核心动画：光栅没有动画

Question

我试图通过将光栅应用到CALayer来执行快速和肮脏的“模糊”。 CA文档说应该使用动画，但我没有获得任何动画。代码如下：

CABasicAnimation* blurAnimation; 
blurAnimation = [CABasicAnimation animationWithKeyPath:@"rasterize"]; 
blurAnimation.removedOnCompletion = NO; 
blurAnimation.autoreverses = YES; 
blurAnimation.duration = 3.0f; 
blurAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];  
blurAnimation.repeatCount = 20; // HUGE_VALF; 
blurAnimation.fromValue = [NSNumber numberWithFloat:0.3f]; 
blurAnimation.toValue = [NSNumber numberWithFloat:1.0f]; 
[theCheck setShouldRasterize:YES]; 

// Add animation to the layer and make it so 
[theCheck addAnimation:blurAnimation forKey:nil]; 

Answer 1

您是否尝试将“光栅化”更改为“rasterizationScale”？