ios - 以编程方式切换 View Controller 以在选项卡栏 Controller 中显示 View

Question

我试图弄清楚当我按下按钮时如何以编程方式将 View 从一个 View Controller 切换到选项卡栏 Controller 中的第一个 View Controller 。

目前我有一个带有三个按钮的 View Controller 。当我按下按钮时，我想切换。这是我针对该屏幕的以下代码。它被称为第二 View Controller 。

    import UIKit

    class SecondViewController: UIViewController {

    //Button Outlets
    @IBOutlet var ButtonEndOfShift: UIButton!
    @IBOutlet var ButtonMultiTimes: UIButton!
    @IBOutlet var ButtonEndAndLunch: UIButton!

    override func viewDidLoad() {

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

        //hides tab bar controller
        self.tabBarController?.tabBar.hidden = true
    }

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

    //Changes screen for End Of Shift Button
    @IBAction func ChangeNextViewLow(sender: AnyObject) {


        self.performSegueWithIdentifier("segue", sender: nil)
    }

    //Changes screen for Lunch and End Of Shift Button
    @IBAction func ChangeNextViewMedium(sender: UIButton) {
    }

    //Changes screen for Multiple Times button
    @IBAction func ChangeNextViewHigh(sender: UIButton) {
    }

}

Answer 1

我在 Storyboard 中添加了 UITabBarController，如下所示，请查看图片。

然后我编写了以下函数来帮助您。

// For navigate to Tabbar Controller
    @IBAction func btnClick () {
        self.performSegueWithIdentifier("GoToTabBar", sender: nil)
    }

    // For switching between tabs
    func switchTab (index : Int) {
       self.tabbarController.selectedIndex = index
    }

您还可以将 UITabBarController 设置为您的应用程序 RootViewController。