獲取導航控制器在tabbarController中的tabbarItem的堆棧

Question

我想獲得UIViewControllers的列表，即UINavigationController堆棧在UITabBarController的tabbaritem的特定索引處。 請精心製作..！ 請你們攜手

Answer 1

這樣做：

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 
    } 
} 

Answer 2

如果您要檢查這個當標籤被改變實施的UITabBarControllerDelegate回調：

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