iphone - 使用 CAAnimation 制作图像动画

Question

是否可以使用 CAAnimation 实现图像的动画序列？而且我不想使用 UIImageView...

我需要类似于 UIImageView 的东西，我们可以在其中设置 imageView.animationImages 并调用 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"];