Here is the code sample for reading a audio file from mobile file system and plays. Here i have used JSR 75 for FileConnection and player class for playing the audio.
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;
import javax.microedition.lcdui.*;
import javax.microedition.io.*;
import javax.microedition.io.file.*;
import javax.microedition.media.*;
public class MyFileConnection extends MIDlet implements CommandListener {
private Display display;
private Command Exit;
private Form f;
public MyFileConnection() {
// TODO Auto-generated constructor stub
f = new Form("Fileconnection Sample");
Exit = new Command("Exit", Command.EXIT, 0);
f.addCommand(Exit);
f.setCommandListener(this);
}
protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
// TODO Auto-generated method stub
}
protected void pauseApp() {
// TODO Auto-generated method stub
}
protected void startApp() throws MIDletStateChangeException {
// TODO Auto-generated method stub
display = Display.getDisplay(this);
// f.append(System.getProperty("microedition.io.file.FileConnection.version"));
String s = System
.getProperty("microedition.io.file.FileConnection.version");
String roots="";
if (s != null) {
// Template to list all the available File systems.
Enumeration en = FileSystemRegistry.listRoots();
StringBuffer sf = new StringBuffer();
while (en.hasMoreElements()) {
roots = (String) en.nextElement();
sf.append("file directory " + roots);
sf.append("\n");
}
f.append(sf.toString());
display.setCurrent(f);
} else {
s = "No file system supported";
f.append(s);
display.setCurrent(f);
}
// //////////////////////////////////////////////////
FileConnection fcon = null;
String content = null;
try {
fcon = (FileConnection)Connector.open("file:///C:/Attachments/test.mp3",Connector.READ_WRITE);
if (!fcon.exists())
throw new Exception("File does not exist");
// fcon.create();
//OutputStream os=fcon.openOutputStream();
//String s="Hi Ranjan";
//byte[] b=s.getBytes();
//os.write(b);
//os.close();
//b=null;
InputStream is = fcon.openInputStream();
Player player = Manager.createPlayer(is, "audio/mpeg");
if (player != null) {
player.start();
}
} catch (Exception e) {
Alert alert = new Alert("Error", "this is"+e.toString(), null, AlertType.ERROR);
alert.setTimeout(Alert.FOREVER);
display.setCurrent(alert);
}
//f.append("Content is" + content);
//display.setCurrent(f);
}
public void commandAction(Command c, Displayable d) {
if (c == Exit) {
try {
destroyApp(false);
notifyDestroyed();
} catch (Exception e) {
}
}
}
}
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