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- (void)rotateSpinningView
{
[UIView animateWithDuration:1.5 delay:0 options:UIViewAnimationOptionCurveLinear animations:^{
self.imageView.transform = CGAffineTransformRotate(self.imageView.transform, M_PI);
} completion:^(BOOL finished) {
[self rotateSpinningView];
}];
}
- (void) runSpinAnimationOnView:(UIView*)view duration:(CGFloat)duration rotations:(CGFloat)rotations repeat:(float)repeat;
{
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;
rotationAnimation.repeatCount = repeat;
[view.layer addAnimation:rotationAnimation forKey:@"rotationAnimation"];
}
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原文地址：http://www.cnblogs.com/Jenaral/p/5090049.html
