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不间断旋转的动画

发表于: 2015-07-19   作者:pangyulei   来源:转载   浏览:
摘要: CABasicAnimation* rotationAnimation; rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"]; rotationAnimation.toValue = [NSNumber numberWithFloat: M
CABasicAnimation* rotationAnimation;
    rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
    rotationAnimation.toValue = [NSNumber numberWithFloat: M_PI * 2.0 /* full rotation*/ * rotations * duration ];
    rotationAnimation.duration = duration;
    rotationAnimation.cumulative = YES; /*可以不写这句*/
    rotationAnimation.repeatCount = repeat;

    [view.layer addAnimation:rotationAnimation forKey:@"rotationAnimation"];


我的实际代码
let rotation = CABasicAnimation(keyPath: "transform.rotation.z")
rotation.toValue = NSNumber(float: Float(2 * M_PI))
rotation.duration = 0.2
rotation.repeatCount = Float(CGFloat.max)
cancelButton.layer.addAnimation(rotation, forKey: nil)

不间断旋转的动画

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