使用 CAAnimation 動畫圖像

Question

是否可以使用 CAAnimation 實現圖像動畫序列？ 而且我不想使用 UIImageView ......

我需要類似於 UIImageView 的東西，我們可以在其中設置 imageView.animationImages 並調用 startAnimation... 但使用 CAAnimation

Answer 1

CAKeyframeAnimation *animationSequence = [CAKeyframeAnimation animationWithKeyPath: @"contents"];
animationSequence.calculationMode = kCAAnimationLinear;
animationSequence.autoreverses = YES;
animationSequence.duration = kDefaultAnimationDuration;
animationSequence.repeatCount = HUGE_VALF;

NSMutableArray *animationSequenceArray = [[NSMutableArray alloc] init];
for (UIImage *image in self.animationImages) 
{
    [animationSequenceArray addObject:(id)image.CGImage];
}
animationSequence.values = animationSequenceArray;
[animationSequenceArray release];
[self.layer addAnimation:animationSequence forKey:@"contents"];