ItemCommandListener is not invoked on selection of MessageItem

[carox kaur]

I am using de.enough.polish.ui.MessageItem class in my application. I want to trap the event on selection of this item. In my application, I have many instances of MessageItems (like a list) appended to the form and I want to show an Alert (along with the text of the MessageItem) when user selects a MessageItem. What I am doing is:

    
Class A implements ItemCommandListener{
Public void start(){
            Display display=Display.getDisplay(); 
            Form form=new Form(“Inbox of Mail Application”);
            MessageItem msg=new MessageItem(“hello”, My name is ABC”);
            Msg.setItemCommandListener(this);
            Form.append(msg);
            Display.setCurrent(form);
}
public void commandAction(Command cmd, Item arg1) {         //ItemCommandListener
 
           Alert alert=new Alert("Hello ItemCommandListener is invoked");
            display.setCurrent(alert);
      }
}

The above code is just the overview of what I am doing. I am trying to capture the event by using javax.microedition.lcdui.ItemCommandListener but the event is not been trapped. By using CommandListener, although I am able to show the Alert but I am not able to get the reference of the MessageItem which is selected by the user.
Can anyone help me in event handling on MessageItem. I will be really thankful.

[Gopinath Karyadath]

Hi Friend

your trying display your form . so please try this instead of

((( Msg.setItemCommandListener(this); ))


Form.setItemCommandListener(this);

Regards
[email protected]

[carox kaur]

Registration of ItemCommandListener is applicable on Items (MessageItem) and not to the form. Form class do not have method "setItemCommandListener()".
Below is the complete code which is no working. I have no idea why on clicking the MessageItem, Alert is not been shown.

  package mail;

import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Item;
import javax.microedition.lcdui.ItemCommandListener;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

import de.enough.polish.ui.Form;
import de.enough.polish.ui.MessageItem;

public class Inbox extends MIDlet implements ItemCommandListener {
	Display display;
	Form form;
	Command Select,exit;
	protected void startApp() throws MIDletStateChangeException {
		display = Display.getDisplay(this);
		
		form=new Form("One Screen App");
				
		MessageItem msg=new MessageItem("Hi!...First Line....","This is the second line");
		msg.setItemCommandListener(this);
		form.append(msg);
		MessageItem msg1=new MessageItem("Hi!...Firstttttt Line....","Thisssss is the second line");
		msg1.setItemCommandListener(this);
		form.append(msg1);
		//msg.notifyStateChanged();
		Select=new Command("Select",Command.SCREEN, 10);
		exit=new Command("Exit",Command.SCREEN, 10);

		form.addCommand(Select);
		form.addCommand(exit);
		//form.setItemCommandListener(this);
		display.setCurrent(form);
	}

	public void commandAction(Command cmd, Item item) {
		Alert alert=new Alert("Hi the alert is been invoked"+cmd.getLabel()+"  "+item.toString());
		display.setCurrent(alert);
	}
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {
		this.notifyDestroyed();
	}

	protected void pauseApp() {
	}

}
  

[Gopinath Karyadath]

hi

include this lines and try

msg.setDefaultCommand(Select) ;
msg1.setDefaultCommand(Select) ;

Regards
Gopinath
[email protected]