An Android Project which was developed to give the user's a brand new chatting experience and was presented as Bachelor of Engineering Completion Project. It was successfully implemented on a local network to explore its functionality, and it has the potential to be implemented on a global scale.

1. TIMELINE CHAT
PRESENTED BY:
SOURAV AGARWAL
SWATHI KIRAN S
SOME ADITYA MANDAL
VISVESVARAYA TECHNOLOGICAL
UNIVERSITY
"Jnana Sangama", Belgaum: 590 018
Project Seminar
DEPARTMENT OF COMPUTER SCIENCE & ENGINEERING
ACHARYA INSTITUTE OF TECHNOLOGY
Under the Guidance
Mr. RAGHUNANDAN V
Assistant Professor,
Dept. of CSE

2. Dept. of CSE,A.I.T 2013-2014
Project Description
This project is based on an android messaging application.
The idea is to make a messaging app in which you can see the other person in the
chat without paying for the costly video calls.
You can see the other person in the chat through a series of pictures taken
automatically, and forming a collage at the top of your chat thread
2

3. Existing Work

4. Project Relevance
Java IDE is a well proven industry standard and mobile applications
are the future of computing
This project will give us an exposure to the android application
development which can be selected as a career
This is an innovative way of mobile communication
For people this can be used as an alternative to costly video calls
Potential of huge commercial success in this app driven world
 Potential to become a startup company

5. Software / Hardware Requirements
Software Requirements
Sl.
No.
Name of software/ OS/ tools Brief description/ Version number
1 Android Kit Ver. 4.0 or above
2 Eclipse 4.3.1
Hardware Requirements
Sl.
No.
Name of Hardware Brief description/ specification
1 Bootable Android Device 1 gh cpu, 512mb ram, 100mb hard
disk space
2 Server Linux Based
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Dept. of CSE,A.I.T 2013-2014

6. Dept. of CSE, 2013-2014 project proposal
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USER-INTERFACE
SENDER RECEIVERHome Page

7. CONNECTING WITH IP ADDRESS
CONNECTING WITH IP ADDRESS
TRANSMITTING IMAGES
WIFI ROUTER
CAMERA
RECEIVING
IMAGES
Sequence diagram

8. Architecture
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Dept. of CSE,A.I.T 2013-2014

9. Dept. of CSE, 2013-2014 project report
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➢ When the UI is Active, the camera manager takes a picture
automatically from the front camera.
➢ The raw data is converted to jpeg format by the photo manager of
the device.
➢ The image is then passed through the Socket Communicator to the
receiver’s UI.
➢ The chat messages are also passed through the socket
communicator to the sender’s and the receiver’s UI.
➢ The sender’s UI triggers the audio manger to select an audio file
to be transmitted via the socket communicator.
➢ The receiver will receive the raw audio data, format it into
playable format like mp3 and play it in the audio player directly.

10. Dept. of CSE,A.I.T 2013-2014
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System Design
Camera functionality Data Flow Diagram

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➢ When the sender’s UI becomes active then an image is clicked
from the front camera atomically by the camera manager.
➢ The raw image is then converted to the jpeg format by the photo
manager of the android device.
➢ The processed image is then transferred to the receiver’s UI via
the socket communicator.
➢ The image is received at the photo manager of the receiver
device.
➢ The image is then visible at the top of the receiver’s UI.

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The Chatting Functionality Data Flow Diagram

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➢ The chat messages are send through the socket
communicator.
➢ The receiver receives the message and is displayed on the
lower part of the screen.

14. Dept. of CSE, 2013-2014 project proposal
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The Audio Message Data Flow Diagram

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➢ The sender triggers the audio manager of the device.
➢ It searches for the file to be transmitted to the other device.
➢ It sends the audio file through the socket communicator.
➢ The receiver receives the audio message.
➢ It triggers the audio manager.
➢ The audio manager convert the raw data into playable mp3 file
format which is supported by the device.
➢ The audio is played in the audio player of the device.

16. Pseudo code of the modules
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Dept. of CSE,A.I.T 2013-2014
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.playerview_demo);
imageData = new ArrayList<byte[]>();
imageData.add(null);
imageData.add(null);
imageData.add(null);
imageData.add(null);
}

17. Dept. of CSE, 2013-2014 project proposal
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timer = new Timer();
myTimerTask = new MyTimerTask();
timer.schedule(myTimerTask, 5000, 20000);
Database dat = new Database(getBaseContext());
SQLiteDatabase db = dat.getWritableDatabase();
Cursor c1 = db.rawQuery("select * from USER where
IP='"+Totalipregistration.mip+"'", null);
Capturing the Image

18. private Camera openFrontFacingCameraGingerbread() {
int cameraCount = 0;
Camera cam = null;
Camera.CameraInfo cameraInfo = new
Camera.CameraInfo();
cameraCount = Camera.getNumberOfCameras();
for ( int camIdx = 0; camIdx < cameraCount;
camIdx++ ) {
Camera.getCameraInfo( camIdx, cameraInfo );
if ( cameraInfo.facing ==
Camera.CameraInfo.CAMERA_FACING_FRONT ) {
try {
cam = Camera.open( camIdx );
} catch (RuntimeException e) {
Log.e("camera", "Camera failed to
open: " + e.getLocalizedMessage());
}
}
}
Front Camera Enabling

19. <LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<EditText
android:id="@+id/editText1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp"
android:ems="10"
android:hint="Enter ip" >
<requestFocus />
XML for the UI Design

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Steps of communication
➢ Open a socket.
➢ Open an input stream and output stream to the socket.
➢ Read from and write to the stream according to the server's protocol.
➢ Close the streams.
➢ Close the socket

21. Future
• Global implementation of the app , remov
e the IP based local chatting system, and
make it internet based
• Buy Servers for saving the images , profile
info , passwords and username
• Deploy it to the Google Play

22. References
• www.google.com
• www.Wikipedia.com
• www.developer.android.com

23. 23
Thank you