Ios 在swift中添加不带选项卡栏控制器的选项卡栏

我需要在没有选项卡栏控制器的情况下在视图中添加选项卡栏，因为在我的

prepareforsgue

函数中，我将数据传递到包含选项卡栏的视图

我从对象库及其项中添加选项卡栏，并在视图类中添加uitabardelegate。 我的代码如下：

class SchedaCompletaVC: UIViewController, UITabBarDelegate {

var event:Event! // data passing from prepareforsegue

@IBOutlet var mainTabBar:UITabBar!
var descrizioneTab:UIViewController! //if i click on first tab, so my default view 
var mappaTab:UIViewController! // second tab

override func viewDidLoad() {
    super.viewDidLoad()
    println("event \(event.eventId)")

    // Do any additional setup after loading the view.
}

func tabBar(tabBar: UITabBar, didSelectItem item: UITabBarItem!) {
    switch (item.tag) {
    case 1:
        self.view.insertSubview(descrizioneTab.view.belowSubview(mainTabBar)) //here I had error
       break;
    case 2:
        //if second tab is selected
        break;
    default:
        break;
    }
}

我从objective-c的whitch那里得到了这个代码，我试着用swift转换它

我的代码不起作用，我不知道该怎么办

请帮忙。谢谢大家!

更新：

---

我的故事板是这样的：

我有一个Objective-C解决方案。它很好用，你可以把它转换成Swift

ViewController.h文件代码

        #import <UIKit/UIKit.h>
        @interface ViewController : UIViewController<UITabBarDelegate>
        @property (weak, nonatomic) IBOutlet UITabBar *mainTabBar;

        @end

别忘了

1） 选项卡栏项的标记（第一个选项卡项的标记为1，第二个选项卡项的标记为2）

2） ViewController的情节提要标识符（分别为第一个和第二个）

---

以下是swift版本：-

import UIKit

class ViewController: UIViewController, UITabBarDelegate {

    @IBOutlet weak var mainTabBar: UITabBar!

    var viewController1: UIViewController?
    var viewController2: UIViewController?


    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func tabBar(tabBar: UITabBar, didSelectItem item: UITabBarItem!) {

        switch item.tag {

        case 1:
            if viewController1 == nil {

                var storyboard = UIStoryboard(name: "Main", bundle: nil)
                viewController1 = storyboard.instantiateViewControllerWithIdentifier("ViewController1") as! ViewController1
        }
            self.view.insertSubview(viewController1!.view!, belowSubview: self.mainTabBar)
            break


        case 2:
            if viewController2 == nil {

                var storyboard = UIStoryboard(name: "Main", bundle: nil)
                viewController2 = storyboard.instantiateViewControllerWithIdentifier("ViewController2") as! ViewController2
        }
            self.view.insertSubview(viewController2!.view!, belowSubview: self.mainTabBar)
            break

        default:
            break

        }


    }


}

然后单击UITabBarItem并按住ctrl键将其拖动到viewcontroller，然后单击“委派”

选项卡栏项的标记（第一个选项卡项的标记为1，第二个选项卡项的标记为2）

---

ViewController的情节提要标识符（分别为ViewController1和ViewController2）

什么是“我的代码不工作”的确切含义？您将链接代码转换为Swift的尝试只完成了一半。。。你真的想知道它不起作用吗？我是编程新手，你能告诉我我错过了什么吗？你是在使用故事板吗？我不能清楚地理解你的问题，你能正确地解释一下吗？有没有办法在每次不创建视图控制器的新实例的情况下实现这一点？

import UIKit

class ViewController: UIViewController, UITabBarDelegate {

    @IBOutlet weak var mainTabBar: UITabBar!

    var viewController1: UIViewController?
    var viewController2: UIViewController?


    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func tabBar(tabBar: UITabBar, didSelectItem item: UITabBarItem!) {

        switch item.tag {

        case 1:
            if viewController1 == nil {

                var storyboard = UIStoryboard(name: "Main", bundle: nil)
                viewController1 = storyboard.instantiateViewControllerWithIdentifier("ViewController1") as! ViewController1
        }
            self.view.insertSubview(viewController1!.view!, belowSubview: self.mainTabBar)
            break


        case 2:
            if viewController2 == nil {

                var storyboard = UIStoryboard(name: "Main", bundle: nil)
                viewController2 = storyboard.instantiateViewControllerWithIdentifier("ViewController2") as! ViewController2
        }
            self.view.insertSubview(viewController2!.view!, belowSubview: self.mainTabBar)
            break

        default:
            break

        }


    }


}