ios 核心动画-------跳动效果的实现,旋转效果的实现

1.跳动效果的实现

+ (void)popJumpAnimationView:(UIView *)sender

{

    CGFloat duration = 1.f;

    CGFloat height = 7.f;

    

    CAKeyframeAnimation * animation = [CAKeyframeAnimation animationWithKeyPath:@"transform.translation.y"];

    CGFloat currentTy = sender.transform.ty;

    animation.duration = duration;

    animation.values = @[@(currentTy), @(currentTy - height/4), @(currentTy-height/4*2), @(currentTy-height/4*3), @(currentTy - height), @(currentTy-height/4*3), @(currentTy -height/4*2), @(currentTy - height/4), @(currentTy)];

    animation.keyTimes = @[ @(0), @(0.025), @(0.085), @(0.2), @(0.5), @(0.8), @(0.915), @(0.975), @(1) ];

    animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

    animation.repeatCount = HUGE_VALF;

    [sender.layer addAnimation:animation forKey:@"kViewShakerAnimationKey"];

}

+ (void)popRotationAnimation:(UIView *)sender

{   

    CABasicAnimation *animation =  [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];

    //默认是顺时针效果，若将fromValue和toValue的值互换，则为逆时针效果

    animation.fromValue = [NSNumber numberWithFloat:0.f];

    animation.toValue = [NSNumber numberWithFloat:M_PI *2];

    animation.duration = 1.5f;

    animation.autoreverses = NO;

    animation.fillMode = kCAFillModeForwards;

    animation.repeatCount = 500;

    [sender.layer addAnimation:animation forKey:nil];

    

}