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ADICHUNCHANAGIRI INSTITUTE OF TECHNOLOGY, CHIKMAGALUR 2010-2011

ADICHUNCHANAGIRI INSTITUTE OF TECHNOLOGY, CHIKMAGALUR 2010-2011 DEPARTMENT OF COMPUTER ENGINEERING SUBJECT SEMINAR ON ANDROID OPERATING SYSTEM UNDER THE GUIDANCE OF

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ADICHUNCHANAGIRI INSTITUTE OF TECHNOLOGY, CHIKMAGALUR 2010-2011

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  1. ADICHUNCHANAGIRI INSTITUTE OF TECHNOLOGY, CHIKMAGALUR2010-2011 DEPARTMENT OF COMPUTER ENGINEERING SUBJECT SEMINAR ON ANDROID OPERATING SYSTEM UNDER THE GUIDANCE OF MR. SANGAREDDY B. KURTAKOTI B.E.,M.TECH LMISTE LECTURER, DEPT OF CS&E

  2. ANDROID • Android is a software stack for mobile devices that includes an operating system, middleware and key applications. • Android is a software platform and operating system for mobile devices based on the Linux operating system and developed by Google and the Open Handset Alliance.

  3. Google Acquires Android Inc: • In July 2005, Google acquired Android Inc, which was a small startup company based in Palo Alto. Open Handset Alliance Founded: • On 5 November 2007, the Open Handset Alliance was formed. • Google, HTC, Intel, Motorola, Qualcomm, T-Mobile, Sprint Nextel and NVIDIA and many more were members and Android was released to market as an Open Source OS.

  4. Features of Android OS: • Application framework • Dalvik virtual machine • Integrated browser • Optimized graphics • SQ Lite • Media support • GSM Telephony • Bluetooth, EDGE, 3G, and WiFi • Camera, GPS, compass, and accelerometer • Rich development environment

  5. Architecture of Android OS:

  6. Linux Kernel: • Android Architecture is based on Linux 2.6 kernel. Manage security, memory management, process management, network stack. • CDMA and GPRS network support • Bluetooth 1.2 and Wi-Fi support • Digital audio support for mp3 and other formats • Support for Linux and other third-party operating systems • Java hardware acceleration and support for Java applications • Qcamera up to 6.0 megapixels • gpsOne – solution for GPS • and lots of other.

  7. Libraries : • Written in C/C++ • Surface Manager • SQLite • WebKit • Media Framework

  8. Android Runtime: • Dalvik Virtual Machine. • Android gives an integrated tool “dx”, which converts byte code from .jar to .dex file which is much more efficient. • Designed for Android running with limited battery, CPU, memory and data storage. • As the result, it is possible to have multiple instances of Dalvik virtual machine running on the single device at the same time.

  9. Application Framework: • Written in Java language. It is a toolkit that all applications uses and are developed. • The Activity Manager manages the life circle of the applications and provides a common navigation back stack for applications • The Package Manager keeps track of the applications, which are installed in the device. • Telephony Manager contains of a set of API necessary for calling applications. • Content Providers was built for Android to share a data with other applications • The View System generates a set of buttons and lists used in UI.

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

  11. 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.

  12. Here, we see an Android device emulator being displayed:

  13. What makes Android special? • A truly open, free development platform based on Linux and open source. • A component-based architecture inspired by Internet mash-ups. Parts of one application can be used in another. • Automatic management of the application life cycle. Programs are isolated from each other by multiple layers of security, provide system stability. • High quality graphics and sound. Uses OpenGL for graphics and supports MP3, MP4 etc for audio and videos.

  14. Conclusion: • Android is open to all: industry, developers and users • Participating in many of the successful open source projects • Aims to be as easy to build for as the web • Google Android is stepping into the next level of Mobile Internet

  15. Future Enhancement: • Android is likely to be the OS of choice • Google Android Sales to Overtake iPhone in 2012 • The OHA is committed to make their vision a reality: to deploy the Android platform for every mobile operator, handset manufacturers and developers to build innovative devices

  16. Thank You!!!

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