This is a sample app for an open source Android library called RichPath
https://github.com/tarek360/RichPath
Full Animation Control on Paths and VectorDrawables: Animate any attribute in a specific path in the VectorDrawable

fillColor, strokeColor, strokeAlpha, fillAlpha, size, width, height, scale, scaleX, scaleY, rotation, translationX, translationY, trimPathStart, trimPathEnd, trimPathOffset

Just 3 Steps to Animate any path in the VectorDrawable.
1. Use the RichPathView to view the VectorDrawable.
2. Find a path by name.
3. Animate the path by using the RichPathAnimator.