Android Platform

Android software layers : Android has seperate layer for different task. This method of layer seperation divide android processing into different groups. Each layer is responsible for their respective task.

• Base layer : this layer is used for linux processing which manage all android device task related to device power, file etc.
• Library management : this layer is used for android media, database etc. management.
• Android Runtime management : this is used for dalvik virtual machine.
• Application framework management : this is used for content provider, notification etc.
• Front end management : this is used for front end management.

Android SDK comes with follwing supported libraries.

• android.jar : this contains android supported library
• documention.html and docs directory : this is provided for android developer help so they can easily understand android and it's library.
• Samples directory : this directory contains simple program for android developers.
• Tools directory : this directory is used by developer for command line access to android.