Android Architecture

This part we will learn about Android architecture or Android Software Stack Android Architecture is 5 layer stack those are

1. Linux Kernel
2. Native libraries
3. Android Runtime
4. Android Framework
5. Applications 

Linux Kernal : 

• This is Heart Of android Architecture
• It Exists at the root 
• it is Only Responsible for the Drivers and memory management & Power management

Native Libraries :

• It is Present On Top Of Linux-Kernel
• it consists Of open libraries Such as OpenGL, SQLite Media...Etc
• The WebKit library is responsible for browser support, SQLite is for database, FreeType for font support, Media for playing and recording audio and video formats.

Android Runtime :

• we have DVM (Dalvik Virtual Machine) which is responsible to run android application.
• DVM is like JVM but it is optimized for mobile devices.
• It consumes less memory and provides fast performance.

Android Framework :

• Top of the Android Runtime we have android Framework.
• Android framework includes APIs such as UI (User Interface), telephony, resources, locations, Content Providers (data) and package managers.
• It provides a lot of classes and interfaces for android application development.

Applications  : 

• Top of The Framework we have Applications such as home, contact, settings, games, browsers.
• These applications work with the help of Android API services.

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