我想用Swift播放一个声音。

我的代码在Swift 1.0中工作,但现在在Swift 2或更新版本中不再工作。

override func viewDidLoad() {
  super.viewDidLoad()

  let url:NSURL = NSBundle.mainBundle().URLForResource("soundName", withExtension: "mp3")!

  do { 
    player = try AVAudioPlayer(contentsOfURL: url, fileTypeHint: nil) 
  } catch _{
    return
  }

  bgMusic.numberOfLoops = 1
  bgMusic.prepareToPlay()

  if (Data.backgroundMenuPlayed == 0){
    player.play()
    Data.backgroundMenuPlayed = 1
  }
}

当前回答

如果代码没有产生任何错误,但你听不到声音-创建播放器作为一个实例:

   static var player: AVAudioPlayer!

对我来说,当我做这个改变时,第一个解决方案起作用了:)

其他回答

var soundEffect = AVAudioPlayer()

func playSound(_ buttonTag : Int){

    let path = Bundle.main.path(forResource: "note\(buttonTag)", ofType : "wav")!
    let url = URL(fileURLWithPath : path)

    do{
        soundEffect = try AVAudioPlayer(contentsOf: url)
        soundEffect?.play()
        // to stop the spound .stop()
    }catch{
        print ("file could not be loaded or other error!")
    }
}

工作在swift 4最新版本。ButtonTag是界面上按钮上的一个标签。笔记在与Main.storyboard平行的文件夹中的一个文件夹中。每个音符都被命名为note1、note2等。ButtonTag给出了被点击按钮的数字1、2等,并将其作为参数传递

首先导入这些库

import AVFoundation

import AudioToolbox    

像这样设置委托

   AVAudioPlayerDelegate

在按钮动作或其他动作上写这样漂亮的代码:

guard let url = Bundle.main.url(forResource: "ring", withExtension: "mp3") else { return }
    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
        try AVAudioSession.sharedInstance().setActive(true)
        player = try AVAudioPlayer(contentsOf: url, fileTypeHint: AVFileType.mp3.rawValue)
        guard let player = player else { return }

        player.play()
    }catch let error{
        print(error.localizedDescription)
    }

100%的工作在我的项目和测试

这是在Swift中查找和播放音频文件的基本代码。

将音频文件添加到Xcode中,并添加下面的代码。

import AVFoundation

class ViewController: UIViewController {

   var audioPlayer = AVAudioPlayer() // declare globally

   override func viewDidLoad() {
        super.viewDidLoad()

        guard let sound = Bundle.main.path(forResource: "audiofilename", ofType: "mp3") else {
            print("Error getting the mp3 file from the main bundle.")
            return
        }
        do {
            audioPlayer = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: sound))
        } catch {
            print("Audio file error.")
        }
        audioPlayer.play()
    }

    @IBAction func notePressed(_ sender: UIButton) { // Button action
        audioPlayer.stop()
    }
}

iOS 12 - Xcode 10 beta 6 - Swift 4.2

只使用1个IBAction并将所有按钮指向该1个动作。

import AVFoundation

var player = AVAudioPlayer()

@IBAction func notePressed(_ sender: UIButton) {
    print(sender.tag) // testing button pressed tag
    let path = Bundle.main.path(forResource: "note\(sender.tag)", ofType : "wav")!
    let url = URL(fileURLWithPath : path)
    do {
        player = try AVAudioPlayer(contentsOf: url)
        player.play()
    } catch {
        print ("There is an issue with this code!")
    }
}

如果代码没有产生任何错误,但你听不到声音-创建播放器作为一个实例:

   static var player: AVAudioPlayer!

对我来说,当我做这个改变时,第一个解决方案起作用了:)