Kishan Phadte26T.Y.BCA

A glimpse…

Overview

• Android, was founded in Palo Alto, California, United States in October, 2003 by

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

at WebTV) to develop, in Rubin's words ”smarter mobile devices that are more aware of its

owner's location and preferences"

Introduction

Software platform from Google and the Open Handset Alliance

July 2005, Google acquired Android, Inc.November 2007, Open Handset Alliance formed to

develop open standards for mobile devicesOctober 2008, Android available as open sourceDecember 2008, 14 new members joined Android

project

Updates and Major Releases• Android has seen a number of updates since its original

release. These updates to the base Operating System typically fix bugs and add new features.

• On 30 April 2009, the official 1.5 (Cupcake) update for Android was released.

• On 15 September 2009, the 1.6 (Donut) SDK was released.

• On 26 October 2009 the 2.0 (Eclair) SDK was released• On 3 December 2009 the 2.0.1 SDK was released.• On 12 January 2010 the 2.1 SDK was released.

Platform Versions

[Source : http://developer.android.com/resources/dashboard/platform-versions.html ]

Android & Hardware

• Built-in Apps ≡ Apps created in SDK• Leverage Linux kernel to interface with

hardware for better performance• Open source platform promotes development

from global community

FeaturesReuse and replacement of componentsDalvik virtual machineIntegrated browserOptimized graphicsSQLiteMedia supportGSM TelephonyBluetooth, EDGE, 3G, and WiFiCamera, GPS, compass, and accelerometerRich development environment

App fundamentals

• Apps are written in Java• Bundled by Android Asset Packaging Tool• Every App runs its own Linux process• Each process has it’s own Java Virtual Machine• Each App is assigned a unique Linux user ID• Apps can share the same user ID to see each

other’s files

App components Activity◦Present a visual user interface for one focused

endeavor the user can undertake◦Example: a list of menu items users can choose

fromServices◦Run in the background for an indefinite period of

time◦Example: calculate and provide the result to

activities that need it

Broadcast Receivers◦Receive and react to broadcast announcements◦Example: announcements that the time zone has changed

Content Providers◦Store and retrieve data and make it accessible to all

applications ◦Example: Android ships with a number of content

providers for common data types (e.g., audio, video, images, personal contact information, etc.)

Intents◦Hold the content of a message◦Example: convey a request for an activity to present an

image to the user or let the user edit some text

http://developer.android.com/sdk/installing.html

App Inventor

• Install JDK update 7.1 or higher• Run App inventor setup • Download App inventor for android codeblocks

from appinventor.mit.edu/http://beta.appinventor.mit.edu/#638397

References & Bibliography• Kickstart Android by E-caffeine (high on

creativity)• Android : accessing sensors & networks by Cindy atherton.• Wikipedia

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