Java Development

[Sulist]

I'm making an application that can receive sms with the code below: 

package mypackage;

import java.io.IOException;

import javax.microedition.io.Connector;
import javax.wireless.messaging.MessageConnection;
import javax.wireless.messaging.MessageListener;
import javax.wireless.messaging.TextMessage;
import net.rim.device.api.system.ApplicationManager;
import net.rim.device.api.system.ApplicationManagerException;
import net.rim.device.api.system.PersistentObject;
import net.rim.device.api.system.PersistentStore;
import net.rim.device.api.ui.component.Dialog;
import net.rim.device.api.ui.component.EditField;
import net.rim.device.api.ui.container.MainScreen;

/**
 * A class extending the MainScreen class, which provides default standard
 * behavior for BlackBerry GUI applications.
 */
public final class MyScreen extends MainScreen implements MessageListener
{
    MessageConnection sambung ;
    EditField isi ;
    /**
     * Creates a new MyScreen object
     */
    public MyScreen( )
    {        
        // Set the displayed title of the screen       
        setTitle("MyTitle");
        isi = new EditField("","");
        add(isi);
        try {
            this.sambung = (MessageConnection)Connector.open("sms://");
            this.sambung.setMessageListener(this);
        }
        catch (Exception e)
        {
            System.out.println("Exception: " + e);
        }
    }
    public void notifyIncomingMessage(final MessageConnection sambung) {
        new Thread ()
        {
            MessageConnection conn;
            Thread set (MessageConnection conn){
            this.conn =conn ;
            return this;
            }
            public void run (){
                try {
                    TextMessage pesan = (TextMessage)conn.receive();
                    String perintah = pesan.getPayloadText();
                    isi.setText(perintah);
                }catch (IOException e) {
                    System.out.println("ExceptionMessage :"+e);
                } catch (ApplicationManagerException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }.set(sambung).start();
    }
}

But when I try the application on the device is actually on editfield can not display a currently received sms. Can someone can give me a correction to the source code .

[peter_strange]

I presume you are seeing an IllegalStateException, on this line:

                   isi.setText(perintah);
 

in which case replace this line with something like:

UiAPplication.getUiApplication().invokeLater(new Runnable() {

public void run() {

isi.setText(perintah);

}

});

You might have to create sdome "final" references to get this to compile. 

If this is not the problem you are seeing, can you please describe what happens exactly?

[Sulist]

Thanks for your respond sir , my application consists of a editfieldand if an incoming sms content will appear in the editfield  and I've tried your suggestion but no effect

[peter_strange]

So when debugging and stepping through the code, what exactly happens?