objective-c - 如何在CAKeyframeAnimation中使用过渡

Question

我想使用CAKeyframeAnimation显示一些图像，如何在图像之间执行转换？或者如何将 CATransition 添加到 animation 中？如:image1淡出然后image2淡入，image2淡出然后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"];
}