UIImageView 旋转

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CABasicAnimation* rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];rotationAnimation.toValue = [NSNumber numberWithFloat:(DEGREES_TO_RADIANS(360))];rotationAnimation.duration = .85;rotationAnimation.repeatCount = 999999;rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];[_mImage.layer addAnimation:rotationAnimation forKey:@"revItUpAnimation"];//[_mImage.layer removeAnimationForKey:@"revItUpAnimation"];