IOS Need to rotate a Image and keep it there, with animation - ios

Question

im looking to Rotate a UIImageView, and i found some helpfull code
- (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: M_PI * 2.0 /* full rotation*/ * rotations * duration ];
rotationAnimation.duration = duration;
rotationAnimation.cumulative = YES;
rotationAnimation.repeatCount = repeat;
[view.layer addAnimation:rotationAnimation forKey:#"rotationAnimation"];
}
The issue is that the image flips back when the animation finishes, im looking to rotate it and keep it there. Would i need to flip the actual image or can i flip the ImageView. And how would i do that`?

Answer 1

Why not use a standard UIView animation?
If you really need the repeatCount, then I suggest you use the old style:
[UIView beginAnimations]
[UIView setAnimationRepeatCount:repeatCount];
[UIView setAnimationDuration:duration];
yourView.transform = CGAffineTransformMakeRotation(degrees * M_PI);
[UIView commitAnimations];
Otherwise, you can use the much preferred new style:
[UIView animateWithDuration:duration animations:^{
yourView.transform = CGAffineTransformMakeRotation(angle);
} completion:^(BOOL finished) {
// your completion code here
}]
If you need other options like autoreverse, allow user interaction or repeating use [UIView animateWithDuration:delay:options:animations:completion:];

Answer 2

I prefer to cover all my bases with CoreAnimation. Set the final value before the animation, set the fill mode, and set do not remove.
- (void) runSpinAnimationOnView:(UIView*)view duration:(CGFloat)duration rotations: (CGFloat)rotations repeat:(float)repeat;
{
NSString * animationKeyPath = #"transform.rotation.z";
CGFloat finalRotation = M_PI * 2.0f * rotations;
[view.layer setValue:#(finalRotation) forKey:animationKeyPath];
CABasicAnimation* rotationAnimation = [CABasicAnimation animationWithKeyPath:animationKeyPath];
rotationAnimation.fromValue = #0.0f;
rotationAnimation.toValue = #(finalRotation);
rotationAnimation.fillMode = kCAFillModeBoth;
rotationAnimation.removedOnCompletion = NO;
rotationAnimation.duration = duration;
rotationAnimation.cumulative = YES;
rotationAnimation.repeatCount = repeat;
[view.layer addAnimation:rotationAnimation forKey:#"rotationAnimation"];
}