Ios MPRemoteCommandCenter导致音频播放两次

我正在使用AVPlayer播放音频。我在viewDidLoad上设置遥控器

let commandCenter = MPRemoteCommandCenter.shared()
        
        commandCenter.pauseCommand.isEnabled = true
        commandCenter.playCommand.isEnabled = true
        commandCenter.stopCommand.isEnabled = true
        commandCenter.togglePlayPauseCommand.isEnabled = true
        commandCenter.nextTrackCommand.isEnabled = true
        commandCenter.previousTrackCommand.isEnabled = true
        
        if #available(iOS 13, *){
            // Add handler for Play Command
            commandCenter.playCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in
                if self.isReadyToPlay, let player = self.audioPlayer, player.timeControlStatus != .playing  {
                    self.playCC()
                    return .success
                }
                return .commandFailed
            }
            
            // Add handler for Pause Command
            commandCenter.pauseCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in
                if self.isReadyToPlay, let player = self.audioPlayer, player.timeControlStatus == .playing  {
                    self.pauseCC()
                    return .success
                }
                return .commandFailed
            }
            
            
            commandCenter.stopCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in
                self.pauseCC()
                return MPRemoteCommandHandlerStatus.success
            }
            
            commandCenter.togglePlayPauseCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in
                self.playPauseCC()
                return MPRemoteCommandHandlerStatus.success
            }
            
            commandCenter.nextTrackCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in
                self.nextCC()
                return MPRemoteCommandHandlerStatus.success
            }
            
            commandCenter.previousTrackCommand.addTarget { (event) -> MPRemoteCommandHandlerStatus in
                self.prevCC()
                return MPRemoteCommandHandlerStatus.success
            }
            
        } else {
            commandCenter.pauseCommand.addTarget(self, action: #selector(self.pauseCC))
            commandCenter.playCommand.addTarget(self, action: #selector(self.playCC))
            commandCenter.stopCommand.addTarget(self, action: #selector(self.pauseCC))
            commandCenter.togglePlayPauseCommand.addTarget(self, action: #selector(self.playPauseCC))
            commandCenter.nextTrackCommand.addTarget(self, action: #selector(self.nextCC))
            commandCenter.previousTrackCommand.addTarget(self, action: #selector(self.prevCC))
        }

我打电话给你，你会消失的

 let commandCenter = MPRemoteCommandCenter.shared()
    commandCenter.playCommand.removeTarget(self)
    commandCenter.pauseCommand.removeTarget(self)
    commandCenter.previousTrackCommand.removeTarget(self)
    commandCenter.nextTrackCommand.removeTarget(self)
   
    if #available(iOS 9.1, *) {
        commandCenter.changePlaybackPositionCommand.removeTarget(self)
    }

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不幸的是，有时我从遥控器播放音频（应用程序在后台），音频播放两次。我做错了什么？

如果你找到我真正想知道的事情，我也有同样的问题。谢谢你找到原因了吗？我也有同样的问题