2. Neeraj panwar 10EIAIT034 IET ,Alwar

3. 1. INTRODUCTION
2. ARCHITECTURE
2. DEVELOPMENT
4. APPLICATION
Neeraj panwar 10EIAIT034 IET
,Alwar

4. OHA (Open Handset Alliance ) ,a group of several
companies formed on 5th November 2007 to further
develop Android OS..
Neeraj panwar 10EIAIT034 IET ,Alwar

5. Neeraj panwar 10EIAIT034 IET ,Alwar

6. Name
Version
Cupcake
1.5
Donut
1.6
Éclair
2.1
Froyo
2.2-2.2.3
Gingerbread
2.3
Interesting fact
Honeycomb
Icecream Sandwich
3.2
4.0
Jelly Bean
Android Versions are 4.1
named in
alphabetical order after a dessert
Neeraj panwar 10EIAIT034 IET ,Alwar

7. Application Framework
Enabling reuse & replacement of component
Dalvik Virtual Machine
Optimized for mobile devices
Integrated Browser
Based on open source WebKit engine
Neeraj panwar 10EIAIT034 IET ,Alwar

8. Optimized graphics
powered by custom 2D graphics library 3D based on
open GL
SQlite
Structured data storage
Media Support
common audio , video and image format
Neeraj panwar 10EIAIT034 IET ,Alwar

9. GSM telephony
(hardware dependant)
Bluetooth,EDGE,3G,Wi-Fi(hardware dependant)
Camera ,GPS
(hardware dependant)
Rich Development Environment
SDK include device emulator, debugger, memory &
performance profiling , plug in for Eclipse IDE
Neeraj panwar 10EIAIT034 IET ,Alwar

10. Fig. Architecture 10EIAIT034 IET ,Alwar
of Android OS
Neeraj panwar

11.  Linux Version 2.6 as - h/w abstraction layer
 Proven driver model
 Security, Memory & Process Management
 Efficient computing resource management
 Stable and proven for mobile platform
Neeraj panwar 10EIAIT034 IET ,Alwar

12. Written in C/C++ - System C Library(libc)
Surface manager - composing different drawing
screens
Display/Graphics(SGL)-for 2D graphics
OpenGL | ES – 3D Graphics Library
Media Libraries
SQLite –RDB engine-light weight
WebKit–web browser engine–embeddable web view
Neeraj panwar 10EIAIT034 IET ,Alwar

13. 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
Neeraj panwar 10EIAIT034 IET ,Alwar

14. Manages the lifecycle of applications
Content provider :
Enable applications access data from other applications
Resource Manager :
Providing access to non-code resources
Window Manager
Notification manager 10EIAIT034 IET ,Alwar
Neeraj panwar

15.  SQLite Databases: relational database library
for storing and managing complex data
 Files: you can create, write, and read files
from the local storage or external media (SD
Cards)
 FileOutputStream, FileInputStream, and
Resources classes.
Neeraj panwar 10EIAIT034 IET ,Alwar

16. Java Source code
Interpreter only machine optimized
for use on low powered, low
memory devices like phones
Compile Java source using
Dalvik uses the Java programming
language but not the JVM
Java “class” documents
output from compilation
process
Dalvik is not a Java virtual machine.
It uses
“dex”.
bytecode
format
“javac”
Translate Java compiled
class files into “dex” files
called
Execute Under the Dalvik
virtual machine
Neeraj panwar 10EIAIT034 IET ,Alwar

17. 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 10EIAIT034 IET ,Alwar
Neeraj panwar

18. Fig: Emulator
Neeraj panwar 10EIAIT034 IET ,Alwar

19. Resume
(visible)
onResume()
onPause()
onResume()
Paused
(partially visible)
Started
(visible)
onStart()
Created
onStop()
onStart()
onRestart()
Stopped
(Hidden)
onCreate()
onDestroy()
Destroyed
Neeraj panwar 10EIAIT034 IET ,Alwar

20. Neeraj panwar 10EIAIT034 IET ,Alwar

21. Neeraj panwar 10EIAIT034 IET ,Alwar

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24. Neeraj panwar 10EIAIT034 IET ,Alwar

25. Android is a disruptive technology, which was
introduced initially on mobile handsets, but has
much wider potential.
Neeraj panwar 10EIAIT034 IET ,Alwar

26.  I made this presentation based on the information I found on
these web pages
1. http://code.google.com/android/ - Google Android
official webpage
2. http://www.openhandsetalliance.com/ - Open Handset
Alliance webpage
3. http://en.Wikipedia.org/wiki/Android
(mobile_phone_platform) Wikipedia information
4. http://googleblog.blogspot.com/ - Official Google Blog
Moreover, I found the interesting topics on Google Android
browsing Google Groups,and, of course, using Google search
by itself.
Neeraj panwar 10EIAIT034 IET ,Alwar

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28. Neeraj panwar 10EIAIT034 IET ,Alwar