spin image clockwise/anticlockwise on touch

Any idea about how to s开发者_如何学JAVApin image clockwise/anticlockwise on touch.

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#import <QuartzCore/QuartzCore.h> 

[UIView beginAnimations:@"RotationAnimation" context:nil];

CABasicAnimation *fullRotationAnimation;
fullRotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
fullRotationAnimation .fromValue = [NSNumber numberWithFloat:0];
fullRotationAnimation.toValue = [NSNumber numberWithFloat:((360*M_PI)/180)];
fullRotationAnimation.duration = 2;          // speed for the rotation. Smaller number is faster
fullRotationAnimation.repeatCount = 1e100f;  // number of times to spin. 1 = once
[myImage.layer addAnimation:fullRotationAnimation forKey:@"360"];

[UIView commitAnimations];

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You'll want to use CoreAnimation for this; basically you'll need to apply an animation to the transform property of your image view. There are plenty of samples on Apple's developer page that show variations on this.

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This may be the late answer to your question, but it will help someone..
By using the CGAffineTransformMakeRotation we can able to rotate the Image

Rotate the Image in Anti-Clockwise Direction

-(void)rotate
    {
        x++;
        CGAffineTransform transform = CGAffineTransformMakeRotation(x);
        imageView.transform = transform;
        [self performSelector:@selector(rotate) withObject:self afterDelay:0.1];

    }  

For ClockWise Direction use x--;