如何在 CAKeyframeAnimation 中使用过渡

Question

我想使用CAKeyframeAnimation 显示几张图片，如何在图片之间执行transitions？或者如何将CATransition 添加到animation？如：image1缓出后image2缓入，image2淡出后image3淡入等

Answer 1

CAKeyframeAnimation：

- (void)animateImages
{
    CAKeyframeAnimation *keyframeAnimation = [CAKeyframeAnimation animationWithKeyPath:@"contents"];
    keyframeAnimation.values = self.imagesArray;

    keyframeAnimation.repeatCount = 1.0f;
    keyframeAnimation.duration = kAnimationDuration; // static const with your value

    keyframeAnimation.delegate = self;

    keyframeAnimation.removedOnCompletion = NO;
    keyframeAnimation.fillMode = kCAFillModeForwards;

    CALayer *layer = self.animationImageView.layer;

    [layer addAnimation:keyframeAnimation
                 forKey:@"girlAnimation"];
}

Answer 2

一张图片的一层效果很好。我可以在每一层的开始/结束添加动画以显示进/出过渡。