ios - 同时使用导航 Controller 和标签栏

Question

我使用导航 Controller 来推送我的 View 。像这样:

func showDetailForCategory(product: Category){

    let storyBoard = UIStoryboard(name: "Main", bundle:nil)
    let categoryViewController =  storyBoard.instantiateViewController(withIdentifier: "categoryDetail") as! CategoryViewController
    
    categoryViewController.categoryId = product.id
    self.navigationController?.pushViewController(categoryViewController, animated:true)
    
}

它工作得很好。但我也想使用工具栏。我的 AppDelegate 如下所示

    let layout = UICollectionViewFlowLayout()
    let featuredAppsController = FeaturedAppsController(collectionViewLayout: layout)
    window?.rootViewController = UINavigationController(rootViewController: featuredAppsController)
    
    let vc1 = featuredAppsController
    vc1.tabBarItem.title = "Orange"
    vc1.tabBarItem.image = UIImage(named: "heart")
    
    // Set up the second View Controller
    let vc2 = UIViewController()
    vc2.view.backgroundColor = UIColor.purple
    vc2.tabBarItem.title = "Purple"
    vc2.tabBarItem.image = UIImage(named: "star")
    
    // Set up the Tab Bar Controller to have two tabs
    let tabBarController = UITabBarController()
    tabBarController.viewControllers = [vc1, vc2]
    
    // Make the Tab Bar Controller the root view controller
    window?.rootViewController = tabBarController
    window?.makeKeyAndVisible()

我添加了 TabBarController。它工作正常。但是我的 NavigationController 不起作用。我认为这是因为我为其中两个设置了 rootViewController。我应该如何解决这个问题？感谢您的宝贵时间。

Answer 1

你需要这样的东西

let firstVc = UIViewController()
let secondVc = UIViewController()

let firstNav = UINavigationController(rootViewController: firstVc)
let secondNav = UINavigationController(rootViewController: secondVc)

let tabBarController = UITabBarController()
tabBarController.viewControllers = [firstNav, secondNav]

window?.rootViewController = tabBarController
window?.makeKeyAndVisible()

当然，填写你的类(class)等等，但基本思想是这样的