PageViewController中特定视图控制器的隐藏/显示状态栏

Question

我有一个UIPageViewController包含3个视图控制器。我想隐藏前两个视图控制器的状态栏并显示最后一个视图控制器的状态栏。什么是最好的方法来做到这一点？

Answer 1

在你的PageViewController的代理中添加这个。

- (BOOL)prefersStatusBarHidden 
{ 
    PageContentViewController *controller = self.pageViewController.viewControllers[0]; 
    if (controller.pageIndex == 2) { 
     return NO; 
    } else { 
     return YES; 
    } 
} 

- (void)pageViewController:(UIPageViewController *)pageViewController didFinishAnimating:(BOOL)finished previousViewControllers:(NSArray *)previousViewControllers transitionCompleted:(BOOL)completed 
{ 
    if (completed) { 
     PageContentViewController *controller = self.pageViewController.viewControllers[0]; 
     NSUInteger pageIndex = controller.pageIndex; 

     // only update status bar when transition is between page 2 and page 3 
     if (pageIndex == 1 || pageIndex == 2) { 
      [self setNeedsStatusBarAppearanceUpdate]; 
     } 
    } 
}