AVAudioSession and AirPods - ios

Question

It seems that my app is not working with AirPods. Right now I'm using this code for the playback and record:
let audioSession = AVAudioSession.sharedInstance()
do { try audioSession.setCategory(AVAudioSessionCategoryPlayAndRecord, with: AVAudioSessionCategoryOptions.defaultToSpeaker)
}catch {
print("audioSession properties weren't set because of an error.")
}
Will it be enough if I change defaultToSpeaker to allowBluetooth?
P.S. I know it's quite a stupid question because it'd be much simpler to just change this line and check, but I don't have AirPods with me right now, so the only option for me is to upload the new build to Testflight (and I want to do this with minimum iterations).
update: (quite naive approach — but all I need is to use bluetooth headphones if they are available):
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

You need to add support for bluetooth to your options parameter like so:
[AVAudioSessionCategoryOptions.defaultToSpeaker, .allowBluetoothA2DP]
.allowBluetoothA2DP will allow for high quality audio output to the bluetooth device and restrict microphone input on said device, while .allowBluetooth will default HFP compatible (input/output) bluetooth devices to the lower quality HFP, which supports microphone input.

Answer 2

Here is a full source to request proper permission.
All you have to do is to add a mode with '.allowBluetoothA2DP'
I've applied on 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)
}
}