Help on List/Sublist menu....
Hi guys,
Need your help with the code below...I am trying to modify the code below that would appear like this:
Language-> English or Chinese -->display to console
SMS->Options>display to console
Call->Options-->display to console
in the commented portion below when I try to use switch (((List)d).getSelectedIndex()) {
case 0:
setEnglish();
break;
case 1:
setChinese();
break;
}
it always go to setEnglish() method....Please help me with this cause I am
still new in java and j2me..
Thanks in advance,
Psyeu
/*
* %W% %E%
*
* Copyright (c) 2000-2004 Sun Microsystems, Inc. All rights reserved.
* PROPRIETARY/CONFIDENTIAL
* Use is subject to license terms
*/
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import java.lang.*;
/**
* The MIDlet demonstrates the different types of list supported by MIDP-2.0:
*EXCLUSIVE - a choice having exactly one element selected at time.
*IMPLICIT - a choice in which the currently focused element is
*selected when a Command is initiated.
*MULTIPLE - a choice that can have arbitrary number of elements
*selected at a time.
*
* @version 2.0
*/
public class ListDemo
extends MIDlet
implements CommandListener {
private final static Command CMD_EXIT =
new Command("Exit", Command.EXIT, 1);
private final static Command CMD_BACK =
new Command("Back", Command.BACK, 1);
private Display display;
private List mainList;
private List languageList;
private List smsList;
private List callList;
Locale locale = new Locale();
String location = System.getProperty( "microedition.locale" ) ;
// private boolean langSel=false;
private boolean firstTime;
public ListDemo() {
display = Display.getDisplay(this);
// these are the strings for the choices.
//String[] stringArray = {
//"English",
//"Chinese",
//
//};
// the string elements will have no images
Image[] imageArray = null;
/*
* create samples of the supported types:
*"Exclusive", "Implicit" and "Multiple"
*/
String [] strArray={"English","Chinese"};
languageList = new List("Language Options", Choice.IMPLICIT, strArray,
imageArray);
languageList.addCommand(CMD_BACK);
languageList.addCommand(CMD_EXIT);
languageList.setCommandListener(this);
String [] strSMS = {"Friends","Family"};
smsList = new List("SMS", Choice.IMPLICIT, strSMS, imageArray);
smsList.addCommand(CMD_BACK);
smsList.addCommand(CMD_EXIT);
smsList.setCommandListener(this);
String [] strCont = {"Add","Edit","Delete"};
callList = new List("Call", Choice.IMPLICIT, strCont,
imageArray);
callList.addCommand(CMD_BACK);
callList.addCommand(CMD_EXIT);
callList.setCommandListener(this);
firstTime = true;
}
protected void startApp() {
if (firstTime) {
// these are the images and strings for the choices.
Image[] imageArray = null;
try {
// load the duke image to place in the image array
Image icon = Image.createImage("/midp/uidemo/Icon.png");
// these are the images and strings for the choices.
imageArray = new Image[] {
icon,
icon,
icon
};
} catch (java.io.IOException err) {
// ignore the image loading failure the application can recover.
}
String[] stringArray = {
"Language Options",
"SMS",
"Call"
};
mainList = new List("Language Demo", Choice.IMPLICIT, stringArray,
imageArray);
mainList.addCommand(CMD_EXIT);
mainList.setCommandListener(this);
display.setCurrent(mainList);
firstTime = false;
}
}
protected void destroyApp(boolean unconditional) {
}
protected void pauseApp() {
}
public void commandAction(Command c, Displayable d) {
if (d.equals(mainList)) {
// in the main list
if (c == List.SELECT_COMMAND) {
if (d.equals(mainList)) {
switch (((List)d).getSelectedIndex()) {
case 0:
display.setCurrent(languageList);
System.out.println("Language");
//choose between English and Chinese List
// //if English is selected go to method setEnglish();
//if Chinese is selected go to method setChinese();
break;
case 1:
display.setCurrent(smsList);
System.out.println("SMS");
break;
case 2:
display.setCurrent(callList);
System.out.println("Call");
break;
}
}
}
}else {
// in one of the sub-lists
if (c == CMD_BACK) {
display.setCurrent(mainList);
}
}
if (c == CMD_EXIT) {
destroyApp(false);
notifyDestroyed();
}
}
private void setChinese() {
// TODO Auto-generated method stub
System.out.println("Chinese");
}
private void setEnglish() {
// TODO Auto-generated method stub
System.out.println("English");
}
}
