CABasicAnimation not changing its position property after animation completes

There are a few different ways to solve this. My favorite is to set the object at the end of the animation, and use fromValue instead of toValue to create the animation. You can also set both fromValue and toValue to create this effect. ie

CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
animation.duration = 1.0;
animation.fromValue = [NSValue valueWithCGPoint:startPoint];
animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];

viewToAnimate.center = endPoint;
[viewToAnimate.layer addAnimation:animation forKey:@"slide"];

The other way to do this is to set yourself as the delegate and implement:

-(void)animationDidStop:(id)sender finished:(BOOL)finished {
     viewToAnimate.center = endPoint;
}

You need to set the final position. If you only use the animation fromValue and toValue it will snap back to the original starting point. The animation uses a copy of the view/layer as it "plays" and then the animation will show the original view/layer when it finishes.

If you don't explicitly set it, it will appear to snap back, even though the view/layer never really moved.

startPoint and endPoint are CGPoints and myView is the UIView that is being animated.

    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
    animation.duration = .3;
    animation.fromValue = [NSValue valueWithCGPoint:startPoint];
    animation.toValue = [NSValue valueWithCGPoint:endPoint];
    animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];
    [myView.layer addAnimation:animation forKey:@"position"];   
    myView.layer.position = endPoint;   // Must set end position, otherwise it jumps back

To set the object at the end of the animation just write the code like this

#import <QuartzCore/QuartzCore.h>

CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
animation.duration = 1.0;
animation.fromValue = [NSValue valueWithCGPoint:startPoint];
animation.timingFunction = [CAMediaTimingFunction functionWithName:easing];
animation.fillMode = kCAFillModeForwards;  // This line will stop the animation at the end position of animation
animation.autoreverses = NO;

viewToAnimate.center = endPoint;
[viewToAnimate.layer addAnimation:animation forKey:@"slide"];