ios - 如何在一类中使用audioPlayerDidFinishPlaying

Player1运行良好，但我在实现Player2时出错。
我应该如何更改音频播放器IDfinishplaying以使其工作？
这是my ViewController.swift的代码：

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


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

最佳答案

在audioPlayerdidFinishPlaying(_:successfully:)中，有一个else if-子句永远不会变成true：

} else if (player === player3) {

player3将始终是nil，因为您从未为其分配任何内容因此，audioPlayerdidFinishPlaying(_:successfully:)中的第三个分支将永远不会被执行。要在当前的类设计中实现此功能，您需要：
更改else if子句
分配给player3

关于ios - 如何在一类中使用audioPlayerDidFinishPlaying，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/42212595/