ios - 无法快速停止 UIView 动画

Question

这是我的动画代码:

UIView.animate(withDuration: 1, delay: 1, options: [.repeat], animations: {
        self.micButtonOuterRing?.frame = CGRect(x: (self.originalOuterRingFrame?.origin.x)! - 30, y: (self.originalOuterRingFrame?.origin.y)! - 30, width: (self.originalOuterRingFrame?.width)! + 60, height: (self.originalOuterRingFrame?.height)! + 60)
        self.micButtonOuterRing?.alpha = 0
        self.micButtonOuterRing?.layer.cornerRadius = (self.micButtonOuterRing?.frame.width)! / 2
    }, completion: { _ in
        self.micButtonOuterRing?.frame = self.originalOuterRingFrame!
        self.micButtonOuterRing?.alpha = 1
    })

我试图在按下按钮时停止它，所以我运行以下命令:

@IBAction func micButtonPressed(_ sender: Any) {

    micButtonOuterRing?.layer.removeAllAnimations()

}

但是动画还在继续。我知道 micButtonPressed 函数有效，因为我添加了打印语句并且它有效。有人可以帮忙吗？

Answer 1

使用UIPropertyAnimator反而;它旨在让您暂停，stop , reverse 等，语法几乎与旧的 UIViewAnimation 方法完全相同。