Android is a world's mobile OS.

1. ANDROID TECHNOLOGY

3. WHAT IS ANDROID?
 A Software platform and operating system for mobile.
 It was developed in California.
 Android was developed by the Andy Rubin, Rich Miner, Nick
Sears and Chris White.
 Android was purchased by the GOOGLE in AUGUST,2005 for
50 – million $.

4. FEATURES OF ANDROID
 Android is not a single piece of hardware.
 Android supports wireless communication using:-
 3G Networks
 4G Networks
 802.11 Wi-Fi Networks
 Bluetooth Connectivity
 Open source.
 Multi-process system.

5. OPEN HANDSET ALLAINCE
 It’s consortium of several companies.
 This group of companies are allowed to use source code
of Android and develop applications.
 Reason for Nokia not to develop Android Mobiles is
Nokia is not part of OHA.

6. OHA COMPANIES

7. Layers of Android
Android consists of four layers,
 Application layer
 Application framework
 Libraries and Run time
 Kernel

8. ARCHITECTURE FOR LAYERS OF ANDROID

9. Application Layer
o Written in JAVA
o Pre-installed applications
E-Mail
 Web-Browser
 Calendar
 SMS
o It provides most of the basic applications.
o Applications are run simultaneously.

10. Application Framework
o It is used for implementing a structure.
o Facilitates the user with services to develop the
applications.
o The system manager includes content provider
and manager

11. Blocks in Application Framework
 Activity Manager – Life cycle of Applications.
 Content Provider – Data Sharing
 Telephony Manager – Voice Calls.
 Location Manager – Cell Tower & GPS
 Notification Manager – Alert Message

12. LIBRARIES AND RUNTIME
Libraries
 Multiple Languages are used,
• C
• C++
 A JAVA interface is used for calling a library
function.
 Blocks
•Lib c – C standard library
•SQL lite – Database Engine
•Web kit – Kernel of web browser
•Free Type – Bitmap & Vector

13. LIBRARIES AND RUNTIME
Runtime
 A Group of Libraries
 Runs on its own process.
 Assigned to own Linux user ID.
 Dalvik Virtual Machine
 A JAVA program is translated into Machine Code.
 Optimization for low memory requirements.

14. STRUCTURAL REPRESENTATION OF DVM

15. Kernel
o Android permits applications to run concurrently.
o Multi-Tasking is possible with this OS.
o Network function based on Linux Kernel code.
o Android implements its
 Mobile device drivers,
 Process
 Memory managements.

16. SALES
Android os
Windows phone
iOS
Symbian Os
Blackberry os
Others

17. Ios Vs Android Applications
0
50000
100000
150000
200000
250000
300000
350000
Android
ios

18.  Released on Febraury 9,2009.
 The focus of Android beta is testing
incorporating usability.
 Android beta will generally have many
more problems on speed and performance.
 First full version of android.
 Released on September 23, 2008.
 Wi-Fi and Bluetooth support.
 Quite slow in operating.
 copy and paste feature in the web browser is not present.

19.  Released on April 30, 2009.
 Added auto-rotation option.
 Copy and Paste feature added in the web
browser.
 Increased speed and performance but not
upto required level.
 Released on September 15, 2009.
 Voice search and Search box were added.
 Faster OS boot times and fast web
browsing experience.
 Released on October 26, 2009.
 Bluetooth 2.1 support.
 Improved typing speed on virtual
keyboard, with smarter dictionary.
 No Adobe flash media support.

20.  Released on May 20, 2010.
 Support for Adobe Flash 10.1
 No internet calling.
 Released on December 6, 2010.
 Updated User Interface with
high efficiency and speed
 Internet calling
 One touch word selection and copy/paste.
 New keyboard for faster word input.
 Android Honeycomb 3.0
 Released on February 22, 2011.
 Support for multi-core processors
 Ability to encrypt all user data.
 This version of android is only
available for tablets.

21.  Released on November 14, 2011.
 Virtual button in the UI.
 A new typeface family for the
UI, Roboto.
 Ability to shut down apps that are using
data in the background.
 Released on June 27, 2012.
 Latest version of Android.
 Smoother user interface.
 Bluetooth data transfer for android beam.
 Audio chaining.

22.  Released on September 3,2013.
 NFC host card elimination.
 UI updates for Google maps and alarms.
 Web-views based on chromium engine.
Android Lollipop 5.0
 Released on June 25,2014.
 Support for 64 bits.
 15 new languages are added.
 Wi-Fi calling support.
Android Marshmallow 6.0
 Released on October 5,2015.
 Finger print reader support.
 Double tap power button to open camera.
 MIDI support for musical instruments.

23.  Difficult to connect with all users.
 Memory size is small.
 Android doesn’t support
 Wireless keyboard
 Contact Exchange.
 Android operating system uses more amount of
battery as compared to normal mobile phones.
 As we call Android is world of applications, we
continuously need to connected with the internet
which is not possible for all the users.

24. Advantages
o Multitasking – Many apps may run simultaneously.
o User interface is easy.
o Support all GOOGLE services.
Disadvantages
o Battery life drains quickly.
o It is unstable.
o Virus application – mobile hang.

25.  Android is now stepping up in next level of
mobile internet.
 There are chances of Android Mobile sales
becomes more than iPhone.
 Google may launch another version of android
that starts N.
 This software also developed to use in PC’s.