Introduction to AndroidOpen software platform for mobile

developmentA complete stack – OS, Middleware,

ApplicationsAn Open Handset Alliance (OHA) projectPowered by Linux operating systemFast application development in JavaOpen source under the Apache 2 license

What is the Open Handset Alliance (OHA)?

→ It's a consortium of several companies

Sagar

Smart phone market

VersionsName VersionCupcake 1.5

Donut 1.6

Eclair 2.1Froyo 2.2

Gingerbread 2.3

Honeycomb 3.0

Icecream 2.4

Android FeaturesApplication FrameworkDalvik virtual machineIntegrted browser based on the open source WebKit

engine2D and 3D graphics APIs with HWSqlite (Structured data storage)Media Support (common audio,video and image

format)Bluetooth, EDGE, 3G, and WiFiCamera, GPS, compass, and accelerometerRich Development Environment

Android Architecture

Android applications are compiled to Dalvik bytecode

Write app in Java

Compiled in Java

Transformed to Dalvik bytecode

Linux OS

Loaded into Dalvik VM

Application building blocks

ActivityIntentReceiverServiceContentProvider

DEVELOPMENT TOOL

Android Emulator -A virtual mobile device that runs on our computer -use to design, debug, and test our applications in an actual Android run-time environment

Android Development Tools Plugin -for the Eclipse IDE – adds powerful extensions to the Eclipse integrated environment

Dalvik Debug Monitor Service (DDMS) -Integrated with Dalvik-this tool let us manage processes on an emulator and assists in debugging

Life cycle of application

05/03/2023

1. A foreground process

2. A visible process 3. A service process 4. A background

process 5. An empty process

APPLICATION

Application Development StepsDownload and Install the Android SDK and

Test the Emulator.Installing JDK and JRE(1.5 or above)Install Eclipse.Install ADT plugin for Eclipse

Creating HelloWorld Application

Application development contd.,New > Project… Select Android project in wizard

menu

Application development contd.,Main Activity>>

Main.xml>>

AndroidManifest.xml>>

Porting Applications to MobileResource files are bundled to .apk file

archiveBundled by aapt toolOne .apk file archive is a Single application

FINDINGS

Android uses proven technology like Java, XML andLinux

There is an initial learning effort Android doesn‘t have many of the limitations

of current mobile platforms It offers a rich API for application

development Android is still in beta Android development is fun

Questions ?

http://goo.gl/3Ajlqt

Thank you