Architecture of Android

Androids Architecture is a layered mechanism by which individual components can run and perform actions based upon the users. The lowest layer is of the LINUX kernel which primarily interacts with hardware and the device drivers.
In the Linux Kernel we have libraries and android run-time that helps to work with different aspects.
for example, SQLite is a library to store data within the App we can have media library to interact with videos and picture.

The passing of data from one app to another is done through a concept called as Inter-process Communication (IPC).