ios - 如何遍历标签栏控制器中包含的每个导航控制器

Question

如何从 tabBarController 遍历所有导航控制器？

Answer 1

for (UIViewController *viewController in self.tabBarController.viewControllers)
{
    // Do your thing...
}

Answer 2

for (UIViewController *viewController in tabBarController.viewControllers) {
  // do something here
}

Answer 3

因为这个问题也被标记为 Swift。以下是您可以在 swift 中尝试的变体：

1.

tabBarController?.viewControllers?.forEach{ viewController in

}

2.

for viewController in tabBarController?.viewControllers ?? []{

}

3.

guard let array = tabBarController?.viewControllers else {return}
for viewController in array{

}