What is Android !!

What is Android :

Android .. is open source operating system , open-source code mean that allows every developer for customize his code and republish it again under Google license ,and digging into the source code to see how a certain task is handled ,

Most people don’t know this, but Google didn’t start the Android project.

 The initial Android operating system was created by a small startup company in Silicon Valley known as Android, Inc., which was purchased by Google in July 2005.

The founders of Android, Inc., came from various Internet technology companies such as Danger, Wildfire Communications, T-Mobile, and WebTV.

Google brought them into the Google team to help create what is now the full-fledged Android mobile operating system.

What is android platform made from:

Android Is made from several elements united with each others to produce the android application :

 This elements is :

1-      Activities:

·         It is the building block of the User Interface (UI).

2-      Layout :

·         It is the Graphical user interface of the activity. But at some times the Activities have not a user interface.

3-      Resources :

·         It is static files holds the resources of your application.

4-      Android Manifest :

·         Here is where you declare what is inside your application—the activities, the services, and so on.

·         You also indicate how these pieces attach themselves to the overall Android system