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Presented by:Pooja Garg
I.T-III rd year0905613076
Introduction to Android
Open software platform for mobile development
A complete stack – OS, Middleware, Applications
An Open Handset Alliance (OHA) project
Powered 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
Smart phone market
VersionsName Version
Cupcake 1.5
Donut 1.6
Eclair 2.1
Froyo 2.2
Gingerbread 2.3
Honeycomb 3.0
Icecream 2.4
Android Features
• Application Framework• Dalvik virtual machine• Integrated browser based on the open source
WebKit engine• 2D and 3D graphics APIs with HW• Sqlite (Structured data storage)• Media Support (common audio,video and image format)• Bluetooth, EDGE, 3G, and WiFi• Camera, GPS, compass, and accelerometer• Rich 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
Activity IntentReceiverServiceContentProvider
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
04/08/2023
1. A foreground process
2. A visible process 3. A service process 4. A background
process 5. An empty process
APPLICATION
Application Development Steps
Download 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>>
Application development contd.,
>>Running Your First Application
Output in the emulator
Porting Applications to Mobile
Resource files are bundled to .apk file archive
Bundled 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://developer.android.com
Thank you
