This document provides an overview of the components and structure of an Android application project. It discusses getting started with Eclipse, the main project components including source code, generated code, libraries, resources and the manifest file. It also describes the core application building blocks - activities for screens, intents for actions, services for background tasks, broadcast receivers for system messages, and content providers for sharing data. Each component is concisely defined, with services explained as running in the background for tasks like downloading or music playback.

1. ANDROID APPLICATION
PHASE – I
COMPUTER SCI. DEPARTMENT
AMIRAJ COLLEGE OF ENGG. & TECH.

2. Contents:
 Getting Started
 Project Components
 Application Building Blocks

3. Getting Started with ECLIPS:

4. Project Components:
 src – your source code
 gen – auto-generated code
 Included libraries
 Resources
i. Drawables (like .png images)
ii. Layouts
iii. Values (like strings)
 Manifest file

5. src – Source code
src folder contains package of the Application and the external
.java files created by the developer.

6. gen – Auto generated code
gen folder contains auto generated .java files for supporting
environment of the application.

7. Included libraries
This includes files require to run an application on targeted sdk
as well as minimum sdk i.e. selected by developer.

8. Manifest file
Manifest contains security and link info, hardware access info,
minimum OS release info, etc.

9. Application Building Blocks:
 Activity
 Intent
 Service
 Broadcast Receiver
 Content Provider

10. Activity
Activity is a single screen with user interaction. An activity may
contain zero or number of fragments. Each activity can then start
another activity in order to perform different actions.

11. Intent
What represents your action is called an Intent. It is the
description of action during switch between the activity.

12. Service
Service is the faceless component which run in background.
Music player is an example of service. We don’t need to put it on
the screen to hear songs.
Downloading via internet is also an example of service. It goes
on while the user is interacting with other applications.
Service does not stop on closing of an application. It keeps on
running in background until it’s task is done or the user manually
destroys it.
For example, a service might handle network transactions, play
music, perform file I/O, or interact with a content provider, all
from the background.

13. Broadcast Receiver
Broadcast Receiver receives the system generated messages
about system intents and display notification on occurrence of
an intent of the Android System.
For example, if the battery of your android device is low then the
Android System will generate the message regarding to the LOW
BATTERY and broadcast receiver receives that message from
Android System and display the On-Screen notification regarding
the subject.

14. Content Provider
It simply enables sharing of data across applications.
It provides access to the data of system application i.e.
Phonebook, Gallery, etc.
Android itself includes content providers that manage data such
as audio, video, images, and personal contact information.
With some restrictions, these providers are accessible to any
Android application.

15. Thank You
Presented By,
Atufa I. Saiyed (121080107043)
Raiyan J. Akhunji (121080107044)