iphone - 在 tabbarController 中获取 NavigationController 堆栈的 tabbarItem

Question

我想在 .tabbaritem 的特定索引处获取UIViewControllersie堆栈列表。请详细说明..！请大伙牵手UINavigationControllerUITabBarController

Answer 1

如果您想在选项卡更改时检查这一点，请实现UITabBarControllerDelegate的回调：

-(void)tabBarController:(UITabBarController *)tabBarController didSelectViewController:(UIViewController *)viewController{
    //if you're using navigationController
    UINavigationController *navC=(UINavigationController *)viewController;
    NSArray *arrayVc=navC.viewControllers;
    NSLog(@"%@",arrayVc);
}

Answer 2

做这个：

NSArray *arrControllers = self.tabBarController.viewControllers;
for(UIViewController *viewController in arrControllers)
{
   if([viewController isKIndOfClass:[UINavigationController class]])
   {
     //NavigationController
     UINavigationController *navCtrl = (UINavigationController *)viewController;
     NSLog(@"%@",navCtrl.viewControllers);
   }
   else
   {
     // view controller
   }
}