What is 'Context' on Android?

Question

In Android programming, what exactly is a Context class and what is it used for?

I read about it on the developer site, but I am unable to understand it

Answer 1

The Context is the android specific api to each app-s Sandbox that provides access app private data like to resources, database, private filedirectories, preferences, settings ...

Most of the privatedata are the same for all activities/services/broadcastlisteners of one application.

Since Application, Activity, Service implement the Context interface they can be used where an api call needs a Context parameter