Rotate UIView or UIImageView with this bellow code.

 For use this code import QuartzCore framework like bellow

#import <QuartzCore/QuartzCore.h>   

and then use bellow code

   CABasicAnimation *theAnimation;

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

    theAnimation.duration=1.0; // Animation duration

    theAnimation.repeatCount=1; // no of times you want to do animation

    theAnimation.autoreverses=YES; // reverses the animation

    theAnimation.fromValue=[NSNumber numberWithFloat:0.0]; // initial stage of animation

    theAnimation.toValue=[NSNumber numberWithFloat:3.0]; // rotation angle

    [yourImageView.layer addAnimation:theAnimation forKey:@"animateRotation"]; // add animation to thelayer of a view for which you want animation.