How do I animate UIImageView along a path?
Does anyone know of any tutorials that walk through this?
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1Have you tried looking online? Please show some research effort. – Blue Ice Feb 27 '14 at 01:50
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Welcome to StackOverflow! The best questions here are about code, what you have tried and what effort you have made. Do some research and then ask a specific question. – Steve H. Feb 27 '14 at 01:54
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I was how you would use key frame animation to do this – user3349248 Feb 27 '14 at 01:56
1 Answers
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CAKayframeAnimation can do so.
CGMutablePathRef path = CGPathCreateMutable();
//your code to configure the path
//configure the animation
CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
[animation setPath:path];
[animation setDuration:3.0];
CGPathRelease(path);
[self.yourImageView.layer addAnimation:animation forKey:NULL];
Jing
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nothing about the animation, but you can add your imageView as a property to the viewController – Jing Feb 27 '14 at 02:03
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is quartz core animation needed? And just to be sure this does not need to be in a UIView subclass. – user3349248 Feb 27 '14 at 02:11
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import
, this code does not need to be in a UIView (actually it's often in a viewController class) – Jing Feb 27 '14 at 02:25 -
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where you put your code in ? you'd better read some introduction of objc and iOS development – Jing Feb 27 '14 at 03:10
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I put the code in where it said to configure your path and once I put that code in is when i got all of the error messages. – user3349248 Feb 27 '14 at 03:17
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the path in my answer is a local variable. it initializes when the method begins and release before the method ends. So it does not need a self before the path. (when we use self.xxx, the xxx is the instance variable, so use self.xxx to refer to it) – Jing Feb 27 '14 at 03:26