I am trying to build a workout timer app for android sdk.

I want to learn how to build a circle and how to slowly reduce it. Take a look a image below for example. I want to get the same effect but was ever able to get it.

Any idea how can I go about this?

I am not sure how to post a image on daniweb. So please take a look at this link:

http://stackoverflow.com/questions/30316243/how-to-create-a-circle-in-android-sdk