This document describes the workflow for creating an Android chat application. It discusses registering with Google Cloud Messaging (GCM) to send push notifications, creating server-side code to save registration IDs and send messages, and handling receiving and storing messages on the device. The key steps include registering with GCM, saving registration IDs to a database, selecting users to message and sending messages through the web server and GCM to the recipient's device, and displaying received messages on the device. Contact information is provided to learn more about Android development or training.

2. Android Chat Application
Vineeth C
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3. What is Android
•It is an open source platform and OS for
mobile device
•Based On Linux Kernel
•Android has its own virtual machine.ie DVM
(Dalvik Virtual Machine), which is used for
executing the android application.
•Allows writing managed code in the Java
language

4. Components
1. Android App is built using components
• Activity- User visible window
• Service- Background service(no UI)
• Broadcast Receiver- Receiving broadcasts
from
• apps and system service.
• Content provider – Provides content to apps
2. Components are separate building blocks that can
be accessed by other apps.
3. Components are usually declared in application
manifest.

5. Architecture

6. Chat Application Workflow

7. STEPS
1. Register with Google cloud messaging(GCM)
from GOOGLE API console and get Sender Id
and Api key for GCM. For more info https:
//console.developers.google.com/?
utm_referrer=http://developer.android.
com/google/gcm/gs.html
2. Set Emulator for Google cloud messaging helper
library.
3. Create server side code to save Google Cloud
Messaging registration id in our database and
send push notification to device.

8. STEPS
4. Check device is registered for web server
or not. If not registered send device imei
and gcm regid into database server and
redirected to show all registered devices
screen.
5. Select user to send message and after
selection show send message screen.
6. When user sending message then send
sender IMEI , sendto IMEI and message to
web server , webserver get user device
data (regID) from database and call gcm to
send message to regID.

9. STEPS
7. When GCM Client on device get new
message store it in SQLite database on phone
and show new notification message in
notification bar.
8. After clicking notification show message
screen will open and show all got messages
and on show message screen user can also
send message to other devices.

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