The document provides an overview of Android including: 1) Android is an open source platform led by Google and based on the Linux kernel for mobile devices. 2) The Android architecture includes layers for the Linux kernel, libraries, Android runtime, and application framework. 3) Developing Android applications requires the Android SDK, Eclipse IDE, and tools like the Android emulator and DDMS.

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2. Introduction To OHA Introduction To Android The Android Platform Android Architecture Linux Kernel Libraries Android Runtime Application Framework Anatomy Of An Android Application Development Tools Software Requirements Conclusion Overview android OS| 2

3. Introduction to OHA android OS| 3 It was established in 2007 led by Google Inc. It is a collaboration of several companies devoted to advancing open standards for mobile devices OHA stands for Open Handset Alliance

4. Open Handset Alliance android OS| 4

5. Introduction To Android android OS| 5 A software platform and an operating system for mobile devices Based on the Linux kernel What is Android? It is intended to be a complete stack that includes the OS, middleware and applications.

6. android OS| 6 The Android Platform Software Features :- Integrated browser based on the open source WebKit engine SQLite for data storage Media codecs support for common audio, video & image formats Dalvik Virtual Machine optimized for mobile devices

7. android OS| 7 Hardware Features :- Cellular networking : GSM,EDGE,3G LAN : Bluetooth and Wi-Fi Graphics Hardware Acceleration Camera, GPS and Compass Touch Screen and accelerometer for motion sensing The Android Platform

8. android OS| 8 Android Architecture

9. android OS| 9 Linux Kernel :- Linux Version 2.6 Security, Memory & Process Management Proven driver model Efficient computing resource management Stable and proven OS infrastructure Android Architecture

10. android OS| 10 Libraries :- Written in C/C++ Display/Graphics Media Libraries SQLite - DB engine WebKit - web browser engine Android Architecture

11. android OS| 11 Android Runtime :- Includes a set of core libraries that provides most of the functionality. Every Android application runs in its own process Dalvik VM executes files in the (.dex) format Device can run multiple VMs efficiently Android Architecture

12. android OS| 12 Application Framework :- Content Providers :- Resource Manager :- Notification Manager :- Activity Manager :- Enable applications access data from other applications Providing access to non-code resources Enables all applications to display alerts in the status bar Manages the lifecycle of the application Android Architecture

13. android OS| 13 Anatomy Of Android Application There are four building blocks for an Android application :- Activity :- Intent Reciever :- Service :- Content Provider :- a single screen to execute in reaction to an external event (Phone Ring) code that is long-lived and runs in the background (Media Player) an application's data to be shared with other applications

14. android OS| 14 Development Tools Software Requirements :- Android SDK 2. Eclipse IDE + ADT (Android Development Tools)

15. android OS| 15 Development Tools The Android SDK includes a variety of custom tools that help you develop mobile applications on the Android platform.Three of the most significant tools are -: 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 ) It 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.

16. android OS| 16 Devices Running Android Samsung Asus HTC Garmin Basic Android Mobiles

17. android OS| 17 Devices Running Android HTC Nexus One Sony Ericsson Xperia X10 Latest Android Mobiles

18. android OS| 18 Conclusion Android is open source 3 rd Party application development system User friendly SDK Use of various latest technologies

19. android OS| 19 References Android Development http://developer.android.com/ Android Mobile OS By Michael T. Strove Google I/O Session videos Hosted on YouTube Android Operating System Wikipedia Search

20. Any questions? www.google.com android OS| 20