Sending SMS on exiting of Midlet

[h_desai_j2me]

Hello Friends,
I want to add utility in which Whenever user tries to Exit (Either from exit command or Pressing END(Red End Button on Phone)), I want to send sms on one Number. So, I tried to Add sms code in destroyApp() function. Here the code is,

public void destroyApp(boolean unconditional) {
       
                try {
                    String s = "sms://0000000000";  // 10 Digit Valid Mobile Number
                    textField = getTextField();
                    textBox_Summary = getTextBox_Summary();
                    String msg = textField.getString().trim() + " " + pid.toString() + " " + textBox_Summary.getString();
                    MessageConnection mc = (MessageConnection) Connector.open(s);

                    System.out.println(mc.toString());
                    TextMessage tm = (TextMessage) mc.newMessage(MessageConnection.TEXT_MESSAGE);
                    tm.setPayloadText(msg);
                    mc.send(tm);
                    notifyDestroyed();
                } catch (Exception e) {
                 e.printStackTrace();
                    //  exitMIDlet();
                }
       
    }

This code is working fine in defaultConfiguration.
But when I try to run in Series 40 6th Edition Emulator or In real Nokia device, its not working.
In Emulator, I am getting this error :

Using Trusted simulated domain
Exception: java/lang/ClassNotFoundException
        at com.sun.midp.io.InternalConnector.openPrim(+135)
        at com.sun.midp.io.InternalConnector.open(+9)
        at javax.microedition.io.Connector.open(+6)
        at javax.microedition.io.Connector.open(+6)
        at javax.microedition.io.Connector.open(+5)
        at pkg.com.log.ONOFFAPP1.destroyApp(+78)
        at javax.microedition.midlet.MIDletProxy.destroyApp(+8)
com.nokia.mid.impl.isa.io.protocol.external.sms.Protocol@d590dbc

Then what should I do that this works? I tried to change Security Option of Nokia Midlet, but that was also not worked.

Thanking You,
Hakoo Desai.

[raj_J2ME]

Are you using some Nokia specific API, if yes then which one?

[h_desai_j2me]

No, I am using purely J2ME APIs.

[prssupe]

AFAIK the problem is occuring because midlet getting destroyed soon before sending SMS,instead of putting code in destroy app ,when user presses exit send sms first and after that ,in the function call destroy app

[raj_J2ME]

Try not exiting the app on Series 40 6th Edition Emulator or In real Nokia device, as I guess the Nokia S40 device will be asking for the confirmation for exting the MIDlet to the user.