SpriteKit - didBecomeActive 时不显示暂停屏幕
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【中文标题】SpriteKit - didBecomeActive 时不显示暂停屏幕【英文标题】:SpriteKit - Pause screen doesn't show when didBecomeActive 【发布时间】:2016-01-24 11:01:00 【问题描述】:我的暂停系统可以在游戏内部完美运行,而且当应用程序移至后台然后再次激活时,游戏会保持暂停状态,但我现在的问题是当它激活时我的暂停屏幕不显示。
AppDelegate:
func applicationDidBecomeActive(application: UIApplication)
NSNotificationCenter.defaultCenter().postNotificationName("Pause", object: nil)
视图控制器:
override func viewDidLoad()
super.viewDidLoad()
let scene = GameScene()
// Configure the view.
let skView = self.view as! MainView
NSNotificationCenter.defaultCenter().addObserver(skView, selector: "setStayPaused", name: "Pause", object: nil)
skView.ignoresSiblingOrder = true
scene.scaleMode = .AspectFill
scene.size = skView.bounds.size
skView.presentScene(scene)
MainView(我的自定义skView):
class MainView: SKView
var stayPaused = false as Bool
override var paused: Bool
get
return super.paused
set
if (!stayPaused)
super.paused = newValue
stayPaused = false
func setStayPaused()
if (super.paused)
self.stayPaused = true
游戏场景:
override func didMoveToView(view: SKView)
NSNotificationCenter.defaultCenter().addObserver(self, selector: "pauseGame", name: "Pause", object: nil)
func pauseGame()
if isFirstTime == false // to make sure that the app did not just get launched
pauseScreen.hidden = false // doesn't show
pauseButton.hidden = false // doesn't show
view?.paused = true
scene?.paused = true
【问题讨论】:
【参考方案1】:设置暂停屏幕和按钮的隐藏属性无效,因为视图和/或场景已暂停。您需要暂时取消暂停视图,将隐藏属性设置为 false,返回主循环,然后重新暂停视图。这是一个如何做到这一点的示例。
AppDelegate:
func applicationWillResignActive(application: UIApplication)
NSNotificationCenter.defaultCenter().postNotificationName("PauseViewNotification", object:nil)
func applicationDidBecomeActive(application: UIApplication)
NSNotificationCenter.defaultCenter().postNotificationName("ShowPauseScreenNotification", object:nil)
MainVew(SKView 子类):
class MainView: SKView
override var paused: Bool
get
return super.paused
set
func pause()
super.paused = true
func resume()
super.paused = false
func togglePause()
super.paused = !super.paused
视图控制器:
override func viewDidLoad()
super.viewDidLoad()
if let scene = GameScene(fileNamed:"GameScene")
// Configure the view.
let skView = self.view as! MainView
NSNotificationCenter.defaultCenter().addObserver(skView, selector:Selector("pause"), name: "PauseViewNotification", object: nil)
游戏场景:
override func didMoveToView(view: SKView)
NSNotificationCenter.defaultCenter().addObserver(self, selector:Selector("pauseGame"), name: "ShowPauseScreenNotification", object: nil)
func pauseGame()
if (!isFirstTime)
pauseScreen.hidden = false
pauseButton.hidden = false
// Un-pause the view so the screen and button appear
if let customView = self.view as? MainView
customView.resume()
// Re-pause the view after returning to the main loop
let pauseAction = SKAction.runBlock(
[weak self] in
if let customView = self?.view as? MainView
customView.pause()
)
runAction(pauseAction)
isFirstTime = false
您可以在暂停状态之间切换
if let customView = self.view as? MyView
customView.togglePause()
【讨论】:
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