Control Menu traversal ..

Question

Hi all,
I have been using NXP JCOP environment along with Gemalto Developer Suite (for Mobile Simulator) to develop and test my applications. I have been facing a very odd problem which i not able to solve.
My problem is related to Menu traversal, ie When my menu structure appears on the phone, (Root Menu) i select a particular menu item say "App Dev". Then it list me few items,now i select "GetInp", then do a GetInput to accept the input say "123" , i press ok. Now instead of going back to the list under AppDev . it goes back to the root menu where the "RootMenu" is listed under SIM menu.
So my application looks very odd for any menu operation as i have to start from root again selecting every thing. I tried various PDU setting in Menu, List, Display Text , Get Input but failed. Now i am stuck. :-(
My Menu construction is as this (not complete code)
import javacard.framework.Applet;
import javacard.framework.ISO7816;
import javacard.framework.ISOException;
import javacard.framework.APDU;
import javacard.framework.Util;
public class menuSelect extends Applet {
     private static final byte PROACTIVE_CMD_SET_UP_MENU = (byte) 0x25;
     private static final byte PROACTIVE_CMD_SELECT_ITEM = (byte) 0x24;
     private static final byte PROACTIVE_CMD_GET_INPUT = (byte) 0x23;
     private static final byte MENU_SELECT = (byte) 0x44;
     private static final byte STKMENU_NUMBER = (byte) 0x0B;
// MENU CONSTRUCTION */
     private static final byte[] PROACTIVE_SETUP_MENU = {
          (byte) 0x81, CMD_DTL_LENGTH, CMD_NUMBER, PROACTIVE_CMD_SET_UP_MENU, (byte) 0x00,
          (byte) 0x82, (byte) 0x02, DEVICEID_SIM, DEVICEID_ME,
          (byte) 0x85, (byte) 0x08, 'R', 'o', 'o', 't','M', 'e', 'n', 'u',
          (byte) 0x8F, (byte) 0x09, STKMENU_NUMBER, 'A', 'p', 'p', 's', ' ', 'D', 'e', 'v',
          (byte) 0x18, (byte) 0x01, (byte) 0x24,
// SELECTION ITEMS
     private static final byte[] PROACTIVE_SELECT_ITEM = {
          (byte) 0x81, CMD_DTL_LENGTH, CMD_NUMBER, PROACTIVE_CMD_SELECT_ITEM, (byte) 0x00,
          (byte) 0x82, (byte) 0x02, DEVICEID_SIM, DEVICEID_ME,
          (byte) 0x05, (byte) 0x08, 'A', 'p', 'p', 's', ' ', 'D', 'e', 'v',
          (byte) 0x8F, (byte) 0x09, 1, 'D', 'i', 's', 'p', 'T', 'e', 'x', 't',
          (byte) 0x8F, (byte) 0x07, 2, 'G', 'e', 't', 'I', 'n', 'p',
          (byte) 0x8F, (byte) 0x09, 3, 'S', 'e', 'n', 'd', ' ','S','M','S',
          (byte) 0x8F, (byte) 0x0C, 4, 'S', 'e', 't', 'u', 'p',' ',' ','C','a','l','l',
          (byte) 0x8F, (byte) 0x05, 5, 'E', 'x', 'i', 't',
     public static void install(byte[] bArray, short bOffset, byte bLength) {
          // GP-compliant JavaCard applet registration
          new menuSelect().register(bArray,
                    (short) (bOffset + 1), bArray[bOffset]);
     public void process(APDU apdu) {
          if (selectingApplet()) {
               return;
          logAPDU.LogIncoming(apdu);
          switch (buf[ISO7816.OFFSET_CLA]) {
               insVal = buf[ISO7816.OFFSET_INS];
               switch (insVal) {
               case INS_TERMINAL_RESPONSE:
                    byte cmdType = buf[ISO7816.OFFSET_CDATA+3];
               case INS_FETCH:
                    fetchcode = 0;
                    switch (fetchcmd) {
                    case PROACTIVE_CMD_SET_UP_MENU:
                         buf[0] = (byte) 0xD0; buf[1] = (byte) PROACTIVE_SETUP_MENU.length;
                         Util.arrayCopy(PROACTIVE_SETUP_MENU, (short) 0, buf, (short) 2, buf[1]);
                         apdu.setOutgoingAndSend((short) 0, (short) (buf[1] + 2)); // Add 2 to payload length to account for header: 0xD0 & length byte
                         //shouldFetch((byte) PROACTIVE_SELECT_ITEM.length);
                         fetchcode = 0;
                         break;
                    case PROACTIVE_CMD_SELECT_ITEM:
                         switch (choosenMenuItem) {
                         case STKMENU_NUMBER:
                              buf[0] = (byte) 0xD0; buf[1] = (byte) PROACTIVE_SELECT_ITEM.length;
                              Util.arrayCopy(PROACTIVE_SELECT_ITEM, (short) 0, buf, (short) 2, (short) PROACTIVE_SELECT_ITEM.length);
                              apdu.setOutgoingAndSend((short) 0, (short) (PROACTIVE_SELECT_ITEM.length + 2));
                              //shouldFetch((byte) PROACTIVE_SELECT_ITEM.length);
                              break;
                         case 1 :
                              buf[0] = (byte) 0xD0; buf[1] = (byte) (DISPLAY_TEXT1.length);
                              Util.arrayCopy(DISPLAY_TEXT1, (short) 0, buf, (short) 2, (short) (buf[1]));
                              apdu.setOutgoingAndSend((short) 0, (short) (buf[1] + 2)); // Add 2 to payload length to account for header: 0xD0 & length byte
                              choosenMenuItem = STKMENU_NUMBER;
                         break;
                    break;
          } // Case default
          } // Switch
If any one can help me it would be really helpful...
Prakash

Answer 1

There's no method to access the controlmenu through java.
But, if you have little knowledge of c++, you can use jni for that purpose. You have to obtain the windowhandle and then you can toggle the controlmenu.
It's not that hard. I've followed that way in order to get the java's jframe minimized to the system tray...