Question

我试图在界面构建器中设置UIImage的动画，这是UIView的子视图。我的问题是，这个动画是＆＃34;通过＆＃34;另一种观点是表格视图，然后它简单地落后于＃34;它并没有显示出来。我的视图层次结构如下：

View
   View
      SubviewToAnimate
   TableView

我试过[self.view bringViewToFront:SubviewToAnimate] 在视图本身和动画中。

动画代码：

-(void)startAnimationWithImageView:(UIImageView*)imageView{

    imageViewToMove = imageView;
    imageViewFirstAlpha = imageViewToMove.alpha;

    firstCenterOfView = imageViewToMove.center;

    double firstX =self.parabelWidth*self.startValue;
    double firstY = self.parabelHeight*pow(self.startValue, 2);
    firstPointOfParabel = CGPointMake(firstX, firstY);

    if (points) {
        points = nil;
    }
    points =[[NSMutableArray alloc]init];

    for (int counter = self.startValue; counter < self.stopValue; counter++) {

        double y = self.parabelHeight*pow(counter, 2);
        double x = self.parabelWidth*counter;

        CGPoint point = CGPointMake(x, y);
        [points addObject:[NSValue valueWithCGPoint:point]];
        //DLog(@"point: %@", NSStringFromCGPoint(point));

    }

    animationCounter = 0;
    [self moveView];


}

-(void)moveView{

    if (animationCounter < points.count) {
        [UIView animateWithDuration:self.duration
                              delay:0
                            options:UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationCurveLinear
                         animations:^{

                             NSValue *val = [points objectAtIndex:animationCounter];
                             CGPoint point = [val CGPointValue];

                             double delta = 1.0/points.count;
                             imageViewToMove.center = CGPointMake(firstCenterOfView.x-firstPointOfParabel.x+point.x, firstCenterOfView.y-firstPointOfParabel.y+point.y);
                             imageViewToMove.alpha = sqrt(imageViewToMove.alpha-delta);

                             double scale = animationCounter*delta;
                             imageViewToMove.transform = CGAffineTransformMakeScale(sqrt(1-scale), sqrt(1-scale));

                             animationCounter++;

                         }
                         completion:^(BOOL finished){

                             [self moveView];

                         }];
    }else if (animationCounter == points.count) {
        imageViewToMove.center = firstCenterOfView;
        imageViewToMove.transform = CGAffineTransformMakeScale(1.0, 1.0);

        [UIView animateWithDuration:0.3
                              delay:0
                            options:UIViewAnimationOptionBeginFromCurrentState | UIViewAnimationCurveEaseIn
                         animations:^{

                             imageViewToMove.alpha = imageViewFirstAlpha;

                         }
                         completion:NULL];
    }else
        return;


}

Answer 1

您无法使用[self.view bringViewToFront:SubviewToAnimate]将图片视图放在表格视图的顶部，因为它不是表格视图的兄弟。

如果你有......

View
    SubView
    ImageView (animated view)
    TableView

然后该代码将起作用。

或者，在您当前的层次结构中，您可以将SubView带到前面，这将带来图像视图。

隐藏在另一个视图后面的视图的子视图的动画

1 个答案: