将NSNotification.userInfo [UIKeyboardAnimationCurveUserInfoKey]转换为Enum

Question

使用NSNotification.userInfo中的NSNumber [UIKeyboardAnimationCurveUserInfoKey]

在Objective C中，我将执行以下操作

 [UIView animateWithDuration:1.0
                      delay:0
                    options:(curveValue.intValue << 16)

即使bitshift运算符相同，Swift也不允许我这样做。我想获得相当于枚举原始值

UIViewAnimationOptionCurveEaseInOut = 0＆lt;＆lt; 16，

UIViewAnimationOptionCurveEaseIn = 1＆lt;＆lt; 16，

UIViewAnimationOptionCurveEaseOut = 2＆lt;＆lt; 16，

UIViewAnimationOptionCurveLinear = 3＆lt;＆lt; 16，

更新

---

我不确定以下方法是否正确，似乎有效

 var animationCurve : UIViewAnimationOptions = UIViewAnimationOptions.CurveEaseOut
 info[UIKeyboardAnimationCurveUserInfoKey].getValue(&animationCurve)


 UIView.animateWithDuration(durationValue.doubleValue,
        delay: 0,
        options: animationCurve,
        animations: {self.navigationController.toolbar.frame = myRect},
        completion: nil)

Answer 1

在Beta-5中

UIViewAnimationOptions.fromRaw(
    UInt(
        ( p.userInfo[ UIKeyboardAnimationCurveUserInfoKey ] as NSNumber ).unsignedIntValue << 16
    )
)!

Answer 2

您必须使用rawValue初始化UIViewAnimationOptions，如下所示：

UIView.animateWithDuration(1.0, delay: 0, options: UIViewAnimationOptions.init(rawValue:UInt(curveValue.intValue << 16)),

Answer 3

这是你需要的吗？

UIViewAnimationCurve.fromRaw(Int(hereGoesYourStuff))

Answer 4

let animationKey = userInfo[UIKeyboardAnimationCurveUserInfoKey] as UInt
UIViewAnimationOptions(rawValue: animationKey)