如何在swift中暂停和恢复NSTimer.scheduledTimerWithTimeInterval？ [英] How can I pause and resume NSTimer.scheduledTimerWithTimeInterval in swift?

问题描述

我正在开发游戏，我想创建一个暂停菜单。这是我的代码：

I'm developing a game and I want to create a pause menu. Here is my code:

self.view?.paused = true

但是NSTimer.scheduledTimerWithTimeInterval仍在运行..

but NSTimer.scheduledTimerWithTimeInterval still running..

 for var i=0; i < rocketCount; i++ {
 var a:NSTimeInterval = 1
 ii += a
 delaysShow =   2.0 + ((stimulus + interStimulus) * ii)       
 var time3 = NSTimer.scheduledTimerWithTimeInterval(delaysShow!, target: self, selector: Selector("showRocket:"), userInfo: rocketid[i]  , repeats: false)
 }

我希望time3在玩家点击暂停菜单时暂停计时器并在玩家回到游戏时继续运行计时器，但我怎么能暂停NSTimer.scheduledTimerWithTimeInterval？请帮助我。

I want time3 to pause the timer when player click pause menu and continue run the timer when player come back to the game, but how can I pause NSTimer.scheduledTimerWithTimeInterval? help me please.

推荐答案

您需要使其无效并重新创建它。然后你可以使用 isPaused bool来跟踪状态，如果你有相同的按钮来暂停和恢复计时器：

You need to invalidate it and recreate it. You can then use an isPaused bool to keep track of the state if you have the same button to pause and resume the timer:

var isPaused = true
var timer = NSTimer()    
@IBAction func pauseResume(sender: AnyObject) {     
    if isPaused{
        timer = NSTimer.scheduledTimerWithTimeInterval(0.1, target: self, selector: Selector("somAction"), userInfo: nil, repeats: true)
        isPaused = false
    } else {
        timer.invalidate()
        isPaused = true
    }
}

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