ios - 隐式属性动画不适用于CAReplicatorLayer吗？

Question

示例代码是here。

用显式属性动画替换显式属性动画后，动画将被破坏。

显式动画:

-(void)animate:(id)sender {
    ...
    //Transform Animation
    animation = [CABasicAnimation animationWithKeyPath:@"transform"];
    animation.fromValue = [NSValue valueWithCATransform3D: CATransform3DIdentity];
    animation.toValue = [NSValue valueWithCATransform3D: t];
    animation.duration = 1.0;
    animation.removedOnCompletion = NO;
    animation.fillMode = kCAFillModeBoth;
    [subLayer addAnimation:animation forKey:@"transform"];

    //Opacity Animation
    animation = [CABasicAnimation animationWithKeyPath:@"opacity"];
    animation.fromValue = [NSNumber numberWithFloat:1.0];
    animation.toValue = [NSNumber numberWithFloat:0.0];
    animation.duration = 1.0;
    animation.removedOnCompletion = NO;
    animation.fillMode = kCAFillModeBoth;
    [subLayer addAnimation:animation forKey:@"opacity"];
    ...
}

-(void)reset:(id)sender {       
    ...
    //Transform Animation
    animation = [CABasicAnimation animationWithKeyPath:@"transform"];
    animation.fromValue = [NSValue valueWithCATransform3D: t];
    animation.toValue = [NSValue valueWithCATransform3D: CATransform3DIdentity];
    animation.duration = 1.0;
    animation.removedOnCompletion = NO;
    animation.fillMode = kCAFillModeBoth;
    [subLayer addAnimation:animation forKey:@"transform"];

    //Opacity Animation
    animation = [CABasicAnimation animationWithKeyPath:@"opacity"];
    animation.fromValue = [NSNumber numberWithFloat:0.0];
    animation.toValue = [NSNumber numberWithFloat:1.0];
    animation.duration = 1.0;
    animation.removedOnCompletion = NO;
    animation.fillMode = kCAFillModeBoth;
    [subLayer addAnimation:animation forKey:@"opacity"];

    ...
}

隐式动画:

-(void)animate:(id)sender {
    ...
    //Transform Animation
    [CATransaction setAnimationDuration:1];
    subLayer.transform = t;

    //Opacity Animation
    [CATransaction setAnimationDuration:1];
    subLayer.opacity = 0;
    ...
}

-(void)reset:(id)sender {       
    ...
    //Transform Animation
    [CATransaction setAnimationDuration:1];
    subLayer.transform = CATransform3DIdentity;

    //Opacity Animation
    [CATransaction setAnimationDuration:1];
    subLayer.opacity = 1;       
    ...
}

为什么？

Answer 1

您在使用隐式动画时不需要使用CATransaction。
小心uikit禁用图层的隐式动画，该图层是UIView的根层