don’t see how this would work on pre-v21?
Ken Yee

The idea wasn’t really to provide a solution… the idea was just to talk about what the commands mean and why changing the values results in animation. If you want to animate on older versions of Android, there are plenty of libraries that can help you with that. I would check out Lottie by AirB&B or just use AnimatedGif’s on older versions of Android.