3. What is Android?
Android is a Linux-based operating system for
mobile devices such as smartphones and tablet
computers, developed by Google in conjunction
with the Open Handset Alliance. Android is the
world's most popular mobile platform. With
Android you can use all the Google apps you know
and love, plus there are more than 600,000 apps
and games available on Google Play to keep you
entertained, alongside millions of songs and books,
and thousands of movies.
4. What is Android?
Android devices are already smart, and will only get
smarter, with new features you won't find on any
other platform, letting you focus on what's important
and putting you in control of your mobile experience.
Android has a large community of developers writing
applications ("apps") that extend the functionality of
the devices. Developers write primarily in a
customized version of Java, and apps can be
downloaded from online stores such as Google Play
(formerly Android Market), the app store run by
Google, or third-party sites.
5. What is Android?
Millions of people already use Android
because it makes your mobile device so
much more powerful and useful. On
Android, the home screen, web browser,
email and everything in between are
designed to make your life easier. And
because Android is open, you can create a
unique mobile experience that’s just right
for you.
6. What is Android?
In June 2012, there were more than 600,000 apps
available for Android, and the estimated number of
applications downloaded from Google Play was 20
billion.
Android became the world’s leading smartphone
platform at the end of 2010.[14] For the first quarter
of 2012, Android had a 59% smartphone market
share worldwide.[15] At the half of 2012, there were
400 million devices activated and 1 million
activations per day.[16]
8. ANDROID’S FEATURES
Widgets
Put the important stuff
right within reach and
interact with your favorite
apps directly from your
home screen with widgets
— see the latest sport
scores, view your favorite
photos, check the weather
or peek at your inbox all
without having to open
different apps or leave the
home screen.
9. ANDROID’S FEATURES
Notifications
An easy-to-read
notification tray gives
you quick access to your
calls, incoming texts, and
new emails in a non-
intrusive way.
10. ANDROID’S FEATURES
Multi-tasking
With Android, you can
quickly and seamlessly
switch between apps and
pick up whatever you
were doing. Juggling
multiple tasks at once on
a mobile device has
never been easier.
11. ANDROID’S FEATURES
Voice typing and
actions
Control your Android
device with your voice.
Simply touch the
microphone on the
keyboard and start
talking to write emails,
SMS, or any other text —
more than 30 languages
supported. Text appears
in real time, so there’s no
waiting.
12. ANDROID’S FEATURES
Photos and videos
Capture special moments
with great photos and
videos, explore your
shots and quickly share
your favorites in any way
that you want.
13. ANDROID’S FEATURES
Web browser
The web browser
available in Android is
based on the open-source
WebKit layout engine,
coupled with Chrome's
V8 JavaScript engine.
The browser scores
100/100 on the Acid3
test on Android 4.0.
14. ANDROID’S FEATURES
Screencapture
Android supports capturing a
screenshot by pressing the
power and volume-down
buttons at the same time.[61]
Prior to Android 4.0, the only
methods of capturing a
screenshot were through
manufacturer and third-party
customizations or otherwise
by using a PC connection
(DDMS developer's tool).
These alternative methods are
still available with the latest
Android.
16. DESIGN
Android consists of a kernel based on the Linux
kernel 2.6 and Linux Kernel 3.x (Android 4.0
onwards), with middleware, libraries and APIs
written in C and application software running on an
application framework which includes Java-
compatible libraries based on Apache Harmony.
Android uses the Dalvik virtual machine with just-in-
time compilation to run Dalvik dex-code (Dalvik
Executable), which is usually translated from Java
bytecode.[34]
17. DESIGN
The main hardware
platform for Android
is the ARM
architecture. There is
support for x86 from
the Android x86
project,[6] and Google
TV uses a special x86
version of Android.
18. APPLICATIONS FOR
ANDROID
APPLICATIONS ARE USUALLY DEVELOPED IN
THE JAVA LANGUAGE USING THE ANDROID
SOFTWARE DEVELOPMENT KIT, BUT OTHER
DEVELOPMENT TOOLS ARE AVAILABLE,
INCLUDING A NATIVE DEVELOPMENT KIT
FOR APPLICATIONS OR EXTENSIONS IN C OR
C++, GOOGLE APP INVENTOR, A VISUAL
ENVIRONMENT FOR NOVICE PROGRAMMERS
AND VARIOUS CROSS PLATFORM MOBILE
WEB APPLICATIONS FRAMEWORKS.
19. APPLICATIONS FOR ANDROID
Google Play
Google Play is an online
software store developed
by Google for Android
devices. An application
program ("app") called
"Play Store" is preinstalled
on most Android devices
and allows users to browse
and download apps
published by third-party
developers, hosted on
Google Play.
20. APPLICATIONS FOR ANDROID
Security
Android applications run
in a sandbox, an isolated
area of the operating
system that does not
have access to the rest of
the system's resources,
unless access
permissions are granted
by the user when the
application is installed.