CAAnimation 没有为我的图像序列设置动画

Question

我在使用 CAAnimation 制作动画时遇到问题，它似乎没有给我任何错误，但它没有动画。我很困惑

NSMutableArray *animationImages = [NSMutableArray array];
//Adding images into array
for (int i=0;i<=5;i++){
    UIImage *imgfile = [NSString stringWithFormat:@"%@/ConusOverlay/%d_ConusOverlay.gif",documentsPath,i];
    [animationImages addObject: imgfile];
}

CAKeyframeAnimation *animationSequence = [CAKeyframeAnimation animationWithKeyPath: @"contents"];
animationSequence.calculationMode = kCAAnimationLinear;
animationSequence.autoreverses = NO;
animationSequence.duration = 1;
animationSequence.repeatCount = HUGE_VALF;

NSMutableArray *animationSequenceArray = [NSMutableArray array];
for (UIImage *image in animationImages) {
    [animationSequenceArray addObject:image]; //<--Does this have to be (id)image.CGImage ?, if I am correct you are unable to add CGImage to an array
}
animationSequence.values = animationSequenceArray;
[mlLayer.contents addAnimation:animationSequence forKey:@"contents"];

Answer 1

CoreAnimation 通常采用 CGImageRef，而不是 UIImages。尝试按照您的建议将 image 替换为 (id)image.CGImage 。数组可以存储 CGImageRef！