Android software stack

this is the presentation on the android software stack which includes all the levels of the software stacks.

1. ANDROID SOFTWARE STACK
Arjun S B

2. Content
■Android Software Stack
■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. Android Software Stack

5. ■Android was created 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
–Linux kernel 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 on the 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 Android Runtime
–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 runtime layer 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
■The application 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
■Activity Manager
–Control all aspects of the application lifecycle.
–Control all the activity stack.

13. Application Framework
■Content Provider
–Allow applications to push and share the data with other application.

14. Application Framework
■Resource Manager
–It provide access to non-code embedded resources such as strings,
color setting and user interface layouts.

15. Application Framework
■Notification Manager
–Allow application to display alert to the user.
–Allow application to display notification to the user

16. Application Framework
■Location Manager
–Provide access to the location services allowing an application to
receive an updates about location changes..

17. Applications
■Android application can 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