Trouble posting comments with the LWUIT Facebook API - facebook

Question

I'm working on a mobile project and decided to try out the LWUIT framework for development. So far it has been quite interesting although I wish the documentation was a bit better.
I run into a problem trying to post content to facebook using the recently released Facebook API. I'm able to authenticate without issues. However, when I try to post comments to the user's wall, I get a http 404 error.
Has anyone else had this sort of challenge. Below is an excerpt from my code;
protected boolean onShareScreenPost() {
// If the resource file changes the names of components this call will break notifying you that you should fix the code
//boolean val = super.onShareScreenPost();
Form shareForm = Display.getInstance().getCurrent();
final TextField shareField = findShareField(shareForm);
String postText = shareField.getText();
try {
makeFacebookAuthenticationRequest();
FaceBookAccess.getInstance().postOnWall(me.getId(), postText);
} catch (IOException ex) {
ex.printStackTrace();
//Include a dialog saying unable to post or connect to the internet or whatever
}
return true;
}
private void makeFacebookAuthenticationRequest() throws IOException {
FaceBookAccess.getInstance().authenticate("125527160846284", "http://a.b.c/", new String[]{ "publish_stream"});
me = new User();
FaceBookAccess.getInstance().getUser("me", me, new ActionListener() {
public void actionPerformed(ActionEvent evt) {
System.out.println("returned user");
}
});
}

Answer 1

Seeing this question 24 hours later makes me feel a bit silly.
The answer was quite simple and staring me in the face all along. I needed to wait for the Facebook API to return a User object before making additional calls to the API. Failure to do this resulted in a null reference for my user object and this was being used in the wall post request causing the facebook api to return a http 404.
Hope this helps someone...