Getting exception when recording sound in J2me

Question

I get an exception when I record audio in Nokia C1. The following is the exception:

Error2: javax.microediting.media.MediaException: MUS 

Can someone help me remove this exception or where am I mistaken?

Below I provide my code in which I get this exception:

 package video; import javax.microedition.midlet.*; import java.io.*; import javax.microedition.lcdui.*; import javax.microedition.media.*; import javax.microedition.media.control.*; public class VoiceRecordMidlet extends MIDlet { private Display display; public void startApp() { display = Display.getDisplay(this); display.setCurrent(new VoiceRecordForm()); } public void pauseApp() { } public void destroyApp(boolean unconditional) { notifyDestroyed(); } } class VoiceRecordForm extends Form implements CommandListener { private StringItem message; private StringItem errormessage; private final Command record, play, end; private Player player; private byte[] recordedAudioArray = null; private RecordControl rc; private ByteArrayOutputStream output; public VoiceRecordForm() { super("Recording Audio"); message = new StringItem("", "Select Record to start recording."); this.append(message); errormessage = new StringItem("", ""); this.append(errormessage); record = new Command("Record", Command.SCREEN, 0); this.addCommand(record); play = new Command("Play", Command.SCREEN, 0); end = new Command("End", Command.SCREEN, 0); this.setCommandListener(this); } public void commandAction(Command comm, Displayable disp) { if (comm == record) { Thread t = new Thread() { public void run() { try { player = Manager.createPlayer("capture://audio"); player.realize(); rc = (RecordControl) player.getControl("RecordControl"); output = new ByteArrayOutputStream(); rc.setRecordStream(output); rc.startRecord(); player.start(); removeCommand(record); addCommand(end); } catch (Exception e) { errormessage.setLabel("Error1"); errormessage.setText(e.toString()); } } }; t.start(); } else if (comm == play) { try { ByteArrayInputStream recordedInputStream = new ByteArrayInputStream(recordedAudioArray); Player p2 = Manager.createPlayer(recordedInputStream, "audio/basic"); **p2.prefetch(); p2.start();** } catch (Exception e) { errormessage.setLabel("Error2"); errormessage.setText(e.toString()); } } else if (comm == end) { try { rc.stopRecord(); removeCommand(end); addCommand(play); rc.commit(); recordedAudioArray = output.toByteArray(); player.close(); } catch (IOException ex) { ex.printStackTrace(); } } } } 

Answer 1

The only difference that I can notice when comparing the recording part of your code with the recording part of one of my projects is that I call player.start () before I call recordControl.startRecord ()

 player = Manager.createPlayer("capture://audio"); player.realize(); player.start(); recordControl = (RecordControl) player.getControl("RecordControl"); bos = new ByteArrayOutputStream(); recordControl.setRecordStream(bos); recordControl.startRecord(); 

This works for me on Sony Ericsson phones.

I don't play the sound, though, so I don’t know if this part of your code is causing a problem.