在Xcode 7/Swift 2中播放音频不起作用

Question

我目前正在使用Swift 2的Xcode 7 beta 4,尝试播放音频.我的代码中没有任何错误,但是当我按下播放按钮时,音频不会播放.我无法弄清楚出了什么问题.

import UIKit
import AVFoundation

class VesuviusViewController: UIViewController {

    @IBOutlet weak var PausePlay: UIButton!

    func playVes() {
        do {

        _ = try AVAudioPlayer(contentsOfURL: NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("Ves", ofType: "m4a")!))

        } catch {
            print("Error")
        }
    }

    @IBAction func playButtonPressed(sender: AnyObject) {
        playVes()
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.

    }
}

更新 正确的代码:

import UIKit
import AVFoundation

class VesuviusViewController: UIViewController {


@IBOutlet weak var PausePlay: UIButton!



@IBAction func playPressed(sender: AnyObject) {
    VesSet()
}
var audioPlayer: AVAudioPlayer!

    func VesSet(){


        do {
            self.audioPlayer =  try AVAudioPlayer(contentsOfURL: NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("Ves", ofType: "m4a")!))
            self.audioPlayer.play()

        } catch {
            print("Error")
        }


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

        // Do any additional setup after loading the view.

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.

    }
}

Answer 1

试试这个:

var audioPlayer: AVAudioPlayer! // Global variable

和玩法:

func playVes() {
        do {
            self.audioPlayer =  try AVAudioPlayer(contentsOfURL: NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("Ves", ofType: "m4a")!))
            self.audioPlayer.play()

        } catch {
            print("Error")
        }
    }

希望这可以帮助!