Android Overview

Android provides a rich application framework that allows you to build innovative apps and games for mobile devices in a java language environment.

If you are new to Android development, it’s important that you understand the following fundamental concepts about the Android app framework:

Apps provide multiple entry points:

• Android apps are built as a combination of distinct component that can be invoked individually.
• For instance, an individual activity provides a single screen for a user interface and a service independently performs work in the background.

Apps adapt to different devices:

• Android provides an adaptive app framework that allows you to provide unique resources for different device configurations.
• For example, you can create different XML layout files for different screen sizes and the system determines which layout to apply based on the current device’s screen size.

What is Android?

• Android is an open source and Linux-based operating system for mobile devices such as Smartphone’s and tablet computers.
•  Android was developed by the Open Handset Alliance, led by Google, and other companies.
• Android is a complete set of software for mobile devices such as tablet computers, notebooks, Smartphone’s, electronic book readers, set-top boxes etc.
• It contains a Linux-based OS, middleware and key mobile applications.
• It can be thought of as a mobile operating system. But it is not limited to mobile only.

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