我想录制蓝牙耳机的音频 . 我搜索这个，我在这个网站上找到了相关信息 . 例如; How to record sound using bluetooth headset Android MediaRecorder to AudioTrack, Recording and Playback Text-To-Speech over bluetooth
public class MainActivity extends Activity {
private MediaRecorder myRecorder;
private MediaPlayer myPlayer;
private String outputFile = null;
private Button startBtn;
private Button stopBtn;
private Button playBtn;
private Button stopPlayBtn;
private TextView text;
private AudioManager amanager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
amanager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
text = (TextView) findViewById(R.id.text1);
// store it to sd card
outputFile = Environment.getExternalStorageDirectory().
getAbsolutePath() + "/javacodegeeksRecording.3gpp";
myRecorder = new MediaRecorder();
myRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
myRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
myRecorder.setAudioEncoder(MediaRecorder.OutputFormat.AMR_NB);
myRecorder.setOutputFile(outputFile);
startBtn = (Button)findViewById(R.id.start);
startBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
start(v);
}
});
stopBtn = (Button)findViewById(R.id.stop);
stopBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
stop(v);
}
});
playBtn = (Button)findViewById(R.id.play);
playBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
play(v);
}
});
stopPlayBtn = (Button)findViewById(R.id.stopPlay);
stopPlayBtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
stopPlay(v);
}
});
}
public void start(View view){
try {
amanager.setMode(AudioManager.MODE_IN_CALL);
amanager.startBluetoothSco();
myRecorder.prepare();
myRecorder.start();
} catch (IllegalStateException e) {
// start:it is called before prepare()
// prepare: it is called after start() or before setOutputFormat()
e.printStackTrace();
} catch (IOException e) {
// prepare() fails
e.printStackTrace();
}
text.setText("Recording Point: Recording");
startBtn.setEnabled(false);
stopBtn.setEnabled(true);
Toast.makeText(getApplicationContext(), "Start recording...",
Toast.LENGTH_SHORT).show();
}
public void stop(View view){
try {
myRecorder.stop();
myRecorder.release();
myRecorder = null;
stopBtn.setEnabled(false);
playBtn.setEnabled(true);
text.setText("Recording Point: Stop recording");
Toast.makeText(getApplicationContext(), "Stop recording...",
Toast.LENGTH_SHORT).show();
} catch (IllegalStateException e) {
// it is called before start()
e.printStackTrace();
} catch (RuntimeException e) {
// no valid audio/video data has been received
e.printStackTrace();
}
}
public void play(View view) {
try{
myPlayer = new MediaPlayer();
myPlayer.setDataSource(outputFile);
myPlayer.prepare();
myPlayer.start();
playBtn.setEnabled(false);
stopPlayBtn.setEnabled(true);
text.setText("Recording Point: Playing");
Toast.makeText(getApplicationContext(), "Start play the recording...",
Toast.LENGTH_SHORT).show();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public void stopPlay(View view) {
try {
if (myPlayer != null) {
myPlayer.stop();
myPlayer.release();
myPlayer = null;
playBtn.setEnabled(true);
stopPlayBtn.setEnabled(false);
text.setText("Recording Point: Stop playing");
Toast.makeText(getApplicationContext(), "Stop playing the recording...",
Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
但程序使用内置麦克风 . 我该如何使用蓝牙耳机音频？
谢谢 .
2 回答
根据android引用AudioManager.startBluetoothSco()使用startBluetoothSco（）启动音频连接，并使用setSpeakerphoneOn（false）停止android设备扬声器 . 首先通过蓝牙将手机连接到设备 . 这是一个例子 .
现在根据要求启动，停止和播放音频 .
Click here to get the full source code.
要从蓝牙录制，您必须在录制开始时将默认手机麦克风更改为耳机麦克风，这可以通过BluetoothSCO（）完成 .
For full class goto this link