iOS UIButton点击放大缩小效果动画

+ (void)buttonAnimationClick:(UIButton*)button{
    button.transform = CGAffineTransformIdentity;
    [UIView animateKeyframesWithDuration:0.5 delay:0 options:0 animations: ^{
        [UIView addKeyframeWithRelativeStartTime:0 relativeDuration:1 / 3.0 animations: ^{
            
            button.transform = CGAffineTransformMakeScale(1.1, 1.1);
        }];
        [UIView addKeyframeWithRelativeStartTime:1/3.0 relativeDuration:1/3.0 animations: ^{
            
            button.transform = CGAffineTransformMakeScale(0.8, 0.8);
        }];
        [UIView addKeyframeWithRelativeStartTime:2/3.0 relativeDuration:1/3.0 animations: ^{
            
            button.transform = CGAffineTransformMakeScale(1.0, 1.0);
        }];
    } completion:nil];
}