问题描述
限时送ChatGPT账号..我尝试在弹出框控制器的视图中显示不同视图控制器的视图.我现在尝试了三个小时,但没有成功.基本上这就是我所做的:
I try to show views of different view controllers within a popover controller's view. I tried for three hours now but without success. Basically this is what I've done:
- (IBAction)buttonTapped:(id)sender {
NSDictionary *options = [NSDictionary dictionaryWithObject: [NSNumber numberWithInteger:UIPageViewControllerSpineLocationMin] forKey:UIPageViewControllerOptionSpineLocationKey];
UIPageViewController *pageVC = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:options];
UIStoryboard *sb = [UIStoryboard storyboardWithName:@"MainStoryboard_iPad"
bundle:[NSBundle mainBundle]];
UIViewController *firstVC = [sb instantiateViewControllerWithIdentifier:@"FirstTableViewController"];
UIViewController *secondVC = [sb instantiateViewControllerWithIdentifier:@"SecondViewController"];
NSArray *viewControllers = [[NSArray alloc] initWithObjects:firstVC, secondVC, nil];
[pageVC setViewControllers:viewControllers direction:UIPageViewControllerTransitionStylePageCurl animated:NO completion:nil];
UIButton *button = sender;
UIPopoverController *popover = [[UIPopoverController alloc] initWithContentViewController:pvc];
[popover presentPopoverFromRect:button.frame inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
}
这就是我看到的:
我在这里遗漏了什么?
推荐答案
好吧,如果有人遇到类似的问题,我解决了:
Ok, if someone encounters a similar problem, I solved it:
似乎在初始化之后,您必须准确设置一次所需的视图控制器的数量.
It seems that right after initialization you have to set exactly the number of view controllers that are needed at a time.
因此,如果您创建一个 UIPageViewController
,一次显示一个页面,请在 setViewControllers:direction:animated:completion:
setViewControllers:direction:animated:completion:代码>.不止一个导致我的控制器不显示任何内容.稍后可以通过实现 UIPageViewControllerDelegate
和 UIPageViewControllerDataSource
协议来延迟添加其他视图控制器.
So, if you create a UIPageViewController
with one page displayed at a time, put an array containing exactly(!) one view controller in setViewControllers:direction:animated:completion:
. More than one caused my controller to display nothing. Other view controllers can later be added lazily by implementing the UIPageViewControllerDelegate
and UIPageViewControllerDataSource
protocols.
这篇关于带有 UIPageViewController 的 UIPopoverController 不显示任何内容的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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