How do you make images wobble like on the iPhone home screen?

If you want to make your views, images, etc. wobble, like the home screen, you could do something like this:

    CGAffineTransform leftWobble = CGAffineTransformRotate(CGAffineTransformIdentity, RADIANS(-15.0));
    CGAffineTransform rightWobble = CGAffineTransformRotate(CGAffineTransformIdentity, RADIANS(15.0));

    view.transform = leftWobble;  // starting point

    [UIView beginAnimations:@"wobble" context:view];
    [UIView setAnimationRepeatAutoreverses:YES];
    [UIView setAnimationRepeatCount:5]; // adjustable
    [UIView setAnimationDuration:0.125];
    [UIView setAnimationDelegate:self];
    view.transform = rightWobble; // end here & auto-reverse
    [UIView commitAnimations];

You would also need to add this define:

#define RADIANS(degrees) ((degrees * M_PI) / 180.0)