AVAudioSession和AirPods

Question

我的应用程序似乎不适用于AirPods。现在，我正在使用这段代码来播放和录制：

    let audioSession = AVAudioSession.sharedInstance()
    do { try audioSession.setCategory(AVAudioSessionCategoryPlayAndRecord, with: AVAudioSessionCategoryOptions.defaultToSpeaker)
    }catch {
        print("audioSession properties weren't set because of an error.")
    }

如果我把defaultToSpeaker改为allowBluetooth就足够了吗？

我知道这是个很愚蠢的问题，因为只要更改这一行并检查就会简单得多，但我现在没有AirPods，所以我唯一的选择是将新构建上传到Testflight (我想用最少的迭代来完成这个任务)。

更新：(非常天真的方法--但如果有蓝牙耳机，我只需要使用它们)：

func selectDevice(audioSession: AVAudioSession) {

    var headphonesExist = false
    var bluetoothExist = false
    var speakerExist = false

    let currentRoute = AVAudioSession.sharedInstance().currentRoute

    for output in audioSession.currentRoute.outputs {
        print(output)

        if output.portType == AVAudioSessionPortHeadphones || output.portType == AVAudioSessionPortHeadsetMic {
            headphonesExist = true
        }

        if output.portType == AVAudioSessionPortBluetoothA2DP || output.portType == AVAudioSessionPortBluetoothHFP {
            bluetoothExist = true
        }

        if output.portType == AVAudioSessionPortBuiltInSpeaker {
            speakerExist = true
        }
    }

    if bluetoothExist == true {
        do { try audioSession.setCategory(AVAudioSessionCategoryPlayAndRecord, with: AVAudioSessionCategoryOptions.allowBluetooth) } catch {
            print("error with audiosession: bluetooth")
        }
    }
}

Answer 1

您需要在options参数中添加对蓝牙的支持，如下所示：

[AVAudioSessionCategoryOptions.defaultToSpeaker, .allowBluetoothA2DP]

.allowBluetoothA2DP将允许向蓝牙设备提供高质量的音频输出，并限制所述设备上的麦克风输入，而.allowBluetooth将默认HFP兼容(输入/输出)蓝牙设备为支持麦克风输入的低质量HFP。

Answer 2

以下是请求适当许可的完整来源。您所要做的就是添加一个带有“.allowBluetoothA2DP”的模式

我申请了Swift 5

func requestPermissionForAudioRecording(){
    recordingSession = AVAudioSession.sharedInstance()
    
    do {
      // only with this without options, will not capable with your Airpod, the Bluetooth device.
      //  try recordingSession.setCategory(.playAndRecord, mode: .default)
      try recordingSession.setCategory(.playAndRecord, mode: .default, options: [.defaultToSpeaker, .allowAirPlay, .allowBluetoothA2DP])
      try recordingSession.setActive(true)
      recordingSession.requestRecordPermission() { allowed in
        DispatchQueue.main.async {
          if allowed {
            // Recording permission has been allowed
            self.recordingPermissionGranted = true
          } else {
            // failed to record!
          }
        }
      }
    } catch let err {
      // failed to record!
      print("AudioSession couldn't be set!", err)
    }
  }