单击选项卡栏时关闭当前导航控制器

问题描述

我有一个标签栏控制器，在主视图控制器中我有一个导航控制器.

I have got a tab bar controller and in home view controller i have a navigation controller.

-标签栏控制器

-- HomeVC

--- VC1 导航推送 -> VC2

--- VC1 navigation push -> VC2

在 VC1 中导航栏没有隐藏，但在 VC2 中是隐藏的.我用 viewwillappear 和 viewwilldisappear 控制它.

In VC1 navigation bar is not hidden but inside VC2 is hidden. And im controlling it with viewwillappear and viewwilldisappear.

    override func viewWillAppear(_ animated: Bool) {
    navigationController?.navigationBar.barStyle = .blackTranslucent
}
override func viewWillDisappear(_ animated: Bool) {
    navigationController?.navigationBar.isHidden = false
}

但是没有滑动就回到VC1，我的意思是点击标签栏homeVC图标隐藏导航栏.我想关闭或弹出当前视图控制器并返回到 VC1.

But turning back to the VC1 without swipe, I mean clicking tab bar homeVC icon hides navigation bar. I want to dismiss or pop current viewcontroller and turn back to VC1.

推荐答案

所以你可以通过 UINavigationController 的 popToRootViewController 来做到这一点.您必须在 UITabBarDelegate 的 tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) 方法中处理此问题.

So you can do this by popToRootViewController of UINavigationController. you have to handle this in tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) method of UITabBarDelegate.

override func tabBar(_ tabBar: UITabBar, didSelect item: UITabBarItem) {
    if let rootView = self.viewControllers!["Index of VC1 Controller"] as? UINavigationController {
        rootView.popToRootViewController(animated: false)
    }
}

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