How to implement a material design circular progress bar in android

Question

I want to make a material design circular progress bar like the one in Inbox by Gmail android app. How do I achieve this (in pre-lollipop devices)?

Am trying to achie

Answer 1

The platform uses a vector drawable, so you can't reuse it as in in older versions.
However, the support lib v4 contains a backport of this drawable : http://androidxref.com/5.1.0_r1/xref/frameworks/support/v4/java/android/support/v4/widget/MaterialProgressDrawable.java It has a @hide annotation (it is here for the SwipeRefreshLayout), but nothing prevents you from copying this class in your codebase.