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  1. #1
    Registered User
    Join Date
    May 2010
    Posts
    2

    linked choicegroup not working!!

    hey guys,

    i have made a simple mobile form using sun java toolkit.

    My problem is that in my form i need to have linked choicegroups or to be more specific when i select something from first choicegroup then a sub choicegroup appears on the form.

    I searched the forum and i came to know that i have to use itemstatelistener for this problem. i have used but it doesn't seem to work. i know i'm committing a terrible mistake so if u guys can please look into the coding.

    CODING:



    public class mobileApp1 extends MIDlet implements CommandListener,ItemStateListener {
    private Display display;
    private TextField chassisNo,number,cname,add1, add2,tehsil,cusmobile,cuslandline,trancode,chassisn;
    public Form form;
    private Command submit,cancel,check;
    private DateField datein;
    private Date date;
    private ChoiceGroup ch,sizeChoice,chd;
    private static final int DATE= 0;
    String datetostring;
    MessageConnection clientConn;

    private Alert chasalert,datalert,dcodalert,cnamalert,addalert,tehalert,mobalert,mobialert,tranalert,trancalert;

    String[] arr = {"ANDHRA PRADESH", "ASSAM", "BIHAR", "CHATTISGARH", "GUJARAT", "HARYANA", "HIMACHAL PRADESH", "JAMMU & KASHMIR", "JHARKHAND", "KARNATAKA", "KERALA", "MADHYA PRADESH", "MAHARASHTRA", "ORISSA", "PUNJAB", "RAJASTHAN", "TAMIL NADU", "UTTAR PRADESH", "UTTARANCHAL", "WEST BENGAL" };

    String[] arr1 = {"ADILABAD", "ANANTPUR","BHAGALPUR", "BASTAR", "BHIWANI", "CHITTOR", "CHAPRA", "CHAMBA", "DIBRUGARH", "DARBHANGA", "DANTEWADA", "FARIDABAD", "FATEHABAD", "GANGANAGAR", "GHAZIABAD", "GORAKHPUR", "HYDERABAD URBAN", "HAJIPUR", "HISSAR", "JALANDHAR", "JAIPUR", "MUMBAI", "MOGA", "MUKTSAR", "MADURAI", "MATHURA", "NAGPUR", "NORTH 24 PARGANAS", "PATNA", "PANCHKULA", "PANIPAT", "PATIALA", "ROPAR", "SANGRUR"};

    public mobileApp1() {
    form = new Form("Mobile Form");
    chassisNo = new TextField("Chassis No:", "", 15, TextField.ANY);
    chassisn = new TextField("Chassis No:", "", 15, TextField.ANY);
    number = new TextField("Dealer Code", "", 4, TextField.NUMERIC);
    cname = new TextField("Customer Name:","", 30, TextField.ANY);
    add1 = new TextField("Address1:", "", 100, TextField.ANY);
    add2 = new TextField("Address2:", "", 100, TextField.ANY);
    date = new Date();
    datein = new DateField("Installation Date:", DateField.DATE, TimeZone.getTimeZone("GMT"));
    tehsil = new TextField("Tehsil:", "", 100, TextField.ANY);
    cusmobile = new TextField("Customer Mobile NO.:", "", 11, TextField.NUMERIC);
    cuslandline = new TextField("Customer Jandline No.:", "", 11, TextField.NUMERIC);
    trancode = new TextField("Transaction Code.:", "", 6, TextField.ANY);
    cancel = new Command("Cancel",Command.CANCEL,2);
    submit = new Command("Submit",Command.OK, 2);
    check = new Command("Check",Command.OK, 2);
    datein.setDate(date);
    datetostring = date.toString();


    }

    public void startApp() throws MIDletStateChangeException{
    display = Display.getDisplay(this);
    form.append(chassisNo);
    form.append(datein);
    form.append(number);
    form.append(cname);
    form.append(add1);
    form.append(add2);
    ChoiceGroup[] ch ={ new ChoiceGroup("Select State:",ChoiceGroup.POPUP,arr,null) };
    for (int iter = 0; iter < ch.length; iter++) {
    form.append(ch[iter]);
    }
    ChoiceGroup[] chd ={ new ChoiceGroup("Select DISTRICT:",ChoiceGroup.POPUP,arr1,null) };
    for (int iter = 0; iter < chd.length; iter++) {
    form.append(chd[iter]);
    }
    sizeChoice = new ChoiceGroup("Order:", Choice.POPUP);
    sizeChoice.append("Small", null);
    sizeChoice.append("Medium",null);
    sizeChoice.append("Large", null);



    form.append(tehsil);
    form.append(cusmobile);
    form.append(cuslandline);
    form.append(trancode);
    form.addCommand(submit);
    form.addCommand(cancel);
    form.addCommand(check);
    form.setCommandListener(this);
    form.setItemStateListener(this);
    display.setCurrent(form);
    }

    public void pauseApp() {}

    public void destroyApp(boolean unconditional) {
    notifyDestroyed();
    }

    public void itemStateChanged(Item item) {
    if(item == ch) {
    if (ch.getSelectedIndex() == 1) {


    form.append(sizeChoice);

    }
    }
    }


    public void showMsg() {
    Thread t = new Thread(){
    public void run(){


    String n = chassisNo.getString();
    String dcode = number.getString();
    String cusname = cname.getString();
    String addr1 = add1.getString();
    String addr2 = add2.getString();
    String teh = tehsil.getString();
    String cusm = cusmobile.getString();
    String cusl = cuslandline.getString();
    String tranc = trancode.getString();

    String str13 = "AA ";
    str13 = (str13 = str13 + n + ";" + dcode + ";" + datetostring + ";" +cusname + ";" + addr1 + ";" + addr2 + ";" + teh + ";" + cusm + ";" + cusl + ";" + tranc).toUpperCase();

    try {
    clientConn=(MessageConnection)Connector.open("sms://5550000:1234");
    }
    catch(Exception e) {
    Alert conalert = new Alert("Alert");
    conalert.setString("Unable to connect to Station because of network problem");
    conalert.setTimeout(2000);
    display.setCurrent(conalert);
    }
    try {
    TextMessage textmessage = (TextMessage) clientConn.newMessage(MessageConnection.TEXT_MESSAGE);
    textmessage.setAddress("sms://+5550000:1234");
    textmessage.setPayloadText(str13);
    clientConn.send(textmessage);
    }
    catch(Exception e)
    {
    Alert messalert=new Alert("Alert","",null,AlertType.INFO);
    messalert.setTimeout(1000);
    messalert.setString("Unable to send");
    display.setCurrent(messalert);
    }
    }
    };
    t.start();

    }

    public void commandAction(Command c, Displayable d) {
    String label=c.getLabel();
    if(c == cancel) {
    destroyApp(true);
    } else if(c == check) {
    if (trancode.getString().length() < 6)
    { (trancalert = new Alert("Error", "Please enter 6 digit long transaction code.", null, AlertType.INFO)).setTimeout(1000);
    display.setCurrent(trancalert,form);
    }

    }
    else if(c == submit) {
    showMsg();
    }

    }
    }

  2. #2
    Registered User
    Join Date
    May 2010
    Posts
    2

    Re: linked choicegroup not working!!

    I'm new to this this forum thing...sorry if i have posted whole coding!!

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