Question

我在尝试取消隐藏应用中的导航栏时遇到问题。我有一个在UIViewController中创建的UIPageViewController，如下所示：

//Hide the bar
self.navigationController.navigationBar.hidden=YES;

// Create page view controller
    self.pageViewController = [[UIPageViewController alloc] initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:nil];
    self.pageViewController.dataSource = self;


    UIPageControl *pageControl = [UIPageControl appearance];
    pageControl.pageIndicatorTintColor = [UIColor lightGrayColor];
    pageControl.currentPageIndicatorTintColor = [UIColor colorWithRed:229/255.0 green:145/255.0 blue:217/255.0 alpha:1];
    pageControl.backgroundColor = [UIColor whiteColor];



    //Call our helper method
    StickerContentViewController *startingViewController = [self viewControllerAtIndex:0];
    //Need to pass the first one, don't put them all in here
    NSArray *viewControllers = @[startingViewController];
    [self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];


    self.pageViewController.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);

    //setup
    [self addChildViewController:_pageViewController];
    [self.view addSubview:_pageViewController.view];
    [self.pageViewController didMoveToParentViewController:self];

当我使用[self.navigationController popViewControllerAnimated:YES];弹出UIViewController（包含UIPageViewController的那个）时，我无法取消导航栏以取消隐藏前一个屏幕。我尝试在viewWillDisappear，viewDidDissappear中放置self.navigationController.navigationBarHidden=NO;。我也尝试将它放在内容视图控制器中，但仍然没有运气。有人能给我一个指针，指出我在这里做错了吗？

Answer 1

修正了它，只是发布以防其他人有问题。我应该使用self.navigationController.navigationBar.hidden=YES;时使用self.navigationController.navigationBarHidden=YES;。不确定有什么区别。无论如何，我隐藏了viewDidLoad中的栏，并在viewWillDisappear中取消隐藏它，现在它可以正常工作。谢谢你们

弹出UIPageViewController后取消隐藏导航栏

1 个答案: