Re: Is kCAOnOrderOut too good to be true?
Re: Is kCAOnOrderOut too good to be true?
- Subject: Re: Is kCAOnOrderOut too good to be true?
- From: Matt Neuburg <email@hidden>
- Date: Mon, 13 Sep 2010 12:32:28 -0700
- Thread-topic: Is kCAOnOrderOut too good to be true?
David Duncan said on Mar 09 2010 at 21:13:
> Unfortunately the answer is that this is a bug without a clear solution (in
> the removal case). Your best bet is to hide the layer, then remove it after
> the animation has completed rather than to remove it directly.
Unfortunately this seems not to work either: an animation returned as an
action by e.g. actionForLayer:forKey: when hiding a layer (key @"hidden") is
never performed. So the workaround would presumably involve setting the
layer's opacity to 0.
What I would do, then, is something like this:
[CATransaction setCompletionBlock: ^{
[layer removeFromSuperlayer];
}];
[CATransaction setValue:@"" forKey:@"byebye"];
layer.opacity = 0;
Now in the delegate's actionForLayer:forKey: you test for the incoming
@"opacity" key and the CATransaction @"byebye" key, and if both conditions
are met, return the desired animation.
m.
>
> On Mar 9, 2010, at 11:52 AM, Steven Degutis wrote:
>
>> Not yet; still asking everyone I know and hoping a Core Animation wizard
>> comes across this thread.
>>
>> On Tue, Mar 9, 2010 at 2:49 PM, Jon Buffington wrote:
>>
>>> Steven,
>>>
>>> Did you ever find a solution to the kCAOnOrderOut animation problem? I was
>>> frustrated by this problem in the past but gave up as the animation was
>>> optional.
--
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