Repeat animation with new animated api

Question

React-native introduce new Animated API, I want to make a loop animation such as a bubble scale up then scale down and repeat that progress.

However I can n

Answer 1

Not sure if it's hacky, but I use this:

Animated.spring(this.state.rotation, {
  toValue: 5,
  stiffness: 220, // the higher value, the faster the animation
  damping: 0.000001, // never stop wiggle wiggle wiggle
}).start();

It's creating spring animation that will never (technically, for a very very very long time) stop waving.

For most of my cases it was enough. Also it has great performance as it does not require any JS tread action ever during animation.

If eventually you'd like to stop it gracefully:

Animated.spring(this.state.rotation, {
  toValue: 0,
  stiffness: 220, // the higher value, the faster the animation
  damping: 10, // never stop wiggle wiggle wiggle
}).start();

And it'll nicely 'slow down' until it stops.