在我的应用程序中,我想检查已连接到手机的AVAudio portTypes.下面的代码适用于BluetoothA2DP和耳机,但是当我将手机连接到我的汽车免提装置时,它不适用于BluetoothHFP.谁能帮我？！我认为已经通过免提/ AV /蓝牙以及许多其他人的所有SO帖子,但无法解决为什么它没有识别BluetoothHFP输出portType.
import AVFoundation
func startCheckAVConnection() {
// set the AVAudioSession to allow bluetooth. This do/try/catch doesn't seem to make a difference if it is here or not.
do{
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayAndRecord,with: AVAudioSessionCategoryOptions.allowBluetooth)
} catch{
print(error)
}
// Check possible outputs for handsfree
let outputs = AVAudioSession.sharedInstance().currentRoute.outputs
if outputs.count != 0 {
for output in outputs {
if output.portType == AVAudioSessionPortBluetoothA2DP {
peripheralLabel.text = "connected to BluetoothA2DP"
} else if output.portType == AVAudioSessionPortBluetoothHFP { // NOT RECOGNISED
peripheralLabel.text = "connected to BluetoothHFP"
} else if output.portType == AVAudioSessionPortHeadphones {
peripheralLabel.text = "connected to Headphones"
}
}
} else {
peripheralLabel.text = "Please connect handsfree"
}
// Add observer for audioRouteChangeListener
NotificationCenter.default.addObserver(
self,selector: #selector(TopVC.audioRouteChangeListener(_:)),name: NSNotification.Name.AVAudioSessionRouteChange,object: nil)
}
