What is ANDROID
• Google's Android is an open-source platform that's
currently available on a wide variety of smart phones.
• Android is a software stack for
mobile devices that includes an
operating system, middleware and
THE ANDROID’S BEGINNIG
Android, Inc. was founded in Palo Alto,
California,USA in October 2003
• Andy Rubin
(co-founder of Danger)
• Rich Miner
(co-founder of Wildfire Communications, Inc.),
• Nick Sears
(once VP at T-Mobile)
Open Handset Alliance
• Google’s android OS is an Operating System
that can be used in any android capable
device (Android smart phones)
• It is used in wide verity of android smart
phones & android tablets that are
manufactured by different companies
The software stack is split into Four Layers::
• The application layer
• The application framework
• The libraries and runtime
• The kernel
•The architecture is based on the Linux2.6 kernel.
Android use Linux kernel as its hardware abstraction
layer between the hardware and rest of the software.
•It also provides memory management, process
management, a security model, and networking, a lot
of core operating system infrastructures that are
robust and have been proven over time
•The next level up is the native libraries.
Everything that you see here in green is written
in C and C++.
Android Run Time
•The Android Runtime was designed specifically for
Android to meet the needs of running in an embedded
environment where you have limited battery, limited
memory, limited CPU.
•The DVM runs something called dex files, D-E-X and
these are byte codes that are the results of converting at
build time. Class and JAR Files.
Android Run Time
•This is in blue, meaning that it's written in
the Java programming language.
•The core library contains all of the collection
classes, utilities, IO, all the utilities and tools
that you’ve come to expected to use.
•This is all written in a Java programming language and
the application framework is the toolkit that all
•These applications include the ones that come with a
phone like the home applications, or the phone
•It includes applications written by Google, and it
includes apps that will be written by you.
•So, all apps use the same framework and the same
•And the final layer on top is Applications.
•This is where all the applications get written.
•It includes the home application, the contacts
application, the browser, and your apps.
•And everything at this layer is, again, using the same
app framework provided by the layers below.
•The ability for anyone to customize the Google Android platform
•The consumer will benefit from having a wide range of mobile
applications to choose from since the monopoly will be broken by
•Users will be able to customize a mobile phones using Google
Android platform like never before
•Features like weather details, opening screen, live RSS feeds and
even the icons on the opening screen will be able to be customized
•As a result of many mobile phones carrying Google Android,
companies will come up with such innovative products like the
•In addition the entertainment functionalities will be taken a notch
higher by Google Android being able to offer online real time
LIMITATIONS OF ANDROID
Development requirements in
Eclipse IDE (optional)
Firefox mobile isn't coming to android
because of android limitations
We hope that the next versions of Android have
overcome the actual limitations and that the
future possibilities became a reality and may this
software is also developed to use in PC’s also.