Question

我想要旋转两张图像，我将一张图像放在另一张图片后面但是当我使用以下代码旋转它们时，背面图像将位于正面图像上方并且我分配他们的ZPOstion但他们没有变化

旋转http://i39.tinypic.com/ivv2ah.png

之前我的观点的此链接

并在旋转http://i43.tinypic.com/ic05xj.png

之后

这是怎么发生的

 [UIView animateWithDuration:0.2 animations:
     ^{
         CALayer *myLayer=self.image2.layer;
         CABasicAnimation *animation = [CABasicAnimation  animationWithKeyPath:@"transform.rotation.x"];
         animation.fromValue = [NSNumber numberWithFloat:(1 * M_PI/Down)]; 
         animation.toValue = [NSNumber numberWithFloat:(1 * M_PI/UP)]; 
         animation.repeatCount =0; 
         animation.duration=0.2;
         [animation setRemovedOnCompletion:NO];
         animation.timingFunction = [CAMediaTimingFunction
                                     functionWithName:kCAMediaTimingFunctionLinear]; 
         [self.image2.layer addAnimation:animation forKey:@"transform.rotation.x"];
         CATransform3D transform = CATransform3DIdentity;
         transform.m34 = (1/500.0f);
         transform = CATransform3DRotate(transform, (1 * M_PI/UP), 1, 0,0);
         myLayer.transform=transform;
     }
   completion:^(BOOL finished) 
     {
         self.image2.postion=@"UP";
     }];


    [UIView animateWithDuration:0.2 animations:
     ^{
         CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.x"];
         animation.fromValue = [NSNumber numberWithFloat:(1 * M_PI/Down)]; 
         animation.toValue = [NSNumber numberWithFloat:(1 * M_PI/UP)]; 
         animation.repeatCount =0;
         animation.duration=0.2;
         [animation setRemovedOnCompletion:NO];
         animation.timingFunction = [CAMediaTimingFunction
                                     functionWithName:kCAMediaTimingFunctionLinear]; 
         [card.layer addAnimation:animation forKey:@"transform.rotation.x"];
         CATransform3D transform = CATransform3DIdentity;
         transform.m34 = (1/500.0f);
         transform = CATransform3DRotate(transform, (1 * M_PI/UP), 1, 0,0);
         card.layer.transform=transform;
     }
    completion:^(BOOL finished) 
     {
         card.postion=@"UP";
     }];

CArdImage是Custom UIImageView，这就是我改变的内容

- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) 
{
    self.layer.anchorPoint=CGPointMake(0.5, 1.0);
    CATransform3D transform = CATransform3DIdentity;
    transform.m34 = (1/500.0f);
    transform = CATransform3DRotate(transform, (1 * M_PI/2.5), 0.5, 0,0);
    self.layer.transform=transform;
    self.postion=@"UP";
  }
  return self;
 }

Answer 1

可能的原因是动画彼此不同步。尝试将两个动画块放在一起：

[UIView animateWithDuration:0.2 animations:
 ^{
     CALayer *myLayer=self.image2.layer;
     CABasicAnimation *animation = [CABasicAnimation  animationWithKeyPath:@"transform.rotation.x"];
     animation.fromValue = [NSNumber numberWithFloat:(1 * M_PI/Down)]; 
     animation.toValue = [NSNumber numberWithFloat:(1 * M_PI/UP)]; 
     animation.repeatCount =0; 
     animation.duration=0.2;
     [animation setRemovedOnCompletion:NO];
     animation.timingFunction = [CAMediaTimingFunction
                                 functionWithName:kCAMediaTimingFunctionLinear]; 
     [self.image2.layer addAnimation:animation forKey:@"transform.rotation.x"];
     CATransform3D transform = CATransform3DIdentity;
     transform.m34 = (1/500.0f);
     transform = CATransform3DRotate(transform, (1 * M_PI/UP), 1, 0,0);
     myLayer.transform=transform;

     // second animation code
     CABasicAnimation *animation2 = [CABasicAnimation animationWithKeyPath:@"transform.rotation.x"];
     animation2.fromValue = [NSNumber numberWithFloat:(1 * M_PI/Down)]; 
     animation2.toValue = [NSNumber numberWithFloat:(1 * M_PI/UP)]; 
     animation2.repeatCount =0;
     animation2.duration=0.2;
     [animation2 setRemovedOnCompletion:NO];
     animation2.timingFunction = [CAMediaTimingFunction
                                 functionWithName:kCAMediaTimingFunctionLinear]; 
     [card.layer addAnimation:animation2 forKey:@"transform.rotation.x"];
     CATransform3D transform = CATransform3DIdentity;
     transform.m34 = (1/500.0f);
     transform = CATransform3DRotate(transform, (1 * M_PI/UP), 1, 0,0);
     card.layer.transform=transform;
 }
completion:^(BOOL finished)
 {
     self.image2.postion=@"UP";
     card.postion=@"UP";
 }];

在X方向旋转两个UIImageView

1 个答案: