Re: Core Animation - Animation Sequence
Re: Core Animation - Animation Sequence
- Subject: Re: Core Animation - Animation Sequence
- From: Rodolfo Niborski <email@hidden>
- Date: Tue, 1 Jun 2010 00:01:32 +0200
David,
Thank you for your quick answer, I'll try this and let you know what happened.
By the way, I forgot to say that my question was on iPhone, but everything you mention seems to be available in iPhone OS 3.0.
Rodolfo Niborski
http://itunes.com/apps/yiddishforkids1-alefbeys
Le 31 mai 2010 à 23:35, David Duncan a écrit :
> On May 31, 2010, at 2:24 PM, Rodolfo Niborski wrote:
>
>> My problem is that at the end of the first animation, the "Hello" message shows up in its initial position for a fraction of a second.
>> I've tried to set the fillMode of the first animation to kCAFillModeForwards with no effect.
>
> What you want to do instead is set the transform of the layer rather than trying to modify the animation to stick around. The code would be something like this:
>
> CABasicAnimation *rotation = [CABasicAnimation animationWithKeyPath:@"transform"];
> rotation.valueFunction = [CAValueFunction functionWithName: kCAValueFunctionRotateZ];
> // setup the rest of the animation as you did previously
> layer.transform = CATransform3DMakeRotation(M_PI, 0, 0, 1);
> [layer addAnimation:rotation forKey:@"transform"];
>
> What this does is it creates a basic animation that does the rotation, and then overrides the implicit animation that is created when you assign the transform to the layer. In this example I use the CAValueFunction rather than the extended keypath as this is more efficient and much more predictable, but doing so requires 10.6.
> --
> David Duncan
> Apple DTS Animation and Printing
>
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