seminar android

7/31/2019 Seminar Android

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Group Members

Anushek Kumar:- Roll No.-5001

Arijit Bhowmik:- Roll No.-5002

Arnab Sen:- Roll No.-5003

Avik Chatterjee:- Roll No.-5004

Bandana Singh:- Roll No.-5005

Debarchana Basak:- Roll No.-5006


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INTRODUCTION

Linux based operating system for mobile devices such as smartphones andtablet computers

Developed by the Open Handset Alliance(OHA) led by Google

Applications(apps) primarily written in a customized version ofJava

Availability of third-party apps download through online stores such asGoogle Play(formerly Android Market)

Unveiling of the Android platform was announced on 5 November 2007 withthe founding of OHA

The Android Open Source Project(AOSP) is tasked with the maintenance andfurther development of Android

Licensing:- Android is under the version 2 of the Apache SoftwareLicense(ASL)


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foundation

Founded in Palo Alto, California, United States in October, 2003

Co-founders:- Andy Rubin(co-founder of Danger, Inc.), Rich Miner(co-founder of Wildfire Communications Inc.), Nick Sears(once VP at T-Mobile), and Chris White(headed design and interface development at

WebTV)

Objective:- To develop smarter mobile devices that are more aware of itsowners location and preferences

Acquisition by Google of Android, Inc. was done on August 17, 2005


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Open handset Alliance(OHA)

Logo of Open Handset Alliance(OHA)


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Open Handset Alliance(OHA)

It is a consortium of 86 hardware, software, and telecommunications

companies devoted to advancing open standards for mobile devices

Some of the companies include Broadcom Corporation, Google, HTC, Intel,LG, Marvell Technology Group, Motorola, Nvidia, Qualcomm, SamsungElectronics, Sprint Nextel, T-Mobile, and Texas Instruments, etc.

OHA was unveiled on November 5, 2007 and on the same day their firstproduct, Android, a mobile device platform built on the Linux kernel version2.6

On December 2008, 14 new members joined, including ARM Holdings,Atheros Communications, Asustek Computer Inc., Garmin Ltd., HuaweiTechnologies, Packetvideo, Softbank, Sony Ericsson, Toshiba Corp., andVodafone Group Plc.


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Open Handset Alliance


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Android Open Source Project(AOSP)

Led by Google, the AOSP is tasked with the maintenance and development ofAndroid

Goal:- to create a successful real-world product that improves the mobileexperience for end-users

Also maintains the Android Compatibility Program


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Android Version History

A no. of updates since its release, each fixing bugs and adding new features

Each version is named after a dessert in alphabetical order

RECENT RELEASES:-2.3 Gingerbread3.0 Honeycomb which were again subdivided into 3.1 Honeycomb and3.2Honeycomb4.0 Ice-cream Sandwich5.0 Jelly Bean


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Basic Design

Android consists of a kernel based on the Linux kernel

Middleware, libraries and APIs written in C

Application software running on an application framework which uses Java-compatible libraries based on Apache harmony

Android uses the Dalvik Virtual Machine with just-in-time compilation to runDalvik dex-code(Dalvik Executable), usually translated from Java bytecode

Main hardware platform- ARM architecture


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Linux

Based on Linux kernel with further architectural changes by Google

Initial features added by Google such as wakelocks were rejected by thekernel

Linux kernel developer Rafael J. Wysocki added a patch that improves the

mainline Linux wakeup events framework

In December 2011, the Android Mainlining Project for integration ofadditional features in Linux kernel starting from the kernel version 3.3


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System Architecture


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Features

HANDSET LAYOUTS:- larger VGA,2D graphics library, 3D graphics librarySTORAGE:- SQLite, a lightweight relational databaseCONNECTIVITY:- GSM/EDGE, IDEN, CDMA, EV-DO, UMTS, Bluetooth,Wi-Fi, LTE, NFC, WiMAXMESSAGING:- SMS and MMS, including threaded messaging service andnow Android Cloud to Device Messaging(C2DM)

Multiple Language SupportWEB BROWSER:- based on open-source Webkit layout engine, coupled withChromes V8 JavaScript engineJAVA SUPPORT:-Most applications written in Java but no Java VM availableMEDIA SUPPORT:- WebM, H.263, H.264(3GP or MP4 container), MPEG-4

SP, AMR, AMR-WB(in 3GP container), AAC, HE-AAC(in MP4 or 3GPcontainer), MP3, MIDI, Ogg Vorbis, FLAC, WAV, JPEG, PNG, GIF, BMP, WebPTETHERING:- Allows a phone to be used as wireless/wired Wi-Fi HotspotBLUETOOTH:- Supports A2DP, AVRCP, sending files(OPP), accessing thephonebook(PBAP), voice dialling and sending contacts between phones


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Google Play

Formerly called Android Market

It is the online software store developed by Google for Android devices

Some applications include Google Voice, Sky Map, Google Goggle, Finance,

Maps Editor, Places Directory, Google Search, Gesture Search, GoogleTranslate, Google Shopper, Listen for Podcasts and My Tracks


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Security

Android applications run in a sandbox, an isolated area of the operatingsystem that does not have access to the rest of the systems resources

Antivirus used for Android:- AVG Technologies, Avast!, F-secure, Kaspersky,McAfee, Symantec


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Privacy

Ability to access Wi-Fi access points

Run location databases like Foursquare, Latitude, Places and to deliverlocation-based ads

Has a third-party monitoring software, Taintdroid


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Usage Share


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Conclusion

We can only hope that the next versions of Android will overcome the actual

limitations of the previous versions and the future possibilities will become areality.


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seminar android

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