tabBarController和navigationControllers在横向模式中，第二集 [英] tabBarController and navigationControllers in landscape mode, episode II

问题描述

我有一个UITabBarController，每个标签处理一个不同的UIViewController，根据需要推送堆栈的新控制器。我需要在其中两个选项卡中，当达到特定控制器时，能够旋转iPhone并以横向模式显示视图。经过艰苦的努力，我发现必须继承UITabBarController以覆盖shouldAutorotateToInterfaceOrientation。但是，如果我只是在实现中返回YES，则会出现以下不良副作用：

旋转iPhone时，每个选项卡中的每个控制器都会自动进入横向模式。 / p>

甚至覆盖每个控制器中的shouldAutorotateToInterfaceOrientation以返回NO不起作用：当iPhone旋转时，控制器处于横向模式。

我在子类UITabBarController中实现了shouldAutorotateToInterfaceOrientation，如下所示：

   - （BOOL）shouldAutorotateToInterfaceOrientation：（UIInterfaceOrientation）interfaceOrientation 
 {
 if（[self selectedIndex] == 0 || [self selectedIndex] == 3）
返回YES; 
 
返回NO; 
} 
  

因此，我感兴趣的两个标签实际上只能获得横向模式的支持。
有没有办法在特定标签的堆栈上支持特定控制器的横向模式？

我试过，但没有成功，像是

（BOOL）shouldAutorotateToInterfaceOrientation：（UIInterfaceOrientation）interfaceOrientation {

  if（[self selectedIndex] == 0 || [self selectedIndex] == 3）
 {
 if（[[self selectedViewController] isKindOfClass：[landscapeModeViewController class]]）
返回YES; 
} 
 
返回NO; 
  

}

此外，我尝试过使用委托方法didSelectViewController，没有成功。
非常感谢任何帮助。
谢谢。

解决方案

这对我有用：

   - （BOOL）shouldAutorotateToInterfaceOrientation：（UIInterfaceOrientation）interfaceOrientation {
 if（self.selectedIndex == 0&& [[[self.viewControllers objectAtIndex：0] visibleViewController] isKindOfClass：[MyViewController class]]）
返回YES; 
其他
返回NO; 
} 
  

I have a UITabBarController, and each tab handles a different UIViewController that pushes on the stack new controllers as needed. In two of these tabs I need, when a specific controller is reached, the ability to rotate the iPhone and visualize a view in landscape mode. After struggling a lot I have found that it is mandatory subclassing UITabBarController to override shouldAutorotateToInterfaceOrientation. However, if i simply return YES in the implementation, the following undesirable side effect arises:

every controller in every tab is automatically put in landscape mode when rotating the iPhone.

Even overriding shouldAutorotateToInterfaceOrientation in each controller to return NO does not work: when the iPhone is rotated, the controller is put in landscape mode.

I implemented shouldAutorotateToInterfaceOrientation as follows in the subclassed UITabBarController:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    if([self selectedIndex] == 0 || [self selectedIndex] == 3)
        return YES;

    return NO;
}

So that only the two tabs I am interested in actually get support for landscape mode. Is there a way to support landscape mode for a specific controller on the stack of a particular tab?

I tried, without success, something like

(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

if([self selectedIndex] == 0 || [self selectedIndex] == 3)
{   
   if ([[self selectedViewController] isKindOfClass: [landscapeModeViewController class]])
           return YES;
    }

     return NO;

}

Also, I tried using the delegate method didSelectViewController, without success. Any help is greatly appreciated. Thank you.

解决方案

This worked for me:

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    if(self.selectedIndex == 0 && [[[self.viewControllers objectAtIndex:0] visibleViewController] isKindOfClass:[MyViewController class]])
        return YES;
    else
        return NO;
}

这篇关于tabBarController和navigationControllers在横向模式中，第二集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！