以编程方式切换到另一个选项卡并切换到第一个视图控制器？ [英] Programmatically switch to another tab AND switch to the first view controller?

问题描述

如何以编程方式切换到另一个标签并转到导航堆栈中的第一个视图？

我可以切换到另一个标签页。

  self.tabBarController.selectedIndex = 4; 
  

但是，我还需要在该选项卡的导航堆栈中切换不同的视图控制器。 / p>

我该怎么做？

一旦我运行上面的代码，它就会切换，但是导航堆栈中当前加载的视图控制器。

我的视图控制器被加载到5个导航控制器中，这些控制器被添加到app delegate中的选项卡栏。

解决方案

我假设你的 UITabBarController中有 UINavigationController s 。如果是这种情况，您可以使用 popToRootViewControllerAnimated：转到第一个视图控制器。

  int index = 4; 
 self.tabBarController.selectedIndex = index; 
 [self.tabBarController.viewControllers [index] popToRootViewControllerAnimated：NO]; 
  

How do I programmatically switch to another tab and go to the first view in the navigation stack ?

I can switch to a different tab.

self.tabBarController.selectedIndex = 4;

However, I also need to switch the a different view controller in the navigation stack of that tab.

How do I do that?

As soon as I run the code above, it switches, but to the currently loaded view controller in the navigation stack.

My view controllers are loaded into 5 navigation controllers which are added to the tab bar in app delegate.

解决方案

I assume you have UINavigationControllers in your UITabBarController. If that's the case you can use popToRootViewControllerAnimated: to go to the first view controller.

int index = 4;
self.tabBarController.selectedIndex = index;
[self.tabBarController.viewControllers[index] popToRootViewControllerAnimated:NO];

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