Android OS

Simon Heinen, Sophia Krause, Andreas Molitor, Artur Nowak

Web Technologies – Prof. Dr. Ulrik Schroeder – WS 2010/11 1 The slides are licensed under a

Creative Commons Attribution 3.0 License

Overview Android OS

History

Fragmentation

Dissemination

Android Apps

Composition

Development

Live Demo

Summary

Literature

Web Technologies 2

Android OS Operation System for Mobile Devices

Based on Linux-Kernel

Dalvik Virtual Machine

Open Source

Product of the Open Handset Alliance (OHA)

Web Technologies 3

Android OS Supports the following features

Wireless exchange of information

GSM/EDGE, UMTS, bluetooth, W-LAN, near field communication

Web-Browser: 93/100 (Acid3-Test)

Audio-, Video-, Picture-Codecs

H.263, H.264, MPEG-4, AAC, MP3, OGG, JPEG, PNG, BMP, …

touchscreen (multitouch)

Determination of location and movement

GPS, acceleration sensor, magnetometer, barometer, gyroscope

VoIP

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History 09.02.2009: Version 1.1

30.04.2009: Version 1.5 (Cupcake)

15.09.2009: Version 1.6 (Donut)

26.10.2009: Version 2.0 (Eclair)

03.12.2009: Version 2.0.1

12.01.2010: Version 2.1

20.05.2010: Version 2.2 (Froyo)

06.12.2010: Version 2.3 (Gingerbread)

Q1 2011: Version 2.4 (Honeycomb)

Q3/4 2011: Version 3.0 (Icecream)

Web Technologies 5

Fragmentation

Web Technologies 6

Platform Distribution

Android 1.5 4.7%

Android 1.6 7.9%

Android 2.1 35.2%

Android 2.2 51.8%

Android 2.3 0.4%

Dissemination

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Market share

300.000 Android phones activated every day

110.000.000 phones next year

More than 200 different devices

OHA 44%

Apple 26%

RIM 24%

Microsoft 3%

Others 3%

US smart phone market Shipments by OS vendor, Q3 2010

Dissemination

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Android Composition

Web Technologies 9

Android Development

Web Technologies 10

Free and open source Android SDK and NDK available

Integration into Eclipse

No development or publishing costs

Debugging tools

DDMS

Android Emulator

…

App-Inventor

Development in Eclipse

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Development in Eclipse

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Development in Eclipse

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Live Demo

Live Demo

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AppInventor

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Live Demo

Live Demo

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Summary Android

Based on Linux-Kernel (2.6.x)

Dalvik Virtual Machine

Open Source

>200 different devices

Development

Fragmentation (Android-Versions, different devices)

Java, C/C++

Full access to framework

Access to libraries only through framework API

Web Technologies 17

Literature

Tutorials, Forum, Demo, …

http://www.anddev.org/

AppInventor: http://www.youtube.com/watch?v=xR90pekj8CQ

Links

Android: http://www.android.com/

Android Development: http://developer.android.com

AppInventor: http://appinventor.googlelabs.com/about/

Literature 18