Android Basic By Ankit Shandilya

Ankit Shandilya
Android Basic
By

What Makes Android Special ?
ankitshandilya2007.com

A truly open, free development
platform based on Linux and open
source:
 Handset makers like it because they can use and
customize the platform without paying a royalty.
 Developers like it because they know that the
platform “has legs” and is not locked into any one
vendor that may go under or be acquired.

A component-based architecture
inspired by Internet mash ups :
 Parts of one application can be used in
another in ways not originally envisioned
by the developer. You can even replace
built-in components with your own
improved versions.
 This will unleash a new round of creativity
in the mobile space.

Tons of built-in services out of
the box:
 Location-based services use GPS or cell tower
triangulation to let you customize the user
experience depending on where you are
 computing and synchronization. Browser and
map views
 can be embedded directly in your
applications. All these built-in
 capabilities help raise the bar on functionality
while lowering your

Automatic management of the
application life cycle:
 isolated from each other by multiple layers of
security, which will
 provide a level of system stability not seen
before in smart phones.
 The end user will no longer have to worry
about what applications are active or close
some programs so that others can run.
 Android is optimized for low-power, low-
memory devices in a fundamental

High-quality graphics and
sound:
 graphics and animation inspired by Flash
are melded with 3D
 accelerated OpenGL graphics to enable
new kinds of games and
 business applications. Codec's for the
most common industry standard
 audio and video formats are built right in,
including
 H.264 (AVC), MP3, and AAC.

Portability across a wide range of
current and future hardware:
 All your programs are written in Java and
executed by Android’s
 Dalvik virtual machine, so your code will be
portable across
 ARM, x86, and other architectures. Support for
a variety of input
 methods is included such as keyboard, touch,
and trackball.
 User interfaces can be customized for any
screen resolution and

The Birth of Android
 Google acquired the startup company
Android Inc. in 2005 to start the
development of the Android Platform
 The key players at Android Inc. included
Andy Rubin, Rich Miner, Nick Sears, and
Chris White

 Enter Andy Rubin and his Android
idea. Rubin approached Google
seeking financing for his idea. He got a
purchase offer that lit the rumor mills
on fire.
 Suddenly, the buzz on the Net was that
Google would soon release a
cellphone to compete with other web-
enabled cellphones

Introducing Android
 Android is the first open source mobile
application platform that has the potential to
 make significant inroads in many markets.
When examining Android there are a
 number of technical and market-related
dimensions to consider. This first section
 introduces the platform and provides context
to help you better understand Android
 and where it fits in the global cell phone
scene.

The Android platform
 Android is a software environment built for mobile devices.
It is not a hardware platform.
 Android includes a Linux kernel-based OS, a rich UI, end-
user applications,
 Code libraries, application frameworks, multimedia
support, and much more. And,
 Telephone functionality is included! While components of
the underlying OS
 are written in C or C++, user applications are built for
Android in Java. Even the built-in
 Applications are written in Java. With the exception of
some Linux exploratory
 The Android SDK. ankitshandilya2007.com

First Mobile?
 The Android SDK was first issued as an
“early look” release in November 2007. In
September
 2008, T-Mobile announced the availability
of the T-Mobile G1, the first smartphone
based
 on the Android Platform.

Android SDK Features
 The true appeal of Android as a development
environment lies in the APIs it provides.
 As an application-neutral platform, Android gives
you the opportunity to create applications that are
as.
 Much a part of the phone as anything provided out
of the box. The following list highlights some of the
 Most noteworthy Android features:
 No licensing, distribution, or development fees
 Wi-Fi hardware access
 GSM, EDGE, and 3G networks for telephony or data
transfer, allowing you to make or receiveankitshandilya2007.com

 calls or SMS messages, or to send and retrieve
data across mobile networks
 Comprehensive APIs for location-based services
such as GPS
 Full multimedia hardware control including
playback and recording using the camera and
 microphone
 APIs for accelerometer and compass hardware
 IPC message passing
 Shared data stores
 An integrated open source WebKit-based
browser

Open Handset Alliance and Android
 This barrier to application development began to crumble in
November of 2007 when
 Google, under the Open Handset Alliance, released Android.
The Open Handset Alliance
 Sprint Nextel, and HTC, whose goal is to create a more open cell
phone environment.
 The first product to be released under the alliance is the mobile
device operating system,
 With the release of Android, Google made available a host of
development tools
 and tutorials to aid would-be developers onto the new system.
Help files, the platform
 software development kit (SDK), and even a developers’
community can be found at
 Google’s Android website, http://code.google.com/android.
This site should be your

Sprint Nextel
• T-Mobile
• Motorola
• Samsung
• Sony Ericsson
• Toshiba
• Vodafone
• Google
• Intel
• Texas Instruments

High-level view of the Android
software stack
User Applications
Java Libraries
Activities/Services
UI/Graphics/Views
Resources/Content Providers
Telephone/Camera
Multimedia
SQLite Database
Http/Connectivity
Java SE/Java Apache
Dalvik VM
Core C Libraries
Linux

Thank You

Android Basic By Ankit Shandilya

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