PlaceholderFragment.java

public static class PlaceholderFragment extends Fragment {

        public PlaceholderFragment() {
        }

        @Override
        public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            View rootView = inflater.inflate(R.layout.fragment_main, container, false);
            
            Session.openActiveSession(getActivity(), true, new Session.StatusCallback() {
				
				@Override
				public void call(Session session, SessionState state, Exception exception) {
					// TODO Auto-generated method stub
					if (session.isOpened()) {
						Request.newMeRequest(session, new Request.GraphUserCallback() {
							
							@Override
							public void onCompleted( GraphUser user, Response response) {
								// TODO Auto-generated method stub
								if (user != null) {
									TextView welcome = (TextView) getView().findViewById(R.id.welcome);
									welcome.setText("Hello " + user.getName() + " " + user.getId() + "!");
								}
							}
						}).executeAsync();
					}
				}
			});
            return rootView;
        }
    }