android 蓝牙 mic,android - How to record audio via bluetooth mic - Stack Overflow

I am trying to record audio via bluetooth headset mic, but I can able to hear only the audio, but not able to record audio via bluetooth mic instead of I can record voice from mobile mic.

I am using below code

IntentFilter newintent = new IntentFilter();

newintent.addAction(AudioManager.ACTION_SCO_AUDIO_STATE_UPDATED);

mContext.registerReceiver(mSCOHeadsetAudioState, newintent);

AudioManager mAudioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);

mAudioManager.setBluetoothScoOn(true);

mAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);

mAudioManager.startBluetoothSco();

private final BroadcastReceiver mSCOHeadsetAudioState = new BroadcastReceiver() {

public void onReceive(Context context, Intent intent) {

int state = intent.getIntExtra(AudioManager.EXTRA_SCO_AUDIO_STATE, -1);

if (state == AudioManager.SCO_AUDIO_STATE_CONNECTED) {

DisplayToast("BT Recording is Ready");

onRecord();

} else if (state == AudioManager.SCO_AUDIO_STATE_DISCONNECTED) {

DisplayToast("BT Recording Disabled");

}

}

};

public void onRecord(){

String mFilename = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getAbsolutePath();

String mBTFileName = mFilename + "/BTRecord.3gp";

final RecordThread BT = new RecordThread(false,mBTFileName);

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);

// set title

alertDialogBuilder.setTitle("Alert");

// set dialog message

alertDialogBuilder

.setMessage("Recording...")

.setCancelable(false)

.setNeutralButton("Stop",new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,int id) {

// if this button is clicked, stop recording

BT.stopRecording();

mAudioManager.stopBluetoothSco();

// To do: start separation and play back here

dialog.dismiss();

}

});

try{

BT.prepareRecording();

}catch(Exception e){

Toast.makeText(this, "Recording prepare failed", Toast.LENGTH_SHORT).show();

BT.stopRecording();

this.finish();

}

try{

mAudioManager.stopBluetoothSco();

BT.start(); //Try to minimize delay here some how...

}catch(Exception e){

Toast.makeText(this, "Recording failed", Toast.LENGTH_SHORT).show();

Log.e(LOG_TAG, "Record failed");

BT.stopRecording();

mAudioManager.stopBluetoothSco();

this.finish();

}

// create alert dialog

alertDialog = alertDialogBuilder.create();

// show it

alertDialog.show();

}

final class RecordThread extends Thread implements Runnable{

public String mFile;

protected boolean isBT;

private Camera access;

private MediaRecorder mRecorder;

private static final String LOG_TAG = "Recording thread";

public RecordThread(boolean isBT, String file){

this.isBT = isBT;

this.mFile = file;

}

@Override

public void run() throws RuntimeException{

try{

this.mRecorder.start();

}catch(Exception e){

Log.e(LOG_TAG,"Run Method Exception");

RuntimeException re = new RuntimeException();

throw re;

}

}

public void prepareRecording() throws Exception{

this.mRecorder = new MediaRecorder();

this.mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);

this.mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);

this.mRecorder.setOutputFile(mFile);

this.mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);

try {

this.mRecorder.prepare();

} catch (IOException e) {

Log.e(LOG_TAG, "prepare() failed");

if(access != null){

access.release();

}

throw e;

}

}

public void stopRecording() {

if(access != null){

access.release();

}

try{

mRecorder.stop();

mRecorder.release();

mRecorder = null;

}catch(Exception e){

mRecorder = null;

}

}

}