Android连接蓝牙录制pcm数据的示例代码

以下是Android连接蓝牙录制PCM数据的示例代码：

public class BluetoothRecorder {

    private static final String TAG = "BluetoothRecorder";

    private BluetoothAdapter mBluetoothAdapter;
    private BluetoothSocket mBluetoothSocket;
    private InputStream mInputStream;
    private OutputStream mOutputStream;
    private AudioRecord mAudioRecord;
    private boolean mIsRecording;
    private Thread mRecordingThread;
    private byte[] mBuffer;

    public BluetoothRecorder() {
        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
        mBuffer = new byte[1024];
    }

    public boolean connectToBluetoothDevice(String address) {
        BluetoothDevice device = mBluetoothAdapter.getRemoteDevice(address);
        try {
            mBluetoothSocket = device.createRfcommSocketToServiceRecord(UUID.fromString("00001101-0000-1000-8000-00805F9B34FB"));
            mBluetoothSocket.connect();
            mInputStream = mBluetoothSocket.getInputStream();
            mOutputStream = mBluetoothSocket.getOutputStream();
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }

    public void startRecording() {
        mAudioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, 16000, AudioFormat.CHANNEL_IN_MONO, AudioFormat.ENCODING_PCM_16BIT, mBuffer.length);
        mAudioRecord.startRecording();
        mIsRecording = true;
        mRecordingThread = new Thread(new Runnable() {
            @Override
            public void run() {
                while (mIsRecording) {
                    int size = mAudioRecord.read(mBuffer, 0, mBuffer.length);
                    if (size > 0) {
                        try {
                            mOutputStream.write(mBuffer, 0, size);
                        } catch (IOException e) {
                            e.printStackTrace();
                        }
                    }
                }
            }
        });
        mRecordingThread.start();
    }

    public void stopRecording() {
        mIsRecording = false;
        try {
            mRecordingThread.join();
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        mAudioRecord.stop();
        mAudioRecord.release();
        mAudioRecord = null;
        try {
            mInputStream.close();
            mOutputStream.close();
            mBluetoothSocket.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

此代码使用AudioRecord录制PCM数据，并将其写入BluetoothSocket的OutputStream。在连接到蓝牙设备后，可以调用startRecording()方法开始录制，调用stopRecording()方法停止录制并关闭BluetoothSocket