无法在 xcode 6 swift 中播放音频

Posted 2023-02-25

【中文标题】无法在 xcode 6 swift 中播放音频

【英文标题】：Unable to play audio in xcode 6 swift

【发布时间】：2014-11-30 11:05:02

【问题描述】：

import UIKit
import AVFoundation

class PlaySoundViewController: UIViewController 
    var audioplayer: AVAudioPlayer!

    override func viewDidLoad() 
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        if var filePath = NSBundle.mainBundle().pathForResource("movie_quote", ofType: "mp3") 
            var fileUrl = NSURL.fileURLWithPath(filePath)
            audioplayer = AVAudioPlayer(contentsOfURL: fileUrl, error: nil)


        else
        println("path file is empty")
        
    

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

    @IBAction func PlaySoundSlow(sender: UIButton) 
        audioplayer.play()
    

【参考方案1】：

我一般做一个声音类，然后用一个函数来调用声音播放，像这样：

声音类：

class Sound 
    //properties
    var fileName = ""
    var fileExtension = ""

    //custom init
    init(fileName: String, fileExtension: String) 
        self.fileName = fileName
        self.fileExtension = fileExtension
    

播放声音功能：

// 需要 AVAudioPlayer？实例

// 需要 AVFoundation 导入

// 需要 AVAudioPlayerDelegate

var audioPlayer: AVAudioPlayer()

func playSound（声音：声音）

让 dispatchQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0)

dispatch_async(dispatchQueue, [weak self] in
    let mainBundle = NSBundle.mainBundle()

    /* Find the location of our file to feed to the audio player */
    let filePath = mainBundle.pathForResource(sound.fileName, ofType:sound.fileExtension)

    if let path = filePath
        let fileData = NSData(contentsOfFile: path)

        var error:NSError?

        /* Start the audio player */
        self!.audioPlayer = AVAudioPlayer(data: fileData, error: &error)

        /* Did we get an instance of AVAudioPlayer? */
        if let player = self!.audioPlayer
            /* Set the delegate and start playing */
            player.delegate = self
            if player.prepareToPlay() && player.play()
                /* Successfully started playing */
             else 
                /* Failed to play */
            
         else 
            /* Failed to instantiate AVAudioPlayer */
        
    

)

希望这对您有所帮助。