swift - 如何在 Swift 中停止/取消 playSoundFileNamed？

Question

我正在尝试制作一个按钮，按下时会播放声音，再次按下时声音会停止。我正在使用 playSoundFileNamed: runAction: withKey: 和 removeActionForKey，但它不起作用。

我的另一个问题是，是否有一种方法不仅可以停止声音，还可以暂停它(这样它就会从暂停的同一部分开始，而不是从头开始)。我在 stack overflow 看到过类似的话题，但还没有找到我的问题的答案。提前谢谢你。

import SpriteKit
import AVFoundation

var firesoundon = false

private var backgroundMusicPlayer: AVAudioPlayer!

class GameScene2: SKScene {

override func didMoveToView(view: SKView) {

    setUpScenery()    
}

private func setUpScenery() {


    //BACKGROUND
    let background = SKSpriteNode(imageNamed: backgroundImage, normalMapped: true)
    addChild(background)


    //FIRE BUTTON

    var firePath = UIBezierPath() 
    firePath.moveToPoint(CGPointMake(0, 0)) 
    firePath.addCurveToPoint(CGPointMake(115, 215), controlPoint1: CGPointMake(5, 170), controlPoint2: CGPointMake(90, 190)) ....

//^我只是在这里减少了很多路径 - 按钮被绘制并且它是可插入的/可行的。

    let fireNode = SKShapeNode(path: firePath.CGPath, centered: false)
    fireNode.alpha = 0.2

    fireNode.position = CGPointMake(size.width/2, 0)
    fireNode.name = "fireNode"

        self.addChild(fireNode)
}

//所以，这对我来说是一个主要的无赖:

func fireturnonoff () {

    if firesoundon == false {

        var playguitar = SKAction.playSoundFileNamed("guitar.wav", waitForCompletion: true)
        runAction(playguitar, withKey: "soundsison")

        firesoundon = true
        println("firesoundon is == \(firesoundon)")

    }

    else if firesoundon == true {

        removeActionForKey("soundsison")
        println("REMOVED")

        firesoundon = false
        println("firesoundon is == \(firesoundon)")

    }

}


override func touchesEnded(touches: Set<NSObject>, withEvent event: UIEvent) {
    for touch: AnyObject in touches {
        let touch = touches.first as? UITouch

        let touchLocation = touch!.locationInNode(self)
        let node: SKNode = nodeAtPoint(touchLocation)

        if node.name == "fireNode" {

            fireturnonoff()

        }
}
}

Answer 1

使用AVAudioPlayer .它允许您开始、停止、暂停、控制音量、循环次数和其他功能。