UIView animation 不工作 - Xcode (Swift)

Question

Example: I don't see any animation. Why?

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
})

Answer 1

Your code works fine. I removed the completion as it is not needed, but apart from that, this was done with exactly the code you've shown.