将NSNotification.userInfo [UIKeyboardAnimationCurveUserInfoKey]转换为Enum

Question

使用NSNotification.userInfo中的NSNumber [UIKeyboardAnimationCurveUserInfoKey]

目标CI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的原始值

UIViewAnimationOptionCurveEaseInOut = 0 << 16,

UIViewAnimationOptionCurveEaseIn = 1 << 16,

UIViewAnimationOptionCurveEaseOut = 2 << 16,

UIViewAnimationOptionCurveLinear = 3 << 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

这是你需要的吗？

UIViewAnimationCurve.fromRaw(Int(hereGoesYourStuff))