Swift 2-AVAudioPlayer無法播放音頻

Question

我正在嘗試使用AVAudioPlayer播放聲音，但無法播放。 我嘗試了設備（iPhone 6s）和模擬器。 我沒有收到任何錯誤，它記錄了它的播放。 當我在audioPlayer.play（）之前設置斷點並越過它時，它會播放幾秒鍾，然后停止。 我的代碼：

let soundURL = NSBundle.mainBundle().URLForResource("test", withExtension: "mp3")
        do {
            try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
            try AVAudioSession.sharedInstance().setActive(true)
            if let soundURL = soundURL {
                let audioPlayer = try AVAudioPlayer(contentsOfURL: soundURL)
                audioPlayer.volume = 1
                audioPlayer.delegate = self
                audioPlayer.prepareToPlay()
                print(audioPlayer.duration)
                audioPlayer.play()
                print("PLAYED")
            }
        }catch {
            print("Error getting the audio file")
        }

Answer 1

這是一個有效的例子。 我不確定相對於其余代碼，您在何處具有上面顯示的代碼。 確保您的設備音量未處於靜音狀態且已打開...

 //declare these as instance variables
var AudioURL = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("FileName", ofType: "mp3")!)
var AudioPlayer = AVAudioPlayer()

//inside viewDidLoad establish your AVAudioSession and configure the AudioPlayer with the contents of URL
override func viewDidLoad() {
   super.viewDidLoad()

   do {
       try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
        //print("AVAudioSession Category Playback OK")
    do {
        try AVAudioSession.sharedInstance().setActive(true)
          //print("AVAudioSession is Active")
    } catch let error as NSError {
        print(error.localizedDescription)
    }
   } catch let error as NSError {
       print(error.localizedDescription)
   }


   do {
       try AudioPlayer  = AVAudioPlayer(contentsOfURL: AudioURL, fileTypeHint: nil)
   } catch {
       print("errorin do-try-catch")
   }
}

  //play audio
  @IBAction func playAudio(sender: AnyObject){
      AudioPlayer.play()
  }