Hi all,
I want to record the audio from the micphone. But I failed.
I reference the document. And the link is:
http://code.google.com/android/toolbox/apis/media.html
I got the file. Its size is always 1666B. I played it but hear
nothing.
Thanks in advance.
Regards,
Lei
The code is :
public class MediaRecorderDemo extends Activity {
private static final String TAG = "MediaPlayerDemo";
private MediaPlayer mMediaPlayer;
private String path;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mPlay = (Button) findViewById(R.id.play);
mStart = (Button) findViewById(R.id.start);
mStop = (Button) findViewById(R.id.stop);
mPlay.setOnClickListener(mPlayListener);
mStart.setOnClickListener(mStartListener);
mStop.setOnClickListener(mStopListener);
}
@Override
protected void onDestroy() {
super.onDestroy();
// TODO Auto-generated method stub
if (mMediaPlayer != null) {
mMediaPlayer.release();
mMediaPlayer = null;
}
}
private OnClickListener mStopListener = new OnClickListener() {
public void onClick(View v) {
recorder.stop();
recorder.release();
}
};
private OnClickListener mPlayListener = new OnClickListener() {
public void onClick(View v) {
try {
path = "/sdcard/audio4";
if (path == "") {
// Tell the user to provide an audio file URL.
Toast
.makeText(
MediaRecorderDemo.this,
"Please edit MediaPlayer_Audio
Activity, "
+ "and set the path
variable to your audio file path."
+ " Your audio file
must be stored on sdcard.",
Toast.LENGTH_LONG).show();
}
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setDataSource(path);
mMediaPlayer.prepare();
mMediaPlayer.start();
} catch (Exception e) {
Log.e(TAG, "error: " + e.getMessage(), e);
}
}
};
private OnClickListener mStartListener = new OnClickListener() {
public void onClick(View v) {
String path = "/sdcard/audio4";
//ContentResolver contentResolver;
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat
(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(path);
recorder.prepare();
recorder.start();
}
};
private Button mPlay;
private Button mStop;
private Button mStart;
private MediaRecorder recorder = new MediaRecorder();
}
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