相关疑难解决方法(0)

出于某种原因,这对我不起作用:

let color = CABasicAnimation(keyPath: "borderColor")
color.fromValue = sender.layer.borderColor;
color.toValue = UIColor.redColor().CGColor;
color.duration = 2;
color.repeatCount = 1;
sender.layer.addAnimation(color, forKey: "color and width");

我没有得到任何动画.