Introduction In this article let us try to understand the android basics and learn it's architecture stack etc. The following topics will be covered in this article. • Brief summary of what Android is how it compares to other mobile platforms, and why developers should care about developing Android. • High-level overview of different layers of Android Architecture stack (ie. Linux Kernel, Libraries, Android Runtime, Application Framework, Applications) and components that make up the essential building blocks of an Android app (i.e. Activities, Services, Broadcast Receivers, Content Providers) • Bonus section: Intent, Fragment. Good understanding and knowledge of Java programming is highly recommended. Brief summary about Android Android is a Linux based operating system which is specifically designed for smart phones and tablets. It was originally created by Andy Rubin around dawn of the twenty first century. In year 2005, Google acquired a startu