Android Introduction

Android IntroductionAndroid is a software stack for mobile devices that includes an operating system, middleware and key applications.

A business alliance consisting of 47 companies to develop open standards for mobile devices

Android Inc.founded in Palo Alto, california ,united states in October 2003 by Andy Rubin[co-founder of danger ],rich miner[co-founder of wildfire communication Inc.],nick sears[once VP at T-mobile ], and Chris white[headed design and interface development at web TV] to develop.HISTORY OF ANDROID

Phones, Tablets

The software stack is split intoFour Layers::

The application layer

The application framework

The libraries and runtime

The kernel

ANDROID ARCHITECTURE

Android provides a set of core applications:Email ClientSMS ProgramCalendarMapsBrowserContactsEtc

All applications are written using the Java language.

ANDROID VERSION

The Android Runtime was designed specifically for Android to meet the needs of running in an embedded environment where you have limited battery, limited memory, limited CPU.

Dalvik is the process virtual machine in Google's android operating system. It is the software that runs the apps on android devices. Dalvik is thus an integral part of android ,which is typically used on mobile devices such as mobile phones and tablet computers. Programs are commonly written in java and compiled to byte code.

Android Run Time

Limitations of android :

Development requirements inJavaAndroid SDKEclipse IDE (optional)Bluetooth limitations:- Android doesn't support:Bluetooth stereoContacts exchangeModem pairingWireless keyboardsFirefox mobile isn't coming to android because of android limitations Apps in Android Market need to be programmed with a custom form of Java Mozilla and the Fennec won't have thatThere are no split or interval times available.Small memory size.Continuous Internet connection is required

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