[J2ME] Radio Button multipli

[umegg]

Salve ragazzi.
Volevo chiedervi se sapete darmi una mano in questo senso...
ho una MIDLET che deve prelevare informazioni attraverso i radio button quindi con un unica scelta da ogni domanda...
il programma è questo:



import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;

public class Quiz extends MIDlet implements CommandListener{
private Display display;
private Command exit, submit;
private List list;

public Quiz(){
exit = new Command("Exit", Command.EXIT, 1);
submit = new Command("Submit", Command.SCREEN, 2);
list = new List("Sex", List.EXCLUSIVE);
}

public void startApp(){
display = Display.getDisplay(this);
list.append("Male", null);
list.append("Female", null);
list.addCommand(exit);
list.addCommand(submit);
list.setCommandListener(this);
display.setCurrent(list);
}

public void pauseApp(){}

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

public void showMsg(){
Alert alert = new Alert("Select",
list.getString(list.getSelectedIndex()), null, null);

display.setCurrent(alert);
list.removeCommand(submit);
}

public void commandAction(Command c, Displayable Displayable){
String label = c.getLabel();
if (label.equals("Submit")){
showMsg();
} else if (label.equals("Exit")){
destroyApp(false);
}
}
}




Cosa devo fare per poter inserire in unica screen più domande invece di 1 sola?(in qsto esempio viene chiesto il sesso)

[Alex'87]

Il codice si posta tra CODE e /CODE in modo che mantenga l'indentazione, non in grasseto! Così è abbastanza illeggibile

[umegg]

vorrei creare una cosa tipo qsta:



è possibile farlo in 1 midlet sola?

[Taz3]

Ciao,
prova con ChoiceGroup.

[umegg]

io intendo qsto:

QUANTO TI PIACCIONO I FILM ROMANTICI?(da 1 a 5)
1
2
3
4
5

QUANTO TI PIACCIONO I FILM D'AZIONE?(da 1 a 5)
1
2
3
4
5


tt qsto in un unica midlet...si puo fare?ovviamente per ogni domanda una solo risposta.

[Taz3]

Ciao,
penso che ChoiceGroup.EXCLUSIVE faccia al caso tuo.

[umegg]

ok grz...ci provero

[umegg]

allora...sono riuscito a mettere 2 CHOICE GROUP in un unica midlet...posto il codice:

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class quiz2 extends MIDlet implements ItemStateListener, CommandListener
{
  private Display display;      // Reference to display object
  private Form fmMain;          // The main form
  private Form fmMain2;
  private Command cmExit;      // A Command to exit the MIDlet
  private Command cmView;      // View the choice selected
  private ChoiceGroup cgEmail,cgEmail2; // Choice group
  private int replyIndex,replyIndex2;       // Index of "reply" in choice group
  private int choiceGroupIndex,choiceGroupIndex2; // Index of choice group on form


  public quiz2()
  {
    display = Display.getDisplay(this);

    // Create an exclusive (radio) choice group
    cgEmail = new ChoiceGroup("Email Options", Choice.EXCLUSIVE);
    cgEmail2 = new ChoiceGroup("Options", Choice.EXCLUSIVE);


    // Append options, with no associated images
    cgEmail.append("Read", null);
    replyIndex = cgEmail.append("Reply", null);
    cgEmail.append("Forward", null);
    cgEmail.append("Delete", null);

    // Set "reply" as the default/selected option
    cgEmail.setSelectedIndex(replyIndex, true);

    // Append options, with no associated images
    cgEmail2.append("dsasd", null);
    replyIndex2 = cgEmail2.append("sdly", null);
    cgEmail2.append("asd", null);
    cgEmail2.append("Forsdward", null);

    // Set "reply" as the default/selected option
    cgEmail2.setSelectedIndex(replyIndex2, true);


    cmExit = new Command("Exit", Command.EXIT, 1);
    cmView = new Command("View", Command.SCREEN,2);

    // Create Form, add components, listen for events
    fmMain = new Form("");
    choiceGroupIndex = fmMain.append(cgEmail);
    choiceGroupIndex2 = fmMain.append(cgEmail2);
    fmMain.addCommand(cmExit);
    fmMain.addCommand(cmView);
    fmMain.setCommandListener(this);
  }

  // Called by application manager to start the MIDlet.
  public void startApp()
  {
    display.setCurrent(fmMain);
  }

  public void pauseApp()
  { }

  public void destroyApp(boolean unconditional)
  { }

  public void commandAction(Command c, Displayable s)
  {
    if (c == cmView)
    {
      // Build a string showing which option was selected
      /*StringItem stiMessage = new StringItem("You selected: ", cgEmail.getString(cgEmail.getSelectedIndex()));
      StringItem stiMessage2 = new StringItem("You selected: ", cgEmail2.getString(cgEmail2.getSelectedIndex()));
      fmMain.append(stiMessage);
      fmMain.append(stiMessage2);*/

      StringItem stiMessage = new StringItem("You selected: ", cgEmail.getString(cgEmail.getSelectedIndex()));
      fmMain.append(stiMessage);

      
      // Delete the choice group & view button
      fmMain.delete(choiceGroupIndex);
      fmMain.delete(choiceGroupIndex2);
      fmMain.removeCommand(cmView);
    }
    else if (c == cmExit)
    {
      destroyApp(false);
      notifyDestroyed();
    }
  }

  public void itemStateChanged(Item item)
  {
  }
}

ora pero la StringItem stiMessage nn mi restituisce nessun risultato...cm se l'indice non fosse memorizzato...mentre se lo faccio per la seconda CHOICEGROUP mi da il risultato..cosè che nn va?

[Taz3]

Ciao,
prova inserendo questo nel commandAction:

 if (c == cmView)
    {
      StringItem stiMessage = new StringItem("First you selected: ", cgEmail.getString(cgEmail.getSelectedIndex()));
      StringItem stiMessage2 = new StringItem("Second you selected: ", cgEmail2.getString(cgEmail2.getSelectedIndex()));
      fmMain2.append(stiMessage);
      fmMain2.append(stiMessage2);
      display.setCurrent(fmMain2);
    }
    else if (c == cmExit)
    {
      destroyApp(false);
      notifyDestroyed();
    }

[umegg]

ora mi mostra solo la prima scelta...ma nn la seconda...