Why am I not getting my new messages?

package com.thegreathoudini.kevin.grapevine;

import android.app.AlertDialog;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.support.v4.widget.SwipeRefreshLayout;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.Toast;

import com.parse.FindCallback;
import com.parse.Parse;
import com.parse.ParseException;
import com.parse.ParseFile;
import com.parse.ParseObject;
import com.parse.ParseQuery;
import com.parse.ParseUser;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by Kevin on 5/29/2015.
 */
public class InboxFragment extends ListFragment {

    protected List<ParseObject> mMessages;
    protected SwipeRefreshLayout mSwipeRefreshLayout;


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_inbox, container, false);


        mSwipeRefreshLayout = (SwipeRefreshLayout)rootView.findViewById(R.id.swipeRefreshLayout);
        mSwipeRefreshLayout.setOnRefreshListener(mOnRefreshListner);
        mSwipeRefreshLayout.setColorSchemeResources(R.color.swipeRefresh1, R.color.swipeRefresh2, R.color.swipeRefresh3, R.color.swipeRefresh4);
        return rootView;
    }

    @Override
    public void onResume() {
        super.onResume();


       getActivity().setProgressBarIndeterminateVisibility(true);
        retrieveMessages();
    }

    private void retrieveMessages() {
        ParseQuery<ParseObject> query = new ParseQuery<ParseObject>(ParseConstants.CLASS_MESSAGES);
        query.whereEqualTo(ParseConstants.KEY_RECIPIENTS_IDS , ParseUser.getCurrentUser().getObjectId());
        query.orderByDescending(ParseConstants.KEY_CREATED_AT);
        query.setCachePolicy(ParseQuery.CachePolicy.CACHE_ELSE_NETWORK);
        query.findInBackground(new FindCallback<ParseObject>() {
            @Override
            public void done(List<ParseObject> messages, ParseException e) {

                if(mSwipeRefreshLayout.isRefreshing()){
                    mSwipeRefreshLayout.setRefreshing(false);
                }
                if(e == null){
                    getActivity().setProgressBarIndeterminateVisibility(true);
                    mMessages = messages;
                    int i = 0;
                    String [] usernames = new String[mMessages.size()];

                    for (ParseObject message: mMessages){
                        usernames[i] = message.getString(ParseConstants.KEY_SENDER_NAME);
                        i++;


                    }

                    if(getListView().getAdapter() == null){
                        MessageAdapter adapter = new MessageAdapter(
                                getListView().getContext(), mMessages);
                        setListAdapter(adapter);
                    }
                    else{

                        ((MessageAdapter)getListView().getAdapter()).refill(mMessages);
                    }

                }




            }
        });
    }

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);

        ParseObject message = mMessages.get(position);
        String messageType = message.getString(ParseConstants.KEY_FILE_TYPE);
        String messageComment = message.getString(ParseConstants.KEY_COMMENT_TEXT);
        ParseFile file = message.getParseFile(ParseConstants.KEY_FILE);
        Uri fileUri = Uri.parse(file.getUrl());

        if(messageType.equals(ParseConstants.TYPE_IMAGE)){

            //View image
            Intent intent = new Intent(getActivity(), ViewImageActivity.class);
            intent.setData(fileUri);
            intent.putExtra(ParseConstants.KEY_COMMENT_TEXT,messageComment);
            startActivity(intent);
        }


    }

    protected SwipeRefreshLayout.OnRefreshListener mOnRefreshListner = new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {

            retrieveMessages();
        }
    };

}