Android is an open-source software stack that includes an operating system, middleware and key applications for mobile devices. It was developed by Google and uses the Linux kernel. The Android platform allows developers to write applications that are distributed through the Android Market or on a developer's own website. Applications are written in Java and run on the Dalvik virtual machine.

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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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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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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Market got you down??
• Self-publish!
• Upload APK to your own web server
• Use correct MIME type

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Data Synchronization
“ The best way to synchronize these various
pieces of information is to let the device do it on
its own while you’re not looking, so you never
have to think about it. Once you’ve logged into
your Google account on an Android-powered
phone it automatically synchronizes all your
accounts and Gmail information so everything is
always available.”

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Open Source Project
• http://source.android.com
• Apache 2.0 and GPL v2
• Git repository

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

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Dalvik VM
• Not a Java VM
• Design constraints: slow CPU, little RAM
• Will run on OS without swapspace

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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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Command line Tools
• aapt- Android asset packaging tool
• adb- Android debug bridge
• aidl- Android IDL compiler
• Emulator- Android emulator

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