macos - Implicit animation of layer opacity doesn't animate on Mountain Lion

Question

I'm really confused why this code works fine on 10.6 and 10.7, but on 10.8 there is no animation and the opacity value changes immediately. Self is a NSView subclass.

[CATransaction begin];
[CATransaction setValue:[NSNumber numberWithFloat:0.5]
                 forKey:kCATransactionAnimationDuration];
self.layer.opacity = 1.0;
self.labelFilename.layer.opacity = 1.0;
self.labelDate.layer.opacity = 1.0;
[CATransaction commit];

Conversely this code fails to animate on 10.6 but works fine on 10.7 and 10.8

CABasicAnimation *theAnimation;
theAnimation = [CABasicAnimation animationWithKeyPath:@"opacity"];
theAnimation.duration = 0.5;
theAnimation.timingFunction = [CAMediaTimingFunction functionWithName: kCAMediaTimingFunctionEaseInEaseOut];
theAnimation.toValue=[NSNumber numberWithFloat:1.0];
theAnimation.removedOnCompletion = NO;
theAnimation.fillMode = kCAFillModeForwards;
[self.layer addAnimation:theAnimation forKey:@"fadeUp"];
[self.labelFilename.layer addAnimation:theAnimation forKey:@"fadeUpName"];
[self.labelDate.layer addAnimation:theAnimation forKey:@"fadeUpDate"];

Answer 1

次のように、明示的なアニメーションを追加することで、アニメーションを 10.8 で動作するように戻しました。

// added explicit animation
CABasicAnimation *animOut = [CABasicAnimation animationWithKeyPath:@"transform"];
CATransform3D transform = CATransform3DMakeRotation(pi,0,1,0);
transform = CATransform3DScale(transform, scaleFactor, scaleFactor, 1.0f);
[animOut setFromValue:[NSValue valueWithCATransform3D:CATransform3DIdentity]];
[animOut setToValue:[NSValue valueWithCATransform3D:transform]];
[animOut setDuration:0.3f];
[[goingImageView layer] addAnimation:animOut forKey:nil];

// implicit animation code that worked before 10.8
[[goingImageView layer] setTransform:transform];