_ID at all for push on android.
GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(someContext);
String registrationId = gcm.register(senderId);
I have turned on all the permissions that I can (I don't need to specifically ask for permission do I?, how would I do that).
see Implementing GCM Client for the required permissions that you must include in your AndroidManifest.xml. And no, you don't need to specifically ask for permission since it would be in the AndroidManifest.xml but you could ask the user on first app start with a dialog or some other UI. You may also choose to let the user disable push for you app via a settings screen if your app has one.
Is there anything else I need to do or check on the client side?
You should confirm that you are able to get registration ids (perhaps some logging)?
And then with those ids, test your implementation. Here is a question that was asked a while ago that will help you use a rest client to send pushes with your registration ids and api_key (SNS login not needed).
How to push notification from rest client for testing purpose
I am developing android application that would receive data from server any time.i have searched in google to get some information.
1)android cloud to device messaging(C2DM).
2)persistent TCP/IP connection.
how to implement C2DM function and other one how to register C2DM?.please explain detail and send me sample application
C2DM is deprecated and you can use GCM for your requirement
Google Cloud Messaging for Android (GCM) is a service that helps developers send data from servers to their Android applications on Android devices. This could be a lightweight message telling the Android application that there is new data to be fetched from the server (for instance, a movie uploaded by a friend), or it could be a message containing up to 4kb of payload data (so apps like instant messaging can consume the message directly). The GCM service handles all aspects of queueing of messages and delivery to the target Android application running on the target device
This document describes how to write an Android application and the server-side logic, using the helper libraries (client and server) provided by GCM.
Check these links,
http://developer.android.com/guide/google/gcm/gs.html
http://developer.android.com/guide/google/gcm/demo.html
http://www.basic4ppc.com/forum/basic4android-getting-started-tutorials/19226-android-push-notification-gcm-framework-tutorial.html
http://fundroiding.wordpress.com/2012/06/29/google-cloud-messaging-for-android-gcm-simple-tutorial/
for client side app you can find the code here
https://github.com/marknutter/GCM-Cordova
c2dm is deprecated.
https://developers.google.com/android/c2dm
Maybe you'd better start with GCM
best regards
I was just looking at the new Google Cloud Messaging (GCM) and I was wondering if it is possible to use GCM for Instant Messaging on your Android application?
I saw you can send data, like a message, from a server, but is it also possible to send from one device to another one?
And how would this work?
Some example code would be really helpful..
Tnx!
The official docs on Google Cloud Messaging for Android does mention that GCM can be used to develop an instant messaging app.
...or it could be a message containing up to 4kb of payload data (so
apps like instant messaging can consume the message directly).
So we went ahead and created an instant messaging app using GCM. The server-side is powered by Google App Engine. You can read the complete tutorial here. Create an Instant Messaging app using Google Cloud Messaging (GCM)
So it is possible to use GCM for Instant Messaging on Android, to answer your question. However, reliability of GCM compared to XMPP for IM is another topic.
Just my two cents:
I think you should not use GCM for delivering IM. You should have a dedicated server where your Android IM apps will connect to, using a persistent socket connection. Your server will know who is online or not and therefore can present an 'online list' to all the apps.
GCM can come into play, while users are offline or not running your app. A GCM message can be sent to them to indicate 'XXXX wants to chat'. They can then launch your app and automatically connects to a chat session.
Google has said that the delivery of GCM messages are not guaranteed. This reason alone is not a good idea to rely on them for Instant Messaging.
Try pub nub - it is pretty easy to implement - send Im from one mobile to another - simply fire up the web page (see link) in the browser , and chat between pc, mobile - and works - with 'no server'. Code is for javascript but they also have java. Chat app using jquerymobile web app framework
You might want to check out how a server sends a message to the GCM Service. It is possible to use php on Server side so it should be possible to adapt that to a POST request directly out of your application. However, to communicate you need the registered ids of the devices you want to send data to. Means you will need something to store and get them. Best solution would be your own (web) server which stores all ids and handles the Message sending.