如何以编程方式在导航控制器中嵌入视图？

Question

我在 UITabBarController 中有 3 个视图控制器。只有一个视图控制器我想把它放在导航控制器中。这样做的正确方法是什么，以便只有一个视图控制器具有导航控制器？我希望 aController 在导航控制器中。

import UIKit

class TabBarController: UITabBarController {

    override func viewDidLoad() {
        super.viewDidLoad()
        let mController = MViewController()
        mpController.tabBarItem = UITabBarItem(title: "view1", image: UIImage(named: "viewoneimage"), tag: 0)



        let inputController = InputViewController()
        inputController.tabBarItem = UITabBarItem(title: "Input", image: UIImage(named: "plus"), tag: 1)

        let aController = ATableViewController()
        aController.tabBarItem = UITabBarItem(title: "custom", image: UIImage(named: "person.fill"), tag: 2)
        let navController = UINavigationController()
//        aController.navigationController = navController


        viewControllers = [mController, inputController, aController, navController]
        // Do any additional setup after loading the view.
    }




}

Answer 1

您必须将您的UIViewController 嵌入到Navigation Controllers 中，并使用您的Navigation Controllers 初始化您的标签菜单。

此外，对于每个标签，您将拥有不同的Navigation Controller

你的代码应该是这样的。

import UIKit

class TabBarController: UITabBarController {

    override func viewDidLoad() {
        super.viewDidLoad()
        let mController = MViewController()
        mpController.tabBarItem = UITabBarItem(title: "view1", image: UIImage(named: "viewoneimage"), tag: 0)
        let inputController = InputViewController()
        inputController.tabBarItem = UITabBarItem(title: "Input", image: UIImage(named: "plus"), tag: 1)
        let aController = ATableViewController()
        aController.tabBarItem = UITabBarItem(title: "custom", image: UIImage(named: "person.fill"), tag: 2)
        let navMController = UINavigationController(rootViewController: mpController)
        let navInputController = UINavigationController(rootViewController: inputController)
        let navaController = UINavigationController(rootViewController: aController)
        viewControllers = [navMController, navInputController, navaController]
    }
}