Question

try AVAudioSession.sharedInstance()
                  .setCategory(AVAudioSessionCategoryPlayback,
                               with: AVAudioSessionCategoryOptions(rawValue: UInt(UInt8(AVAudioSessionCategoryOptions.defaultToSpeaker.rawValue)
                                                                                | UInt8(AVAudioSessionCategoryOptions.allowAirPlay.rawValue)
                                                                                | UInt8(AVAudioSessionCategoryOptions.allowBluetooth.rawValue)
                                                                                | UInt8(AVAudioSessionCategoryOptions.allowBluetoothA2DP.rawValue))))

返回错误：

Domain = NSOSStatusErrorDomain Code = -50“（null）”

Answer 1

对于以后发现此问题的任何人来说，这都是解决方案。仅当您将AVAudioSessionCategoryPlayback更改为AVAudioSessionCategoryPlayAndRecord时，它才能在设备上运行：

try AVAudioSession.sharedInstance()
                  .setCategory(AVAudioSessionCategoryPlayAndRecord,
                               with: AVAudioSessionCategoryOptions(rawValue: UInt(UInt8(AVAudioSessionCategoryOptions.defaultToSpeaker.rawValue)
                                                                                | UInt8(AVAudioSessionCategoryOptions.allowAirPlay.rawValue)
                                                                                | UInt8(AVAudioSessionCategoryOptions.allowBluetooth.rawValue)
                                                                                | UInt8(AVAudioSessionCategoryOptions.allowBluetoothA2DP.rawValue))))

“尝试AVAudioSession.sharedInstance（）。setCategory”仅在设备上返回nil

1 个答案: