Criando um List de CheckBox
Veja nesta dica J2ME como criar um List contendo váris CheckBox.
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class ListCheckBox extends MIDlet implements CommandListener
{
private Display display;
private Command exit;
private Command submit;
private List list;
public ListCheckBox()
{
display = Display.getDisplay(this);
list = new List("Select Media", List.MULTIPLE);
list.append("Books", null);
list.append("Movies", null);
list.append("Television", null);
list.append("Radio", null);
exit = new Command("Exit", Command.EXIT, 1);
submit = new Command("Submit", Command.SCREEN,2);
list.addCommand(exit);
list.addCommand(submit);
list.setCommandListener(this);
}
public void startApp()
{
display.setCurrent(list);
}
public void pauseApp()
{
}
public void destroyApp(boolean unconditional)
{
}
public void commandAction(Command command, Displayable Displayable)
{
if (command == submit)
{
boolean choice[] = new boolean[list.size()];
StringBuffer message = new StringBuffer();
list.getSelectedFlags(choice);
for (int x = 0; x < choice.length; x++)
{
if (choice[x])
{
message.append(list.getString(x));
message.append(" ");
}
}
Alert alert = new Alert("Choice", message.toString(),
null, null);
alert.setTimeout(Alert.FOREVER);
alert.setType(AlertType.INFO);
display.setCurrent(alert);
list.removeCommand(submit);
}
else if (command == exit)
{
destroyApp(false);
notifyDestroyed();
}
}
}
