隐式属性动画不适用于CAReplicatorLayer吗？

问题描述

示例代码位于。 / p>

用隐式属性动画替换显式属性动画后，该动画将被破坏。

显式动画：

 -（void）animate：（id）sender {
 ... 
 //变换动画
动画= [CABasicAnimation animationWithKeyPath：@ transform]; 
 animation.fromValue = [NSValue valueWithCATransform3D：CATransform3DIdentity]; 
 animation.toValue = [NSValue valueWithCATransform3D：t]; 
 animation.duration = 1.0; 
 animation.removedOnCompletion =否； 
 animation.fillMode = kCAFillModeBoth; 
 [subLayer addAnimation：animation forKey：@ transform]; 
 
 //不透明度动画
 animation = [CABasicAnimation animationWithKeyPath：@ opacity]; 
 animation.fromValue = [NSNumber numberWithFloat：1.0]; 
 animation.toValue = [NSNumber numberWithFloat：0.0]; 
 animation.duration = 1.0; 
 animation.removedOnCompletion =否； 
 animation.fillMode = kCAFillModeBoth; 
 [subLayer addAnimation：animation forKey：@ opacity]; 
 ... 
} 
 
-（void）reset：（id）sender {
 ... 
 //变换动画
 animation = [CABasicAnimation animationWithKeyPath：@ transform]; 
 animation.fromValue = [NSValue valueWithCATransform3D：t]; 
 animation.toValue = [NSValue valueWithCATransform3D：CATransform3DIdentity]; 
 animation.duration = 1.0; 
 animation.removedOnCompletion =否； 
 animation.fillMode = kCAFillModeBoth; 
 [subLayer addAnimation：animation forKey：@ transform]; 
 
 //不透明度动画
 animation = [CABasicAnimation animationWithKeyPath：@ opacity]; 
 animation.fromValue = [NSNumber numberWithFloat：0.0]; 
 animation.toValue = [NSNumber numberWithFloat：1.0]; 
 animation.duration = 1.0; 
 animation.removedOnCompletion =否； 
 animation.fillMode = kCAFillModeBoth; 
 [subLayer addAnimation：animation forKey：@ opacity]; 
 
 ... 
} 
  

模仿动画：

 -（void）animate：（id）sender {
 ... 
 //变换动画
 [CATransaction setAnimationDuration：1]; 
 subLayer.transform = t; 
 
 //不透明度动画
 [CATransaction setAnimationDuration：1]; 
 subLayer.opacity = 0; 
 ... 
} 
 
-（void）reset：（id）sender {
 ... 
 //变换动画
 [CATransaction setAnimationDuration：1]; 
 subLayer.transform = CATransform3DIdentity; 
 
 //不透明度动画
 [CATransaction setAnimationDuration：1]; 
 subLayer.opacity = 1; 
 ... 
} 
  

为什么？

解决方案

u使用隐式动画时不需要使用CATrasaction。
注意uikit禁用层的隐式动画，该层是UIView的根层

The sample code is here.

After replacing explicit property animations with implicit property animations, the animation is broken.

Explicit animation:

-(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"];

    ...
}

Implicit animation:

-(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;
    ...
}

Why?

解决方案

u don't need to use CATrasaction when you use implicit animation.be carefull that uikit disables the implicit animation of layer which is a root layer of UIView

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