UIPopoverViewController PresentModalViewController 动画

Question

我正在开发 iPad 应用程序。我有一个视图控制器，我想在弹出窗口控制器中显示它。但我还想在模态视图中呈现时向弹出窗口添加自定义动画。如何在呈现和关闭模态视图时向弹出窗口添加自定义动画？

下面是我的代码：

Myviewcontroller *myViewController = [[Myviewcontroller alloc] initWithNibName:@"Myviewcontroller" bundle:nil];
UINavigationController *navController=[[UINavigationController alloc] initWithRootViewController:myViewController];
myViewController.contentSizeForViewInPopover=CGSizeMake(900, 600);
UIPopoverViewController popOVer = [[UIPopoverController alloc]
                initWithContentViewController:navController];
 [popover presentPopoverFromRect:CGRectMake(37, 90, 950, 560) inView:self.view permittedArrowDirections:0 animated:NO];

我想要添加到上面的 popoverViewController 的动画是：

CABasicAnimation* rotationAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];
rotationAnimation.toValue = [NSNumber numberWithFloat:(2 * M_PI) * 3]; // 3 is the number of 360 degree rotations

rotationAnimation.duration = 1.0f;
rotationAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];

CABasicAnimation *scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
scaleAnimation.fromValue = [NSNumber numberWithFloat:0.0];
scaleAnimation.toValue = [NSNumber numberWithFloat:1.0];
scaleAnimation.duration = 1.0f;
scaleAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseOut];

CAAnimationGroup *animationGroup = [CAAnimationGroup animation];
animationGroup.duration = 1.0f;
[animationGroup setAnimations:[NSArray arrayWithObjects:rotationAnimation, scaleAnimation, nil]];

现在我的问题是如何将此动画添加到 popOverViewController 本身。由于 Popover 没有任何视图属性，因此我无法向其添加任何动画。如果我向弹出窗口内的视图控制器添加动画，则弹出窗口将停留在其位置，并且其中的视图会进行动画处理，这看起来不太好。

Answer 1

无法完成，弹出窗口不是视图控制器。