Rotate the UIView clockwise. Rotate or swing UIView in circular manner.

+(void)rotateViewLikeCircle:(UIView*)view rotation:(int)numberOfRotation 

{

    CABasicAnimation *rotationAnimation;

    rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];

    rotationAnimation.toValue = [NSNumber numberWithFloat:DEGREES_TO_RADIANS(180)];

    rotationAnimation.duration = 0.75;

    rotationAnimation.repeatCount = numberOfRotation;

    rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];

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

}

Also don't forget to add the macros for converting degree to radian and visa-versa.

#define DEGREES_TO_RADIANS(degree) (M_PI * degree / 180.0)

#define RADIANS_TO_DEGREES(radians) ((radians) * (180.0 / M_PI))