设置iOS App 录音从蓝牙设备的麦克风获取
时间: 2023-07-31 19:08:41 浏览: 61
您好!要实现在 iOS App 上录音从蓝牙设备的麦克风获取,您需要进行以下步骤:
1. 在 info.plist 文件中添加蓝牙权限:
- NSBluetoothPeripheralUsageDescription:描述了应用程序需要使用蓝牙的原因。
- NSMicrophoneUsageDescription:描述了应用程序需要使用麦克风的原因。
2. 创建一个 AVAudioSession 实例并设置它的类别为 AVAudioSessionCategoryRecord:
```
let audioSession = AVAudioSession.sharedInstance()
do {
try audioSession.setCategory(AVAudioSessionCategoryRecord)
} catch {
print("Failed to set audio session category.")
}
```
3. 设置 AVAudioSession 实例的输入源和输出源:
```
do {
let bluetoothInputs = audioSession.availableInputs?.filter {
$0.portType == AVAudioSessionPortBluetoothHFP ||
$0.portType == AVAudioSessionPortBluetoothA2DP
}
if let input = bluetoothInputs?.first {
try audioSession.setPreferredInput(input)
}
try audioSession.setPreferredOutput(audioSession.currentRoute.outputs.first!)
} catch {
print("Failed to set audio session input and output.")
}
```
4. 初始化 AVAudioRecorder 对象并开始录音:
```
let audioURL = // Specify the URL where you want to save the recorded audio.
let audioSettings = [AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
AVSampleRateKey: 44100,
AVNumberOfChannelsKey: 2]
do {
let audioRecorder = try AVAudioRecorder(url: audioURL, settings: audioSettings)
audioRecorder.prepareToRecord()
audioRecorder.record()
} catch {
print("Failed to initialize audio recorder.")
}
```
这样就可以从蓝牙设备的麦克风录制音频了。希望对您有所帮助!