[转载]CABasicAnimation animationWithKeyPath 一些规定的值

原文地址：CABasicAnimation animationWithKeyPath 一些规定的值作者：cg516

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"];