Google Cloud Messaging (GCM) is a free service that allows sending of messages from a server to an Android application. To set up a GCM demo on Android, you create an Android project, get a configuration file from the GCM website, add the file to your project, set up Google Play Services, edit the application manifest, and create a demo app. The demo app can be made using code from a sample project on GitHub or another open source demo app. GCM messages can transfer up to 4kb of payload between a server and Android client app.
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ABSTRACT:-
Today Android is widely used operating system for smart phones, it is used as personal computer also. It contains a touch screen user interface, camera and network monitoring. The main purpose of this paper is to proposed a methodology to provide instant messaging over Google Cloud Messaging (GCM) and also we presents a survey on timing performance of GCM, our findings that the message delivery is uncertain , it does not guarantee to timely message arrival. Therefore is not applicable for time sensitive, but it may be good for application scenarios where random multicasting is sufficient.
This paper will help to learn Android device to device messaging (Instant Messaging) using Google Cloud Messaging (GCM). Communication flow arises from an Android device and the message to be communicated will be sent to GCM application server. From that server the message will be transfer to the Google Cloud Messaging server with the Reg Id of the device to send the notification. Then this message will be sent to another Android device by the Google Cloud Messaging server as a notification. It allows developers to send push messages to android device from the server. Google Cloud Messaging is a popular service as a client/server communication solution for android platform .
Keywords : Instant messaging, GCM, Timing performance of GCM.
You may know Google for search, YouTube, Android, Chrome, and Gmail, but that's only as an end-user of OUR apps. Did you know you can also integrate Google technologies into YOUR apps? We have many APIs and open source libraries that help you do that! If you have tried and found it challenging, didn't find not enough examples, run into roadblocks, got confused, or just curious about what Google APIs can offer, join us to resolve any blockers. Code samples will be in Python and/or Node.js/JavaScript. This session focuses on showing you how to access Google Cloud APIs from one of Google Cloud's compute platforms, whether serverless or otherwise.
2. Contents
■ What’s GCM?
■ Feature of GCM
■ How to set up a GCM demo on Android?
1. Make a project
2. Get a configuration file
3. Add the configuration file to your project
4. Set up Google Play Services
5. EditYour Application's Manifest
■ Do it! GCM demo
5. Feature of GCM
■ Free service
■ a GCM message can transfer up to 4kb of payload to the client app
6. 1. Make a project
2. Get a configuration file
3. Add the configuration file to your project
4. Set up Google Play Services
5. EditYour Application's Manifest
6. Make a GCM demo app
How to set up a GCM demo on Android?
7. 1. Make a project
Or Get the Project from google-services.git
https://github.com/googlesamples/google-services.git
How to set up a GCM demo on Android?
8. 1. Make a project -2
and set up
Google Play services
How to set up a GCM demo on Android?
9. 1. Make a project -3
How to set up a GCM demo on Android?
10. 2. Get a configuration file
– https://developers.google.com/cloud-messaging/android/start
How to set up a GCM demo on Android?
11. 2. Get a configuration file -2
How to set up a GCM demo on Android?
12. 2. Get a configuration file -3
How to set up a GCM demo on Android?
13. 3. Add the configuration file to your project
How to set up a GCM demo on Android?
14. 3. Add the configuration file to your project -2
How to set up a GCM demo on Android?
15. 3. Add the configuration file to your project -3
How to set up a GCM demo on Android?
16. 4. Set up Google Play Services (= 1. Make project -2)
How to set up a GCM demo on Android?
17. 5. EditYour Application's Manifest
How to set up a GCM demo on Android?
https://developers.google.com/cloud-messaging/android/client#manifest
19. 6. Make a GCM demo app
with google-services.git(1. Make a project-1)
or https://github.com/Tadoya/Tadoya-GCM-Demo.git
How to set up a GCM demo on Android?
22. Reference
■ Google Could Messaging
https://developers.google.com/cloud-messaging/
■ Saltfactory blog
http://blog.saltfactory.net/android/implement-push-service-via-gcm.html
Editor's Notes
Lifecycle Flow
Register to enable GCM. An instance of a client app registers to receive messages. For more discussion, see Registering Client Apps.
Send and receive downstream messages.
Send a message. The app server sends messages to the client app:
1. The app server sends a message to GCM connection servers.
2. The GCM connection server enqueues and stores the message if the device is offline.
3. When the device is online, the GCM connection server sends the message to the device.
4. On the device, the client app receives the message according to the platform-specific implementation. See your platform-specific documentation for details.
Receive a message. A client app receives a message from a GCM connection server. See your platform-specific documentation for details on how a client app in that environment processes the messages it receives.
Send and receive upstream messages. This feature is only available if you're using the XMPP connection server.
Send a message. A client app sends messages to the app server:
1. On the device, the client app sends messages to the XMPP connection server. See your platform-specific documentation for details on how a client app can send a message via XMPP.
2. The XMPP connection server enqueues and stores the message if the server is disconnected.
3. When the app server is re-connected, the XMPP connection server sends the message to the app server.
Receive a message. An app server receives a message from the XMPP connection server and then does the following:
1. Parses the message header to verify client app sender information.
2. Sends "ack" to the XMPP connection server to acknowledge receiving the message.
3. Optionally parses the message payload, as defined by the client app.