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

for more details about context, read this article. I will explain that briefly.

If you wanna know what is context you must know what it does...
for example getContext() is one of the methods that retrieve context. In getContext(), Context is tied to an Activity and its lifecycle. We can imagine Context as layer which stands behind Activity and it will live as long as Activity lives. The moment the Activity dies, Context will too. this method gives list of functionalities to activity, like:

Load Resource Values,
Layout Inflation,
Start an Activity,
Show a Dialog,
Start a Service,
Bind to a Service,
Send a Broadcast,
Register BroadcastReceiver.

now imagine that :

Context is a layer(interface) which stands behind its component (Activity, Application…) and component’s lifecycle, which provides access to various functionalities which are supported by application environment and Android framework.