如何播放多个音频文件

问题描述：

我在主StoryBoard上创建了4个UIButton。如何播放多个音频文件

我想“Button4”在一行中实现其他按钮功能。这意味着当我按下按钮4时，应该首先播放播放器1，播放器2之后以及播放器3之后播放。

但是，当我按下“Button4”时，同时播放“Button2”和“Button3” 。

 fileprivate var player1:AVAudioPlayer? 
     fileprivate var player2:AVAudioPlayer? 
     fileprivate var player3:AVAudioPlayer? 

     let url1 = Bundle.main.bundleURL.appendingPathComponent("music1.mp3") 
     let url2 = Bundle.main.bundleURL.appendingPathComponent("music2.mp3") 
     let url3 = Bundle.main.bundleURL.appendingPathComponent("music3.mp3") 

     @IBAction func pushButton1(sender: UIButton) { 
      Player(url: url1) 
     } 

     @IBAction func pushButton2(sender: UIButton) { 
      Player1(url: url2) 
     } 

     @IBAction func pushButton3(_ sender: UIButton) { 
      Player2(url: url1, url2: url2, url3: url3) 
     } 

//"yourButton2" and "yourButton3" is played at same time in this code at player2 

     func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) { 
      if (player === player1) { 
       yourButton.isSelected = false 
      } else if (player === player2) { 
       yourButton2.isSelected = false 
      } else if (player === player3) { 
       yourButton.isSelected = false 
       player2!.play() 
       yourButton2.isSelected = true 
       player2!.play() 
       yourButton3.isSelected = true 
       player1!.play() 
      } 
     } 

     func Player(url: URL) { 
      do { 
       try player1 = AVAudioPlayer(contentsOf:url) 
       player1!.play() 
       yourButton.isSelected = true 
       player1!.delegate = self 
      } catch { 
       print(error) 
      } 
     } 

     func Player1(url: URL) { 
      do { 
       try player2 = AVAudioPlayer(contentsOf:url) 
       player2!.play() 
       yourButton2.isSelected = true 
       player2!.delegate = self 

      } catch { 
       print(error) 
      } 
     } 

     func Player2(url: URL, url2: URL, url3: URL) { 
      do { 
       try player3 = AVAudioPlayer(contentsOf:url) 
       try player2 = AVAudioPlayer(contentsOf: url2) 
       try player1 = AVAudioPlayer(contentsOf: url3) 
       player3!.play() 
       yourButton.isSelected = true 
       player3!.delegate = self 
       player2!.delegate = self 
       player1!.delegate = self 
      } catch { 
       print(error) 
      } 
     }

用UIAudio（UIAudio ...）链接UIAudio。编辑**重写... –

答

与使用AVAudioPlayer不同，AVQueuePlayer怎么样？

这里有一个简单的例子：

var files = ["file1", "file2", "file3"] 

var player: AVQueuePlayer = { 
    var pathArray = [String]() 
    files.forEach { resource in 
     if let path = Bundle.main.path(forResource: resource, ofType: "mp3") { 
      pathArray.append(path) 
     } 
    } 

    var urlArray = [URL]() 
    pathArray.forEach { path in 
     urlArray.append(URL(fileURLWithPath: path)) 
    } 

    var playerItems = [AVPlayerItem]() 
    urlArray.forEach { url in 
     playerItems.append(AVPlayerItem(url: url)) 
    } 

    let player = AVQueuePlayer(items: playerItems) 
    player.actionAtItemEnd = AVPlayerActionAtItemEnd.advance 

    return player 
}()

，并在按钮的动作：

@IBAction func buttonTapped(_ sender: UIButton) { 
    files = ["file2", "file3", "file1"] 
    player.play() 
}

诚然，这是非常快速和肮脏的事，但那种喜欢这一点，因为我们传递了文件阵列到播放器中。为代码找到更多优化应该不会太困难。

编辑：意识到我没有传入一个AVPlayerItems数组，所以更新。

我会尝试使用AVQueuePlayer，谢谢！ – rebecca87

没问题。如果您有其他问题，请告诉我。 – jasonnoahchoi

感谢它与AVQueuePlayer！ – rebecca87

答

编辑....

每个按钮，1，2，3等等工作，但 “按钮2” 是有点混的...

无论如何，重释？

如何播放多个音频文件

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