How to make “shaking” animation

Question

In my xcode project I have an UIImage. I want to make it shaking (animation) from left to right a little bit. I wrote this code, however, its not working.

-(void         


        

Answer 1

Here's the code I use for that effect.

 -(void)shakeView {

        CABasicAnimation *shake = [CABasicAnimation animationWithKeyPath:@"position"];
        [shake setDuration:0.1];
        [shake setRepeatCount:2];
        [shake setAutoreverses:YES];
        [shake setFromValue:[NSValue valueWithCGPoint:
                                 CGPointMake(lockImage.center.x - 5,lockImage.center.y)]];
        [shake setToValue:[NSValue valueWithCGPoint:
                               CGPointMake(lockImage.center.x + 5, lockImage.center.y)]];
        [lockImage.layer addAnimation:shake forKey:@"position"];
    }

As Jere mentioned. Make sure to include the import:

#import 

You can also add it as a category on UIView.