将NSNotification.userInfo [UIKeyboardAnimationCurveUserInfoKey]转换为Enum
从NSNotification.userInfo使用NSNumber [UIKeyboardAnimationCurveUserInfoKey]
在Objective Objective中，将执行以下操作
[UIView animateWithDuration:1.0
delay:0
options:(curveValue.intValue << 16)
即使移位运算符相同，Swift也不会允许我这样做。 我想获得相同的枚举原始值
UIViewAnimationOptionCurveEaseInOut = 0 << 16，
UIViewAnimationOptionCurveEaseIn = 1 << 16，
UIViewAnimationOptionCurveEaseOut = 2 << 16，
UIViewAnimationOptionCurveLinear = 3 << 16，
更新
我不确定下面的方法是否正确，它似乎工作
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)
在Beta-5中
UIViewAnimationOptions.fromRaw(
UInt(
( p.userInfo[ UIKeyboardAnimationCurveUserInfoKey ] as NSNumber ).unsignedIntValue << 16
)
)!
您必须像这样使用rawValue初始化UIViewAnimationOptions：
UIView.animateWithDuration(1.0, delay: 0, options: UIViewAnimationOptions.init(rawValue:UInt(curveValue.intValue << 16)),
这是你需要的吗？
UIViewAnimationCurve.fromRaw(Int(hereGoesYourStuff))
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