CABasicAnimation animationWithKeyPath 一些规定的值

CABasicAnimation animationWithKeyPath Types

When using the ‘CABasicAnimation’ from the QuartzCore Framework in Objective-C, you have to specify an animationWithKeyPath. This is a long string and is not easily listed in the CABasicAnimation, CAPropertyAnimation, or the CAAnimation class. I ended up finding a handy chart within the Core Animation Programming guide in Apple’s iPhone OS Reference Library. Hope this helps save someone time, at least it will for me.

 

01. //The following code moves a view up 60 pixels and stops.

02.  

03. CABasicAnimation *theAnimation;

04. theAnimation=[CABasicAnimation animationWithKeyPath:@"transform.translation.y"];

05. theAnimation.delegate = self;

06. theAnimation.duration = 1;

07. theAnimation.repeatCount = 0;

08. theAnimation.removedOnCompletion = FALSE;

09. theAnimation.fillMode = kCAFillModeForwards;

10. theAnimation.autoreverses = NO;

11. theAnimation.fromValue = [NSNumber numberWithFloat:0];

12. theAnimation.toValue = [NSNumber numberWithFloat:-60];

13.  

14. [self.view.layer addAnimation:theAnimation forKey:@"animateLayer"];

 

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