將NSNotification.userInfo [UIKeyboardAnimationCurveUserInfoKey]轉換為Enum

Question

使用NSNotification.userInfo中的NSNumber [UIKeyboardAnimationCurveUserInfoKey]

目標CI將執行以下操作

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

即使bitshift運算符相同，Swift也不允許我這樣做。 我想獲得相當於枚舉的原始值

UIViewAnimationOptionCurveEaseInOut = 0 << 16，

UIViewAnimationOptionCurveEaseIn = 1 << 16，

UIViewAnimationOptionCurveEaseOut = 2 << 16，

UIViewAnimationOptionCurveLinear = 3 << 16，

更新

---

我不確定以下方法是否正確，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

你必須使用rawValue初始化一個UIViewAnimationOptions，如下所示：

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

Answer 3

這是你需要的嗎？

UIViewAnimationCurve.fromRaw(Int(hereGoesYourStuff))

Answer 4

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