Swift如何在不继承AVAudioPlayer的类上使用AVAudioPlayerDelegate？

Question

class myClass: AVAudioPlayerDelegate{ 
    var player = AVAudioPlayer() 

    init(){ 
     player.delegate = self 
    } 

    func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) { 
      print("The song ended") 
    } 
} 

我正在学习Swift并试图制作一个音乐播放应用程序。我有自定义类，其AVAudioPlayer对象称为播放器作为其属性。我怎样才能用AVAudioPlayerDelegate方法与玩家对象？

当具有这样的代码我得到的错误：

从NSObject的

The type myClass does not conform to the protocol NSObjectProtocol

Answer 1

继承。

class myClass: NSObject, AVAudioPlayerDelegate { 
    var player = AVAudioPlayer() 

    init(){ 
     player.delegate = self 
    } 

    func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) { 
      print("The song ended") 
    } 
}