Welcome to Training for Android developers . Here you'll find sets of lessons within classes that describe how to accomplish a specific task with code samples you can re-use in your app. Android tutorial or android development tutorial covers basic and advanced concepts of android technology. Our android tutorial is developed for beginners and professionals. Android is a complete set of software for mobile devices such as tablet computers, notebooks, smartphones, electronic book readers, set-top boxes etc. It contains a Linux-based Operating System , middleware and key mobile applications . It can be thought of as a mobile operating system. But it is not limited to mobile only. It is currently used in various devices such as mobiles, tablets, televisions etc. From android development tutorial here anyone can learn how to develop an android app. Introduction Android is an open source mobile operating system that combines and builds upon