使用 Swift 的 UIView 动画选项

我该如何设置UIViewAnimationOptions to .Repeat in an UIView动画块：

UIView.animateWithDuration(0.2, delay:0.2 , options: UIViewAnimationOptions, animations: (() -> Void), completion: (Bool) -> Void)?)

Swift 3

和以前几乎一样：

UIView.animate(withDuration: 0.2, delay: 0.2, options: UIViewAnimationOptions.repeat, animations: {}, completion: nil)

除了你可以省略完整类型：

UIView.animate(withDuration: 0.2, delay: 0.2, options: .repeat, animations: {}, completion: nil)

你仍然可以组合选项：

UIView.animate(withDuration: 0.2, delay: 0.2, options: [.repeat, .curveEaseInOut], animations: {}, completion: nil)

Swift 2

UIView.animateWithDuration(0.2, delay: 0.2, options: UIViewAnimationOptions.Repeat, animations: {}, completion: nil)

UIView.animateWithDuration(0.2, delay: 0.2, options: .Repeat, animations: {}, completion: nil)

UIView.animateWithDuration(0.2, delay: 0.2, options: [.Repeat, .CurveEaseInOut], animations: {}, completion: nil)