ios - How do you create a wiggle animation similar to iphone deletion animation

Question

We are currently developing an application that contains a series of icons. We want the icons to wiggle like the app deletion animations when pressed. What would be the best way to code this animation sequence?

question from:https://stackoverflow.com/questions/3703922/how-do-you-create-a-wiggle-animation-similar-to-iphone-deletion-animation

Answer 1

The answer by Vinzius is very cool. However the wobble only rotates from 0 Radians to 0.08. Thus the wobble can look a little unbalanced. If you get this same issue then you may want to add both a negative and a positive rotation by using a CAKeyframeAnimation rather than a CABasicRotation:

- (CAAnimation*)getShakeAnimation 
{
    CAKeyframeAnimation* animation = [CAKeyframeAnimation animationWithKeyPath:@"transform"];

    CGFloat wobbleAngle = 0.06f;

    NSValue* valLeft = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(wobbleAngle, 0.0f, 0.0f, 1.0f)];
    NSValue* valRight = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(-wobbleAngle, 0.0f, 0.0f, 1.0f)];
    animation.values = [NSArray arrayWithObjects:valLeft, valRight, nil];

    animation.autoreverses = YES;  
    animation.duration = 0.125;
    animation.repeatCount = HUGE_VALF;  

    return animation;    
}

You can use this animation method for your view or button like this.

[self.yourbutton.layer addAnimation:[self getShakeAnimation] forKey:@""];