BOSCOCHAT

(A FREE WI-FI CHATROOM IN ANDROID)

( PROJECT REPORT)

Submitted to

ASSAM DON BOSCO UNIVERSITY

By

Samaresh Debbarma

Roll No: DC20011MCA0034

Dhrubajit Das

Roll No: DC2011MCA0003

in partial fulfilment for completion of Minor Project of

FIFTH SEMESTER

MASTER OF COMPUTER APPLICATION

DEPARTMENT OF COMPUTER SCIENCE AND INFORMATION TECHNOLOGY

DON BOSCO COLLEGE OF ENGINEERING AND TECHNOLOGY AZARA,GUWAHATI 781 017,

ASSAM, INDIA.

MCA(2011- 2014)

CERTIFICATE

This is to certify that the Project Report entitled “BOSCO CHAT” submitted by Samaresh

Debbarma (Roll .No : DC2011MCA0034) and Dhrubajit (Roll.No.-DC2011MCA0003) to

the Assam Don Bosco University, Guwahati, Assam, in partial fulfilment of the requirement for

Minor project of 5th semester of Master of Computer Applications. It is a bonafide record of the

project work carried out by them under my supervision during the year 2013.

External Guide:

Internal Guide:

CERTIFICATE

This is to certify that the Project Report entitled “BOSCO CHAT” submitted by Samaresh

Debbarma(Roll.No.-DC2011MCA0034) and Dhrubajit Das(Roll.No.-DC2011MCA0003)

to the Assam Don Bosco University, Guwahati, Assam, in partial fulfilment of the requirement

for the Minor project of 5th semester of Computer Applications. It is a bonafide record of the

project work carried out by them during the year 2013.

Head of the Department Head of the Institution

EXAMINATION CERTIFICATE

This is to certify that Samaresh Debbarma bearing Roll. No: DC2011MCA0034 and

Dhrubajit Das bearing Roll.No.-DC2011MCA0003 of the DEPARTMENT OF COMPUTER

SCIENCE AND INFORMATION TECHNOLOGY has carried out the Project Work in a

manner satisfactory to warrant its acceptance and also defended it successfully.

I wish them all the success in their future endeavours.

Examiners:

01. External Examiner:

02. Internal Examiner:

03. Internal Examiner:

DECLARATION

I hereby declare that the Dissertation work entitled “BOSCO CHAT” submitted to the Assam

Don Bosco University, Guwahati, Assam, in partial fulfilment of the requirement for Minor

project of 5th semester of Master of Computer Applications. It is an original work done by me

under the guidance of Mr. PRANAB DAS and has not been submitted for the award of any

degree.

(Signature of the student) (Signature of student)

Samaresh Debbarma DHRUBAJIT DAS

Roll Number :DC2011MCA0034 Roll Number:DC2011MCA0003

DEPARTMENT NAME:

DEPARTMENT OF COMPUTER SCIENCE AND INFORMATION TECHNOLOGY.

ACKNOWLEDGEMENT

This acknowledgement transcends the reality of formality when we would express deep gratitude

and respect to all those people who helped supported, guided and inspired us throughout the

completion of this project.

We would like to express my deep gratitude and whole hearted thanks to our Guide Mr Pranab

Das (Assistant Professor, Department of Computer Science and IT, Don Bosco College of

Engineering and Technology) for his valuable guidance, precious suggestions and

encouragement in completing the project successfully.

We express my sincere thanks to Mrs. Bobby Sharma and Mr. Rupam Sharma (Project

Coordinators, Department of Computer Science and IT, Don Bosco College of Engineering

and Technology) for giving us an opportunity to work with them and providing valuable

guidance.

We wish to convey my sincere thanks to Dr.Y.Jayanta Singh (H.O.D, Department of

Computer Science and IT, Don Bosco College of Engineering and Technology) for his

support throughout the project.

We wish to convey my sincere thanks to Prof. Monoranjan Kalita (Principal, Don Bosco

College of Engineering and Technology) for his continuous support.

We are also grateful to all the administrative staff and the technical staff of Computing and

Computer Science and Information Technology Department, people who provided us the useful

and necessary information needed for this project, friends who tested our applications in their

mobile devices and gave their suggestions and valuable comments. Lastly, we thank all our

family, friends and well wishers.

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ABSTRACT

KEYWORDS: Wi-Fi, Chat Room, Peer to Peer, Broadcast, User Datagram Protocol (UDP).

The proliferation of wireless and mobile devices such as personal digital assistants and mobile

phones has created a large demand for mobile software applications such as Chatting application

software. In addition, the realization and widespread usage of peer-to-peer (P2P) networking

have drastically increased the number of applications utilizing these technologies. The

convergence of mobile and P2P networking have generated increasing interest in the mobile

peer-to-peer (MP2P) community. In this project, we describe the design and development of

BoscoChat based on Wi-Fi network architecture. This application allows users to discover,

communicate with one another. We present two different facets of designing the BoscoChat:

network infrastructure design, and user-interface design. The software has been fully

implemented and tested on a variety of mobile devices for use in a campus setting. By studying

the design and implementation of BoscoChat, we hope to benefit the entire mobile application

development community by providing common models and insights into developing MP2P

software.

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CONTENTS

Title Page

ACKNOWLEDGEMENTS ............................................................................................ i

ABSTRACT ...................................................................................................................... ii

LIST OF FIGURES ......................................................................................................... iii

ABBREVIATIONS .......................................................................................................... iv

INTRODUCTION.............................................................................................................1

CHAPTER 1 SCOPE OF THE PROJECT

1.1 Objective of the project ........................................................................................... 2

1.2 Motivation ................................................................................................................ 2

1.3 Hypothesis ............................................................................................................... 2

1.3 Resource Utilized .................................................................................................... 2

CHAPTER 2 PROPOSED METHODOLOGY

2.1 Water fall model of the project ............................................................................... 3

CHAPTER 3 FEASIBILITY STUDY

3.1 Operational feasibility study ................................................................................... 4

3.2 Technical feasibility study ...................................................................................... 4

3.3 Economic feasibility study .................................................................................... 4

CHAPTER 4 REQUIREMENT ANALYSIS

4.1 Technical hardware details ..................................................................................... 5

4.2 Technical software details ...................................................................................... 5

CHAPTER 5 UNIFIED MODELING LANGUAGE DIAGRAMS

5.1 Use Case Diagram ................................................................................................... 6

5.2 Activity Diagram ..................................................................................................... 7

5.3 Work Break Down Structure Diagram................................................................... 8

CHAPTER 6 IMPLEMENTATION

6.1 Start Screen ............................................................................................................... 9

6.2 Sign in Activity ......................................................................................................... 10

6.3 Create chat room ..................................................................................................... 10

6.4 Send and receive message ........................................................................................ 11

6.5 Help ........................................................................................................................ 12

CHAPTER 7 TESTING

7.1 Unit Testing .............................................................................................................. 9

7.2 Module Testing ......................................................................................................... 10

CONCLUSION.................................................................................................................13

REFERENCE....................................................................................................................14

LIST OF FIGURES

Figure Title Page

1.1 Proposed methodology ................................................................................. 3

1.2 Use case ......................................................................................................... 6

1.3 Activity Diagram ........................................................................................... 7

1.4 Work Break Down Structure (WBS) .......................................................... 8

1.2 Start Screen .................................................................................................... 9

1.3 Sign in Activity .............................................................................................. 10

1.2 Create chat room .......................................................................................... 10

1.3 Send and receive message ............................................................................. 11

1.2 Help ............................................................................................................... 12

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ABBREVIATIONS

Wi-Fi Wireless Fidelity

UDP User Datagram Protocol

AOSP Android Open Source Project.

APK Android executable file

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INTRODUCTION

‘BOSCO’ is a name extracted from the full name Don Bosco, The Founder of selesian

congregation and ‘CHAT’ which means chatting .With the availability of mobile

computing devices, mobile users have a natural tendency to share information between

them. Often mobile users want to have a meeting, even though it is not planned in

advance and there is no Internet connection available. For instance, there may be

situations that employees find themselves together in a meeting room, or friends or

business acquaintances may encounter each other in an airport terminal, or some scholars

and researchers may meet in a hotel ballroom for a conference or workshop. In those

situations, requiring each user to connect to a wide area network to communicate with

each other may not be convenient or practical because of the lack of Internet connectivity

or because of the time or cost required for such a connection, So in those situations the

“WiFi Chat Room” would help the employees to send and receive the information whit

the employees want to share. This application will be based on “Android Operating

system”. The chat messages sent are of two types:1. Public Chat Messages 2. Private chat

Messages Public messages are delivered to all other chat clients nearby, while private

messages are directed to a specific recipient. As in most chat applications, there is no

history and clients do not expect to receive messages sent earlier or when disconnected.

Disconnection can occur at any time while clients are exchanging messages.

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CHAPTER 1

SCOPE OF THE PROJECT

1.1 OBJECTIVE OF THE PROJECT

The main objective of this project is to connect different people that are in the range of

same Wi-Fi access point. This will be completely free and no external source of internet

will be needed. The chat will be public, means messages will be broadcasted to every

user that is connected. This application will be developed in the Java programming

language using the android software development kit(SDK).The development platform or

integrated development environment(IDE) is eclipse using the android development

tools(ADT) Plug-in. We will develop an application where user does not need any web

browser to chat with other user. It has its own user interface. The user can connect to any

available Access Point for chat with another user connected with same access point.

Tethering and portable hotspot utility available on android can also be used for creating

an access point. User Datagram Protocol (UDP) is used for sending the packets across the

network.

1.2 MOTIVATION

The main motivation of this project is to explore the concepts of mobile application

development in android. Chatting applications are the most liked and downloaded

applications from android market. A chat application that is simple and easy to be used in

a mobile handset can become a hit with millions of mobile users. The motive of this

application is to learn and experience developing a chatting application in android

targeting a small set of users. The knowledge obtained in this process can be applied later

in the career to develop any similar kind of application focusing large group of users.

1.3 HYPOTHESIS

For developing any application, development tools are the most important. For small

Independent Software Developers, (ISVs) market size is the most important.

1.4 RESOURCE UTILIZATION

The main resources used during this project were our academic reader, and Android

AAKASH tablet .

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CHAPTER 2

PROPOSED METHODOLOGY

2.1 Water Fall model of the proposed methodology

Figure: 2.1 Waterfall model of the proposed methodology

3

ANALYSIS PHASE

1)Analysis different application already

available in market.

2)Study to make new application for user

DESIGN PHASE

1)Make Data flow Diagram.

2)Make Use Case Diagram.

4)Make Activity diagram.

CODING PHASE

TESTING PHASE

1) Program Testing

2)Module Testing

3)Testing the responsiveness of the system.

CHAPTER 3

FEASIBILITY STUDY

3.1 OPERATIONAL FEASIBILITY STUDY

The proposed system is operationally feasible as the final output of the project can be used by

Android user and it will be easy and user friendly for use.

3.2 TECHNICAL FEASIBILITY STUDY

If we see from technical perspective the project is feasible, as the software required for

developing the project is a freeware, easy to use and it doesn’t demand any non-existing

technology.

3.3 ECONOMIC FEASIBILITY STUDY

Economically, this project doesn’t raise any issues, as the project itself is planned or aimed at

user needs. The resources required for this project are bare minimum. It doesn’t demand any

additional resources. The user will be able to download the application from proper link and after

that they can easily use it.

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CHAPTER 4

REQUIREMENT ANALYSIS

The project involved analyzing the design of few applications so as to make the application

more user friendly. To do so, it was really important to keep the navigations from one screen to

the other well ordered and at the same time reducing the amount of typing the user needs to do.

In order to make the application more accessible, the android version had to be chosen so that it

is compatible with most of the Android devices.

4.1 TECHNICAL HARDWARE DETAILS

The development of the proposed system requires Desktop or laptop and android handset

4.2 TECHNICAL SOFTWARE DETAAILS

Desktop or laptop Operating System: Windows XP (32-bit), Windows Vista (32- or 64-bit),

Windows 7 (32- or 64-bit) or Windows 8 (32-bit or 64-bit) ,Eclipse IDE: Eclipse 3.6.2 (Helios)

or greater Eclipse JDT plug-in (included in most Eclipse IDE packages) JDK 7 Android

Development Tools plug-in (recommended)

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CHAPTER 5

UNIFIED MODELING LANGUAGE DIAGRAMS

5.1 USE CASE DIAGRAM

host

user

Figure-2.1use case diagram

Search for

accesspoint

Search for

chat room

Request join

chat room

Display list of

all chat room

Received id

View chat

history

Display list of

available user

Select to chat

with single and

multiple user

Initiate chat

process

Send

message and

emotion

Receive

message or

emotion

Leave chat

room

Create

chat room

Grant chat

room

Send id

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5.2 ACTIVITY DIAGRAM Host user

No

Yes

Yes

single user

multiple user

No

Search for access point Search for access point

Display list of available user

Search for chat room

Display of all chat room

Request to

join chat

room

Grant request

Send id Receive id

Start

chat

Create chat room

Select to chat

single or

multiple user

Initiate room Initiate chat process

Send message / emotion Send message / emotion

Receive message /emotion Receive message /emotion

View chat history

Leave chat room

Figure:-5.2Activity diagram

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5.3 WorkPlan (WBS)

Prepare the physical data model

Prepare the data dictionary

CHAPTER 5

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WIFI CHAT IN ANDROID

(90 days)

1) Requirement

Aalysis

(7 days)

1.1 Requirement Analysis

(5 days)

1.2 Collecting the

required item

(2 days)

2. Design

(21 days)

2.1 Prepare the

primary design

(7 days)

2.2 Prepare

the detailed

design

(7 days)

2.3 Prepare the

document design

(7 days)

4. Testing

(32 days)

4.1 Unit testing

(8days)

4.2 Module testing

(8 days)

4.3 Sub System

testing (8 days

4.4 Responsive

testing (8 days)

3. Coding

(30 days)

3.1 Phase 1

(15 days)

3.2 Phase 2

(15 days)

Figure-2.2 work break down structure

CHAPTER 6

IMPLEMENTATION

6.1 START SCREEN

welcomes the user to the application.

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<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

xmlns:android="http://schemas.android.com/apk/res/

android"

android:id="@id/RltFirst"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="@drawable/boscochat"

android:focusable="true"

android:focusableInTouchMode="true"

android:orientation="vertical" />

6.2 SIGN ACTIVITY

The user log in the application

5.3 CREATE CHAT ROOM

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5.4 SEND AND RECEIVE MESSAGE

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5.5 HELP

CHAPTER 7

TESTING

7.1 UNIT TESTING

Unit testing, also known as component testing refers to tests that verify the functionality of

specific section of code, usually at the function level. In an object-oriented environment, this is

usually at the class level, and the minimal unit tests include the constructors and destructors.

Module Tests

7.2 MODULE TESTING

Module tests are typically dynamic white-box tests. This requires the execution of the software

or parts of the software. The software can be executed in the target system, an emulator,

simulator or any other suitable test environment. Within the range of dynamic tests the state of

the art distinguishes between structural and functional tests. The structural dynamic tests are

also called "module tests" or "unit tests". A module test is performed with the knowledge of the

module internals in mind. I.e. especially the branches and paths in functions and modules.

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CONCLUSION

BOSCO CHAT (A Wi-Fi Chat Room in Android) is a new approach for local communications

in mobile world. Wi-Fi proximity is a main idea behind Wi-Fi chat. If you and your potential pal

can see at this moment the same Wi-Fi access point (Wi-Fi network) than it is very probably that

you can see each other. In other words, it is very likely that you are close to each other. Close in

the geographical sense, of course. So, BOSCO CHAT lets you create discussions (forums) as

well as live web chats associated with Wi-Fi access points. It is yet another way to create hyper-

local group messaging.

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REFERENCES

[1] http://developer.android.com/guide/topics/fundamentals.html/: OL. Google

Android Developers, AndroidDevelop Guide.

[2] M. Fengsheng Yang, Android Application Development Revelation, China

Machine Press, 2010.

[3] Mark L. Murphy, Beginning Android, Springer Verlag New York, Inc., 2010.

[4] http://developer.android.com/guide/components/index.html/: Android Components.

[5] http://vidhatha.com/android-projects/: Project Overview

[6] http://developer.android.com/reference/java/net/DatagramPacket.html: Datagram

Packet Class

[7] http://developer.android.com/reference/java/net/InetAddress.html: InetAddress Class

[8] http://developer.android.com/reference/android/app/NotificationManager.html:

NotificationManager Class

[9] http://developer.android.com/reference/java/net/DatagramSocket.html: Datagram

Socket Class

[10] http://developer.android.com/reference/android/net/wifi/WifiManager.html: Wi-Fi

Manager Class

[11] http://developer.android.com/reference/android/net/wifi/WifiInfo.html: Wi-Fi

Info Class

[12] D. Muthukumaran et al., Measuring Integrity on Mobile Phone Systems, Proc.

13th ACM Symp. Access Control Models and Technologies, ACM Press, 2008,

pp. 155–164.

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