Hi,
I've written a little program (see below) to record audio using
MediaRecorder. While everything works fine in the emulator (SDK1r2),
the program does not work on the real phone (HTC G1). On the phone,
after pressing the start button, the audio file is created, but no
content is written to it (i.e. the file size remains 0). Also, no
exception is shown in logcat, and no AudioStreamInGeneric events are
generated (such events are generated when running the program on the
emulator).
Is there maybe a setting on the phone that I have to turn on (or off)?
Or am I missing something else?
I've set the permission to record audio in the android-manifest.xml
file using
<uses-permission android:name="android.permission.RECORD_AUDIO"></uses-
permission>
Thanks for any help!
Michael
------------------------------
My program code:
package ch.ethz.dcg.mictest;
import android.app.Activity;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
public class MicTest extends Activity {
private final static String TAG = MicTest.class.getSimpleName();
private MediaRecorder recorder;
private Button button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
recorder = new MediaRecorder();
button = (Button)findViewById(R.id.button);
button.setText("start");
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
buttonClicked();
}
});
}
private void buttonClicked() {
if (button.getText().equals("start")) {
try {
recorder = new MediaRecorder();
String path = "/sdcard/test.3gpp";
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(path);
recorder.prepare();
recorder.start();
button.setText("stop");
} catch (Exception e) {
Log.w(TAG, e);
}
} else {
try {
recorder.stop();
recorder.release(); // Now the object cannot be
reused
button.setEnabled(false);
} catch (Exception e) {
Log.w(TAG, e);
}
}
}
}
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