Downloaded 41 times
Android software stack
- 1.
- 2. Content ■ Android SoftwareStack ■ Linux Kernel ■ Libraries ■ Android Runtime ■ Application Framework ■ Applications
- 3. Android Software Stack ■Android OS consist of different layers of software. ■ Each layer groups several programs. ■ Each programs has its own service to provide. ■ Android architecture is a form of the software stack which consist of the four layers. ■ Android consist of a Linux kernel and collection of C, C++ libraries. ■ These services exposed from the application framework.
- 4.
- 5. ■ Android wascreated on the open source kernel of Linux. ■ It is the heart of the Android architecture that exist at the root of the android architecture. ■ It is responsible for device drivers, power management, memory management, device management and resource access. Linux Kernel
- 6. ■ Security – Linuxkernel handle the security between the application and the system. ■ Memory Management – Providing the freedom to develop our apps. ■ Process Management – It manage the process well, allocates resources to processes whenever they need. ■ Network Stack – It handle the network communication. Linux Kernel
- 7. Libraries ■ Running onthe top of the kernel. ■ It was developed with various features. ■ It consist of various C/C++ libraries with numerous of open source tools. ■ Some of the open source tools are, – The Android Runtime, Open GL, WebKit, Media Framework, Secure Socket Layer (SSL), etc.,
- 8. Libraries ■ The AndroidRuntime – It consist of core libraries of Java and ART ■ Open GL (Graphics Library) – Cross language, cross-platform Application Program Interface (API) is used to produce 2D, 3D computer graphics. ■ WebKit – This is a open source web browser engine. – It provide all the functionality to display web content and to simplify page loading.
- 9. Libraries ■ Media Framework –These libraries allow us to play audio, video and record audio, videos. ■ Secure Socket Layer (SSL) – These libraries are there for internet security.
- 10. ■ Android runtimelayer is a subset or part of the libraries layer. ■ It is the third section of the architecture. ■ It provide one of the key components which is called Dalvik VM. ■ It is act as a JVM which is specially designed for Android. ■ It consumes less memory and provides fast performance. Android Runtime
- 11. Application Framework ■ Theapplication framework layer provides many high-level services to application in the form of the Java. ■ Android framework includes the following key services.
- 12. Application Framework ■ ActivityManager – Control all aspects of the application lifecycle. – Control all the activity stack.
- 13. Application Framework ■ ContentProvider – Allow applications to push and share the data with other application.
- 14. Application Framework ■ ResourceManager – It provide access to non-code embedded resources such as strings, color setting and user interface layouts.
- 15. Application Framework ■ NotificationManager – Allow application to display alert to the user. – Allow application to display notification to the user
- 16. Application Framework ■ LocationManager – Provide access to the location services allowing an application to receive an updates about location changes..
- 17. Applications ■ Android applicationcan be found in the top of the layer. ■ At the application layer we can write our own application and install it and use it. ■ These applications are interact with the users. ■ Example : Games, Message, Contacts, etc.,
- 18. Reference ■ https://www.javatpoint.com/android-software-stack ■ https://www.tutorialspoint.com/android/android_architecture.htm ■https://www.geeksforgeeks.org/android-system-architecture/ ■ https://dzone.com/articles/android-software-stack-and