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How to use ChoiceGroup in J2ME |
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This j2ME tips illustrates method of using a ChoiceGroup in mobile
applications. ChoiceGroup is a group of selectable elements intended
to be placed within a Form.
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class ChoiceGroupDemo extends MIDlet implements CommandListener {
private boolean boolMotion=false;
Display mDisplay;
Form frm;
ChoiceGroup cg;
Command cmd;
ChoiceGroupDemo() {
frm=new Form("Choice Group Demo");
cg=new ChoiceGroup("Choose Movie:",Choice.MULTIPLE);
cmd=new Command("OK",Command.OK,1);
cg.append("Horror",null);
cg.append("Comedy",null);
cg.append("Action",null);
frm.append(cg);
frm.setCommandListener(this);
}
public void commandAction(Command c, Displayable d) {
for(int i=0;i<3;i++) {
if(cg.isSelected(i)) {
System.out.println("u selected :" +
cg.getString(elementNum));
return;
}
}
}
public void startApp() {
mDisplay = Display.getDisplay(this);
mDisplay.setCurrent(frm);
}
public void pauseApp() {}
public void destroyApp(boolean unconditional){}
}
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