Added listener.

[pedroadame]

No description provided.

[rahatarmanahmed]

I'm on vacation right now, but glancing at it it looks good (unlike some other PRs i've gotten cough#2*cough*). One thing I might suggest is adding a CircularProgressViewAdapter class that implements CircularProgressViewListener with empty methods. See this SO answer for a good explanation on what an Adapter is.

[pedroadame]

Done + bonus ;)

[rahatarmanahmed]

Excellent, thanks.

Do note I did change how the listeners work a bit. Biggest change is allowing multiple listeners. onModeChange now only triggers when using setIndeterminate with a different value than it had previously. And the listener interface and adapter class are in their own files.