例如: 我没有看到任何动画。为什么?
UIView.animate(withDuration: 1, delay: 0, options: [.repeat, .autoreverse], animations: {
self.buttonTrial.transform = CGAffineTransform(scaleX: 1.2, y: 1.2)
}, completion: { completion in
self.buttonTrial.transform = .identity
})