Question

我在自定义UIView，anim1和anim2中有两个动画。 Anim1将其委托设置为self，并且在我的类中有一个animationDidStop方法，它触发Anim2。如果我想在Anim2完成时发生其他事情，我该怎么做？我可以使用其他名称指定委托方法吗？

更新

我将两个动画声明为iVars：

CABasicAnimation *topFlip;
CABasicAnimation *bottomFlip;

我构建每个动画并将delgate设置为self eg。

- (CABasicAnimation *)bottomCharFlap: (CALayer *)charLayer
{


bottomFlip = [CABasicAnimation animationWithKeyPath:@"transform"]; 

charLayer.transform = CATransform3DMakeRotation(DegreesToRadians(0), 1, 0, 0); //set to end pos before animation

 bottomFlip.toValue      = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(DegreesToRadians(-360), 1, 0, 0)];
 bottomFlip.fromValue    = [NSValue valueWithCATransform3D:CATransform3DMakeRotation(DegreesToRadians(-270), 1, 0, 0)]; 
 bottomFlip.autoreverses = NO; 
 bottomFlip.duration     = 0.5f;
 bottomFlip.repeatCount  = 1;
 bottomFlip.timingFunction = [CAMediaTimingFunction functionWithName: kCAMediaTimingFunctionEaseOut];
 bottomFlip.delegate = self;
 bottomFlip.removedOnCompletion = FALSE;



return  bottomFlip;
}

然后我尝试在animationdidStop中找到bottomFlip：

- (void)animationDidStop:(CAAnimation *)theAnimation finished:(BOOL)flag {
if (theAnimation == bottomFlip) {
    NSLog(@"Bottom Animation is: %@", bottomFlip);
}
NSLog(@"Animation %@ stopped",theAnimation);


[bottomHalfCharLayerFront addAnimation:[self bottomCharFlap:bottomHalfCharLayerFront] forKey:@"bottomCharAnim"];
bottomHalfCharLayerFront.hidden = NO;
topHalfCharLayerFront.hidden = YES;


//insert the next one???
}

“动画已停止”已记录，但没有其他内容，即它似乎无法识别bottomFlip iVar

Answer 1

这似乎有效：

- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag {
//NSLog(@"First Animation stopped");

if (anim ==[topHalfCharLayerFront animationForKey:@"topCharAnim"]) {
    NSLog(@"Top Animation is: %@", anim);
    topHalfCharLayerFront.hidden = YES;
    [bottomHalfCharLayerFront addAnimation:[self bottomCharFlap:bottomHalfCharLayerFront] forKey:@"bottomCharAnim"];
    bottomHalfCharLayerFront.hidden = NO;
}

else if ((anim ==[bottomHalfCharLayerFront animationForKey:@"bottomCharAnim"])) {

    NSLog(@"Bottom Animation is: %@", anim);

}

Answer 2

保持对动画的引用为ivars，并将其内存地址与传递给animationDidStop的地址进行比较：

- (void)animationDidStop:(CAAnimation *)theAnimation finished:(BOOL)flag
{
  if (theAnimation == anim1)
  {
    // Spin off anim2
  }
  else
  {
    // anim2 stopped. Make something else occur
  }
}

具有链式动画的核心动画animationDidStop

2 个答案: