Facebook.java

//======================StaratUp.java

import net.rim.device.api.ui.UiApplication;

public class StartUp extends UiApplication
{
	public static void main(String args[])
	{
		StartUp start=new StartUp();
		start.enterEventDispatcher();
	}
	public StartUp()
	{
		pushScreen(new FaceBookScreen());
	}
}

//=====================================FaceBookScreen.java

public final class FaceBookScreen extends MainScreen implements FieldChangeListener
{
	String NEXT_URL = "http://www.facebook.com/connect/login_success.html";
	String APPLICATION_ID = "";
	String APPLICATION_SECRET = "";
	String[] PERMISSIONS = Facebook.Permissions.USER_DATA_PERMISSIONS;
	ButtonField btn;

    public FaceBookScreen()
    {
        setTitle("Loading Screen");
        createGUI();
    }

	private void createGUI()
	{
		btn=new ButtonField("Face Book");
		btn.setChangeListener(this);
		add(btn);
	}
	public void fieldChanged(Field field, int context)
	{
		shareWithFaceBook("This is the Blackberry sample application");
	}
	public void shareWithFaceBook(String COMMON_SHARED_DATA)
	{
		Facebook facebook = null;
		try
		{
			ApplicationSettings sett=new ApplicationSettings(NEXT_URL, APPLICATION_ID, APPLICATION_SECRET, Permissions.ALL_PERMISSIONS);
			facebook=Facebook.getInstance(sett);
			synchronized (UiApplication.getUiApplication().getAppEventLock())
			{
				User user = facebook.getCurrentUser();
				String result = user.publishPost("Check out this details from ABC\n", "http://www.google.com/", "https://www.google.com/intl/en_com/images/srpr/logo3w.png", "Hi,I got the above details from ABC Blackberry app", "http://www.google.com", COMMON_SHARED_DATA, "");
				if ((result != null) && !result.trim().equals(""))
				{
					int k=Dialog.ask(Dialog.D_OK,"Details successfully shared with Facebook");
					if(k==Dialog.D_OK)
					{
						if (Dialog.ask("Please choose:", new String[] { "Exit", "Logout & Exit" }, 0) == 0)
						{
							//nothing;
						}
						else
						{
							facebook.logout(true);
						}
					}
				}
				else
				{
					facebook.logout(true);
				}
			}
		}
		catch (Exception e)
		{

			facebook.logout(true);
		}
	}
}