Android (operating system): Difference between revisions

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Applications are usually developed in the [[Java (programming language)|Java]] language using the [[Android SDK|Android Software Development Kit]], but other development tools are available, including a [[Android NDK|Native Development Kit]] for applications or extensions in C or C++, [[Google App Inventor]], a visual environment for novice programmers and various [[Multiple phone web based application framework|cross platform mobile web applications frameworks]].
 
Applications can be acquired by end-users either through an app store such as [[Google Play]] or the [[Amazon Appstore]], or by downloading and installing the application's [[APK (file format)|APK]] file from a third-party site.<ref name="wired_alt_app_stores">{{cite web |url=http://www.wired.com/gadgetlab/2010/06/independent-app-stores-take-on-googles-android-market/ |title=Independent App Stores Take On Google's Android Market |date=June 11, 2010 |first=Priya |last=Ganapati |publisher=[[Wired News]] |accessdate=2012-02-20}}</ref> The Play Store application allows users to browse, download and update apps published by Google and third-party developers, hosted on Google Play, and is pre-installed on devices that comply with Google's compatibility requirements.<ref>{{cite web |url= http://source.android.com/compatibility/index.html |title=Android Compatibility |work=Android Open Source Project |accessdate=2012-02-20}}</ref> The app filters the list of available applications to those that are compatible with the user's device, and developers may restrict their applications to particular carriers or countries for business reasons.<ref>{{cite web |url=http://developer.android.com/guide/practices/compatibility.html |title=Android Compatibility |work=Android Developers |accessdate=2012-02-20}}</ref> As of JuneSeptember 2012, there were more than 600675,000 apps available for Android, and the estimated number of applications downloaded from the Play Store exceededwas 2025 billion.<ref name="appstats-2025-billion">{{cite web |url=http://wwwofficialandroid.engadgetblogspot.com/2012/06/2709/google-play-hits-60000025-apps/?icid=eng_latest_artbillion-downloads.html |title=Google Play hits 60025 Billion downloads, 675,000 apps, 20 billion totaland installsgames}}</ref> The operating system itself is installed on 400 million total devices.<ref name="2012io">{{cite web | title= There have now been over 400 million Android devices activated, with over a million new activations every day |publisher= official Android Engineering teams |date= 2012-06-27 |url= https://plus.google.com/108967384991768947849/posts/jHLD6HTfx9U }}</ref>
 
===Multitasking===