HungNT

> UIView.animate(withDuration: 1) { > self.yellowView.value = 80 > } hi, You must put it into **main thread** for **animation.** _DispatchQueue.main.async { //[.repeat, .curveEaseOut, .autoreverse] UIView.animate(withDuration: 0.5, delay: 0.3, options:...