android architecture or Android software stack is categorized into five parts:
- linux kernel
- native libraries (middleware),
- Android Runtime
- Application Framework
- Applications
Let's see the android architecture first.
Android Runtime
The first mobile handset, the T-Mobile G1, was released in the United State in October 2008. Android runtime is a second layer of bottom. Its provides key component called by Dalvik Virtual Machine it's a Java Virtual Machine for Android.
Rather than being a mobile OS created of single hardware implementation, Android is designed to support a large variety of hardware platform, from Smart phone to tablets and televisions.
Application Framework
Android application framework supports the features :-
- Webkit engine based on integrated browser.
- Optimized graphics by the advanced graphics library.
- SQL structured data
- Video, Audio and image format media support.
- Device emulator etc.
Application
- GSM telephony
- Network connection such as Bluetooth,Edge,3G,WiFi
- Camera
- Game
- GPS etc.
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