ios - 以模态方式呈现 ViewController 时如何禁用所有 UITabBarItems？

Question

我已经在我的应用中实现了 UITabBar。在一个 UITabBar 项目的 ViewController 内部，我展示了另一个 模态呈现 的 ViewController。在此阶段，我想禁用所有 UITabBar 项目并在 willdisappear 中重新启用。

Inside the following delegate, if I get the presented modally ViewController then, on comparing I can return without any action. But I'm confused on how to get visible ViewController which is presented modally. Will this approach works?

 (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController{
//HOW CAN I GET HERE VISIBLE VIEWCONTROLLER I.E. PRESENTED MODALLY VIEWCONTROLLER.
}

Answer 1

禁用:

self.tabBarController.tabBar.userInteractionEnabled = NO;

启用

self.tabBarController.tabBar.userInteractionEnabled = YES;