Preserve Ripple effect over UIImageView

Question

I want to preserve Ripple effect on my UIImageView. I know we can animate image for ripple effect , but preserve. In other words I want a rippled image.

I know we can animate image using

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:25.0];
[UIView setAnimationTransition:(UIViewAnimationTransition) 110 forView:imgRipple cache:NO]; 
[UIView commitAnimations];

But it animates , doesn't keep the ripple. I think we can get rippled image if we Pause or Stop animation before it ends. Is it possible? how can we Pause or Stop UIView Animation?

If there is any alternate to this trick ,kindly mention it.

Thanks.

Answer 1

I got my solution,

used this code

CFTimeInterval pausedTime = [imgRipple.layer convertTime:CACurrentMediaTime() fromLayer:nil];
     imgRipple.layer.speed = 0.0;
     imgRipple.layer.timeOffset = pausedTime;

and it paused

Answer 2

I'm not sure if it gives you what you want, but you can stop animations using those:

#import <QuartzCore/QuartzCore.h>

[CATransaction begin];
[myView.layer removeAllAnimations];
[CATransaction commit];

You can get the current state before stopping animation using presentationLayer:

CALayer* myPreLayer = [myView.layer presentationLayer];
CATransform3D currentTransform = [myPreLayer transform];
//if you need some specific info, you can use key-value pairs
float currentAngle = [[myPreLayer valueForKeyPath:@"transform.rotation.z"] floatValue];