Animate Rotating UIImageView

Question

I want to rotate a UIImageView by roughly 10 degrees left/right but have a smooth animation, rather than a sudden turn which I see using:

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Answer 1

i have some code rotate 360 degrees:

  - (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: rotations * 2.0 /* full rotation*/ * rotations * duration ];
    rotationAnimation.duration = duration;
    rotationAnimation.cumulative = YES;
    rotationAnimation.repeatCount = repeat;
    [view.layer addAnimation:rotationAnimation forKey:@"rotationAnimation"];
}

call it: [self runSpinAnimationOnView:imgView duration:0.1 rotations:M_PI_4 repeat:10];

And animation rotate some degrees and again:

    - (void)rotateImage:(UIImageView *)image duration:(NSTimeInterval)duration delay:(NSTimeInterval)delay
              curve:(int)curve rotations:(CGFloat)rotations
{
    [UIView animateWithDuration:duration
                          delay:delay
                        options:0
                     animations:^{
                         [UIView setAnimationCurve:curve];
                         image.transform = CGAffineTransformMakeRotation(rotations);

                     }
                     completion:^(BOOL finished){
                         [self rotateImage2:image duration:duration delay:delay curve:curve rotations:rotations];
                         ;
                     }];
    [UIView commitAnimations];

}
- (void)rotateImage2:(UIImageView *)image duration:(NSTimeInterval)duration delay:(NSTimeInterval)delay
               curve:(int)curve rotations:(CGFloat)rotations
{
    [UIView animateWithDuration:duration
                          delay:delay
                        options:0
                     animations:^{
                         [UIView setAnimationCurve:curve];
                         image.transform = CGAffineTransformMakeRotation(-rotations);
                     }
                     completion:^(BOOL finished){
                         [self rotateImage:image duration:duration delay:delay curve:curve rotations:rotations];
                         ;
                     }];
    [UIView commitAnimations];

}

If you want to rotate a uiimageview by roughly 10 degrees left/right call : [self rotateImage:imgView duration:0.7 delay:0.0 curve:UIViewAnimationCurveEaseIn rotations:(M_PI/18)]; similar, some degress