This presentation give introduction to android os, android sdk, android versions,history and its architecture

1. ANDROID Platform
By,
Uma

2. Android
 OperatingSystem(OS) for mobile devices such as
smart phones and tablet computers.
 Developed by the Open Handset Alliance(OHA), led by
Google.
 Google releases the Android code as open-source.

3. Android SDK
 Android SDK-Software Development Kit.
 Creates applications for Android OS.
 Applications developed by Java.
 Provides API libraries and developer tools.
 To build, test, and debug applications for Android.

4. Why Android?
 Open-source
 Builds on top of JAVA.
 World's most popular mobile platform.
 Not limited to mobile applications.

5.  Provided strong competition to Symbian, iOS and
Black Berry OS.

7.  Android is also used in Tablet which referred as a
mobile computer larger than a mobile phone
integrated into a flat touch screen.

8. Life of Android
 Android, Inc. was founded in US, October 2003 by
Andy Rubin , Rich Miner, Nick Sears, and Chris White.
 It is developed by the Open Handset Alliance, led by
Google.

9. Cupcake
1.5
Donut
1.6
Eclair
2.0/2.1
Froyo
2.2.x
Gingerbre
ad
2.3.x
Honecom
b
3.0
I
Icecream
Sandwich
4.0.x
Jelly Bean
4.1 KitKat
4.4

10. Android Architecture

11. Linux Kernel
 Security
 Memory management,
 Process management
 Network stack
 Driver model.
 Abstraction layer-between hardware and software
stack.

12. Libraries
 Surface Manager -composites 2D and 3D graphic
layers
 Media Libraries - support playback and recording

13.  SQLite - a powerful and lightweight relational
database engine
 FreeType - bitmap and vector font rendering
 SGL - 2D graphics engine
 LibWebCore - a modern web browser engine

14. Android Runtime
 Core libraries- provides functionality available in
Java programming language.
 DVM-Java language compiler that have been
transformed into the .dex format

15. Application Framework
 Activity Manager-manages the lifecycle of
applications
 Views-to build an application, including lists,
grids, text boxes, buttons, and even an
embeddable web browser

16.  Content Providers- to access data from other
applications
 Resource Manager - providing access to non-
code resources localized strings, graphics,
and layout files
 Notification Manager - to display custom alerts
in the status bar

17. Applications
 Set of core applications - Email client, SMS
program, calendar, maps, browser, contacts, and
others.

18.  Reuse and Replacement of components
 DVM-Dalvik Virtual Machine
 Integrated Browser-Webkit Engine
 2D and 3D Graphics
 SQLite
 Media Support
 Bluetooth,EDGE,3G and Wi-Fi
 Camera,GPS,Compass,Accelerometer
 AVD-Android Virtual Device