Android - Basic Steps

Android Architecture

Linux Kernel

Contains the basic services

Security
Memory & process managenemt
File & network I/O
Device drivers
Specific Features as:

Power management
android shared memory
low memory killer

Libraries

System C libraries
Surface Mgr (Display management)
Media Framework (Audio / Video)
Webkit (Browser engine)
OpenGL (Grpahics engine)
Android Runtime (are the ones who runs the applications)

Core Libraries

Basic Java classes JAVA.* , JAVAX.*
App lifeclycle ANDROID.*
Internet / WS ORG.*
Unit test JUNIT.*

Dalvik virtual machine

run the applications as a classes.dex; transforms java bytecode to classes.dex file
this virtual machine is design to run in limited resources

https://www.youtube.com/watch?v=ptjedOZEXPM

Application Framework

Package Manager - Contains all the application in the device
Window Manager
View System - Provide the icons, tabs
Resource Manager - String, graphics & layouts (language)
Activity Manager - Manages app life-cycle and navigation stack
Location Manager - Provides location and movements
Notification Manager - Show the notification bar as in the sms

Applications

Standard applications

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