Android is an open source software stack that includes an operating system, middleware and key applications for mobile devices. It features an application framework, Dalvik virtual machine, integrated browser, graphics and media support, telephony, Bluetooth, WiFi and hardware dependent sensors. Google developed Android to make mobile devices more accessible and powerful. The Android platform allows developers to write applications in Java that run on Dalvik and can be distributed through the Android Market or other app stores. Development tools include the Android SDK, Eclipse plugin, emulator and documentation to help developers create apps using intents, views and other Android APIs.

1. Android and Android Phones
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What is Android?
“Android is a software stack for mobile devices
that includes an operating system, middleware
and key application.”

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FEATURES
• Application framework – enabling reuse and
replacement of components.
• Dalvik virtual machine – optimized for mobile devices
.
• Integrated browser – based on the open source
WebKit engine.
• Optimized graphics - powered by a custom 2D
graphics library, hardware acceleration optional.
• Sqlite – for structured Data storage.

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• Media support – for common audio, video, and still
image formats.
• GSM Telephony – hardware dependent
• Bluetooth, edge, 3G, and Wifi – hardware dependent
• Camera, GPS, compass, and accelerometer –
hardware dependent
• Rich development environment – including a device
emulator, tools for debugging, memory and
performance profiling and a plugin for the Eclipse
IDE.

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Android
Google
GI and the Android Market
Android platform
Developer tools
Android programming

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Google’s Master Plan
Make the clod more accessible
Keep connectivity pervasive
Make the client more powerful

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Google
“We want the next killer application to be
written for cell phones.”

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GI Technical SPECS
Qualcomm MSM7201A, 528 MHz
ROM 256 MB
RAM 192 MB
4.60in x 2.16in x 0.62in
158 grams
Lithium ion battery, 1 150 mAH

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3G (HSDPA)
Touch screen, HVGA 320x480
QWERTY keyboard
3.2 megapixel camera
microSD expansion slot
GPS, compass, accelerometer

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Third party applications
Lifeaware.net
Maverick
Android locale

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Android Applications
Multiple applications, running simultaneously
User may switch between running
applications
Background services
Copy and paste

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Android Applications
Are written in a Java language
Run on the Dalvik virtual machine

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Distributing Android Application
Android market
Self-publish on your own website
Use a third party app store

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Android Market
$25 registration fee for developers
Developer receives 70% of each sale
Remaining amount goes to carriers
Google does not take a percentage

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Development Tools
Android SDK
Eclipse plug in
Android SDK
Android emulator
Command line tools
Documentation
Example application

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Intents
“an intent is a simple message object that
represents an ‘intention’ to do something.”
“an intent is an abstract description of an
operation to be performed.”

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Android Views
“a view is an object that knows how to draw itself on
the screen.”

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Additional topics
• Threading
• Security model
• Internationalization
• Power management
• Android management
• Data synchronization
• WiFi aAPI
• Bluetooth API

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What’s next for Android?
• More phones
• Virtual keyboard
• Bluetooth A2DP
• Multi-touch?

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Respecfully submitted to:
Prof. Erwin M. Globio,
MSIT
http://slideshare.net/jeannmaglasang