我正在使用 SpriteKit 制作游戏。 我有 3 个 viewControllers:选择 level vc、game vc 和 win vc。 游戏结束后，我想显示 win vc，然后如果我在 win vc 上按 OK 按钮，我想关闭 win vc 和游戏 vc(从堆栈中弹出两个 View Controller )。但我不知道该怎么做，因为如果我调用

self.dismissViewControllerAnimated(true, completion: {})    

win vc(栈顶)被dismissed，所以我不知道在哪里再次调用它来dismiss game vc。 有什么办法可以在不使用导航 Controller 的情况下解决这个问题吗？

这是第一个VC:(请注意我下面以“//”开头的评论)

class SelectLevelViewController: UIViewController { // I implemented a UIButton on its storyboard, and its segue shows GameViewController
    override func viewDidLoad() {
        super.viewDidLoad()
    }
}

这是第二个VC:

class GameViewController: UIViewController, UIPopoverPresentationControllerDelegate {
    var scene: GameScene!
    var stage: Stage!

    var startTime = NSTimeInterval()
    var timer = NSTimer()
    var seconds: Double = 0
    var timeStopped = false

    var score = 0

    @IBOutlet weak var targetLabel: UILabel!
    @IBOutlet var displayTimeLabel: UILabel!
    @IBOutlet weak var scoreLabel: UILabel!
    @IBOutlet weak var gameOverPanel: UIImageView!
    @IBOutlet weak var shuffleButton: UIButton!
    @IBOutlet weak var msNum: UILabel!

    var mapNum = Int()
    var stageNum = Int()

    var tapGestureRecognizer: UITapGestureRecognizer!

    override func viewDidLoad() {
        super.viewDidLoad()

        let skView = view as! SKView
        skView.multipleTouchEnabled = false

        scene = GameScene(size: skView.bounds.size)
        scene.scaleMode = .AspectFill
        msNum.text = "\(mapNum) - \(stageNum)"

        stage = Stage(filename: "Map_0_Stage_1")
        scene.stage = stage
        scene.addTiles()
        scene.swipeHandler = handleSwipe

        gameOverPanel.hidden = true
        shuffleButton.hidden = true

        skView.presentScene(scene)

        Sound.backgroundMusic.play()

        beginGame()
    }

    func beginGame() {
        displayTimeLabel.text = String(format: "%ld", stage.maximumTime)
        score = 0
        updateLabels()

        stage.resetComboMultiplier()

        scene.animateBeginGame() {
            self.shuffleButton.hidden = false
        }

        shuffle()

        startTiming()
    }

    func showWin() {
        gameOverPanel.hidden = false
        scene.userInteractionEnabled = false
        shuffleButton.hidden = true

        scene.animateGameOver() {
            self.tapGestureRecognizer = UITapGestureRecognizer(target: self, action: "hideWin")
            self.view.addGestureRecognizer(self.tapGestureRecognizer)
        }
    }

    func hideWin() {
        view.removeGestureRecognizer(tapGestureRecognizer)
        tapGestureRecognizer = nil

        gameOverPanel.hidden = true
        scene.userInteractionEnabled = true

        self.performSegueWithIdentifier("win", sender: self) // this segue shows WinVC but idk where to dismiss this GameVC after WinVC gets dismissed...
    }

    func shuffle() {...}
    func startTiming() {...}
}

这是第三个VC:

class WinVC: UIViewController {

    @IBOutlet weak var awardResult: UILabel!

    @IBAction func dismissVC(sender: UIButton) {
        self.dismissViewControllerAnimated(true, completion: {}) // dismissing WinVC here when this button is clicked
    }

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }

}

最佳答案

@Ken Toh 的评论在这种情况下对我有用——在其他所有内容都被取消后，从您想要显示的 View Controller 中调用取消。

如果您有 3 个呈现的 View Controller A、B 和 C 的“堆栈”，其中 C 在顶部，然后调用 A.dismiss(animated: true, completion: nil) 将同时关闭 B 和 C。

如果您没有对堆栈根的引用，您可以将几个访问链接到 presentingViewController 以到达它。像这样:

self.presentingViewController?.presentingViewController?.dismiss(animated: true, completion: nil)

关于ios - 同时关闭多个 View Controller ，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/30990507/