Android a glimpse by kishan phadte(BCA, Third Year undergraduate at DM's College, Assagao Goa)
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 Rubins words ”smarter mobile devices that are more aware of its owners 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 devices October 2008, Android available as open source December 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.
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
Features Reuse and replacement of components Dalvik virtual machine Integrated browser Optimized graphics SQLite Media support GSM Telephony Bluetooth, EDGE, 3G, and WiFi Camera, GPS, compass, and accelerometer Rich 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 componentsActivity ◦ 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 texthttp://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