Question

我正在使用Swift在SpriteKit中制作游戏，目前有两个viewControllers。第一个viewController是GameViewController，它使用故事板显示菜单，其中一些按钮位于界面构建器中。菜单上有一个播放按钮，转换到显示gameScene的第二个viewController。两个viewControllers加载SKScene。

要从一个视图控制器转换到另一个视图控制器，然后再返回，我将使用在故事板中创建的segues。

我遇到的问题是，当我在viewControllers之间切换导致应用程序最终崩溃时，内存会增加。我有一种感觉，viewControllers只是堆叠在一起。这是我的GameViewController和GameSceneViewController的代码。

GameViewController：

class GameViewController: UIViewController, GKGameCenterControllerDelegate {

//MARK: Variables
var scene: Menu!
@IBOutlet weak var settingsBtn: UIButton!
@IBOutlet weak var leaderboardsBtn: UIButton!
@IBOutlet weak var storeBtn: UIButton!
@IBOutlet weak var playBtn: UIButton!

@IBAction func play(sender: UIButton) {


}

//MARK: Button Animations

func menuButtonAnimations(){

    settingsBtn.transform = CGAffineTransformMakeTranslation(0, 200)
    leaderboardsBtn.transform = CGAffineTransformMakeTranslation(0, 200)
    storeBtn.transform = CGAffineTransformMakeTranslation(0, 200)

    springWithDelay(0.5, 0.7, {
        self.settingsBtn.transform = CGAffineTransformMakeTranslation(0, 0)
    })
    springWithDelay(0.5, 0.75, {
        self.leaderboardsBtn.transform = CGAffineTransformMakeTranslation(0, 0)
    })
    springWithDelay(0.5, 0.8, {
        self.storeBtn.transform = CGAffineTransformMakeTranslation(0, 0)
    })

}

//MARK: The View
override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)

    // Configure the view.
    let skView = self.view as SKView
    skView.showsFPS = false
    skView.showsNodeCount = false
    skView.showsPhysics = false

    skView.ignoresSiblingOrder = true

    scene = Menu(size: skView.bounds.size)
    scene.scaleMode = .AspectFill

    skView.presentScene(scene)

    //Button Animation
    menuButtonAnimations()

}

//MARK: Extra Stuff
override func shouldAutorotate() -> Bool {
    return true
}

override func supportedInterfaceOrientations() -> Int {
    if UIDevice.currentDevice().userInterfaceIdiom == .Phone {
        return Int(UIInterfaceOrientationMask.AllButUpsideDown.rawValue)
    } else {
        return Int(UIInterfaceOrientationMask.All.rawValue)
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Release any cached data, images, etc that aren't in use.
}

override func prefersStatusBarHidden() -> Bool {
    return true
}
}

GameSceneViewController：

class GameSceneViewController: UIViewController{

    //MARK: Variables

    @IBOutlet weak var returnBtn: UIButton!

    //MARK: Helper Functions

    //MARK: The View
    override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated)

        // Configure the view.
        var scene: GameScene!
        let skView = self.view as SKView
        skView.showsFPS = false
        skView.showsNodeCount = false
        skView.showsPhysics = false

        skView.ignoresSiblingOrder = true

        scene = GameScene(size: skView.bounds.size)
        scene.scaleMode = .AspectFill

        skView.presentScene(scene)

        //Notifications
    }

segues是使用故事板中的链接创建的模态segue。

如何在不增加内存的情况下在两个viewControllers之间来回切换的任何帮助都会很棒！

Answer 1

如果一个视图控制器通过模态segue呈现另一个视图控制器，则应使用dismissViewControllerAnimated:completion:返回第一个视图控制器，而不是堆叠模态演示文稿。

Answer 2

我相信你可以做IBAction来解雇模态视图：

目标-C：

[self dismissViewControllerAnimated:YES completion:nil];

夫特：

self.dismissViewControllerAnimated(true, completion: nil)

（Dismiss Modal View）

我相信后退按钮可以从包含NSViewController的dismissController:链接到解除模态视图（至少对于Cocoa故事板，无论如何）。

转换ViewControllers

2 个答案: