Convert NSNotification.userInfo[UIKeyboardAnimationCurveUserInfoKey] to Enum

Question

Using NSNumber from NSNotification.userInfo[UIKeyboardAnimationCurveUserInfoKey]

In Objective C I would do the following

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

Swift will not allow me to do the same even though the bitshift operator is the same. I would like to get the enum raw value which is equivalent

UIViewAnimationOptionCurveEaseInOut = 0 << 16,

UIViewAnimationOptionCurveEaseIn = 1 << 16,

UIViewAnimationOptionCurveEaseOut = 2 << 16,

UIViewAnimationOptionCurveLinear = 3 << 16,

update

I am not sure if the below approach is correct , it seems to work

 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)

Thanks, your update version works. – ZYiOS Jul 30 '14 at 08:36 — ZYiOS, Jul 30 '14 at 08:36

score 3 · Answer 1 · answered Aug 12 '14 at 09:35

3

In Beta-5

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

answered Aug 12 '14 at 09:35

Satachito

5,838
36
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2

Is the need to shift by 16 bits documented anywhere? – Kristopher Johnson Sep 12 '14 at 15:21
Works in Xcode 6.0 final release as well. The shift is defined in the Objective C code. – Daniel T. Oct 11 '14 at 13:29
Has this been updated since Xcode 6 and Swift came out of beta? It seems overly-complicated. – Gazzini Oct 29 '14 at 06:37
@KristopherJohnson https://developer.apple.com/documentation/uikit/uiviewanimationoptions/uiviewanimationoptioncurveeasein?language=swift – cnotethegr8 Feb 21 '19 at 07:39

score 1 · Answer 2 · answered Mar 31 '16 at 00:59

1

You have to init a UIViewAnimationOptions with the rawValue like this:

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

answered Mar 31 '16 at 00:59

n6xej

461
5
15

score -1 · Answer 3 · answered Jun 04 '14 at 17:46

-1

Is this what you need?

UIViewAnimationCurve.fromRaw(Int(hereGoesYourStuff))

answered Jun 04 '14 at 17:46

Fernando Mazzon

3,562
1
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Thanks for your answer, it may we be a solution but it is not quite complete. I think I may have resolved this – Ryan Heitner Jun 05 '14 at 09:00
8

Since the value of UIKeyboardAnimationCurveUserInfoKey is 7 which is not documented in the sdk, UIViewAnimationCurve.fromRaw(7) will return nil – ZYiOS Jul 30 '14 at 07:59

score -1 · Answer 4 · answered Dec 26 '14 at 08:36

-1

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

answered Dec 26 '14 at 08:36

ChikabuZ

10,031
5
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86

1

if animationKey is not 0-3, the init method returns nil which is incorrect since animationKey is 7 on ios 7+ – Kevlar Jan 03 '15 at 18:31

Convert NSNotification.userInfo[UIKeyboardAnimationCurveUserInfoKey] to Enum

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