[android help] data will not populate listview

I'm having issues populating my listview. I thought I had modifed my XML and adapters accordingly but apparently not. When the activity is loaded the dialog pops up stating it's loading then the app force closes. If i remove the 3 lines of coding stating listview.setText(name) then it just loads all the items with the default text in my XML file. My code looks like this:

import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.net.URL;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.ListActivity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.util.JsonReader;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;


public class DisplayServiceActivity extends ListActivity {
    private ListView listOfServices;

    //JSONArrays?
    JSONArray directory;


    //JSON Node names
    private static String TAG_ID = "id";
    private static String TAG_NAME= "name";
    private static String TAG_DIRECTORY = "Categories";
    private final static String url= "API LINK HERE";
    JSONObject json;
    jsonParser jParser = new jsonParser();
    ArrayList> directoryList;

    @SuppressLint("NewApi")
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Request request = new Request();
        request.execute();

        listOfServices =getListView(); //get builtin listView


        directoryList = new ArrayList>();

        ListAdapter adapter = new SimpleAdapter(this,
                directoryList, 
                R.layout.list_item, 
                new String[] { TAG_ID,TAG_NAME }, 
                new int[] { android.R.id.text1,android.R.id.text2 });

        setListAdapter(adapter);
        setContentView(R.layout.service);
        // Make sure we're running on Honeycomb or higher to use ActionBar APIs
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
            // Show the Up button in the action bar.
            getActionBar().setDisplayHomeAsUpEnabled(true);
        }
    }// end of onCreate Method
    @SuppressWarnings("unused")
    public class Request extends AsyncTask {

        private static final int REGISTRATION_TIMEOUT = 3 * 1000;
        private static final int WAIT_TIMEOUT = 30 * 1000;
        private ProgressDialog dialog = 
                new ProgressDialog(DisplayServiceActivity.this);


        protected void onPreExecute() {
            dialog = new ProgressDialog(DisplayServiceActivity.this);
            dialog.setMessage("Getting your info real quick... Please wait...");
            dialog.show();
        }

        protected JSONObject doInBackground(String... params) {

            json = jParser.getJSONfromURL(url);

            return json;

        }

        protected void onPostExecute(JSONObject s) {          
            super.onPostExecute(s);
            String name = null;
            String id = null;
            dialog.dismiss();

            try {
                directory = s.getJSONArray("Categories");
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            for(int i = 0; i< directory.length(); i++){;
            try {
                id = directory.getJSONObject(i).getString(TAG_ID);
                name = directory.getJSONObject(i).getString(TAG_NAME);
            } catch (JSONException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            displayCatList(id, name);

            }

        }

    }

    public void displayCatList(String id, String name){                 
        //create new HashMap
        HashMap map = new HashMap();

        //add each child node to HashMap key
        //map.put(TAG_ID, id);
        map.put(TAG_NAME, name);

        //adding HashList to ArrarList
        directoryList.add(map);



        // set Adapter for ListView here
        ListAdapter adapter = new SimpleAdapter(this,
                directoryList, 
                R.layout.list_item, 
                new String[] { id,name }, 
                new int[] { android.R.id.text1,android.R.id.text2 });


        TextView listName = (TextView) findViewById(R.id.listName);
        Log.e("XML Variable", name);
        listName.setText(name);

        setListAdapter(adapter);

    }



    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            NavUtils.navigateUpFromSameTask(this);
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}

List_item.xml

    android:id="@+id/listName"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:text="rubble rubble rubble"
        android:textColor="#FFFFFF"
        android:padding="10dip"
        android:textSize="20dip"
        android:textStyle="bold" >

LogCat:

05-12 23:47:28.395: I/Adreno200-EGLSUB(4402): : Format RGBA_8888.
05-12 23:47:29.006: E/XML Variable(4402): Glass Repair
05-12 23:47:29.006: W/dalvikvm(4402): threadid=1: thread exiting with uncaught exception (group=0x416bf438)
05-12 23:47:29.006: E/AndroidRuntime(4402): FATAL EXCEPTION: main
05-12 23:47:29.006: E/AndroidRuntime(4402): java.lang.NullPointerException
05-12 23:47:29.006: E/AndroidRuntime(4402):     at com.example.hstnc_activity.DisplayServiceActivity.displayCatList(DisplayServiceActivity.java:158)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at com.example.hstnc_activity.DisplayServiceActivity$Request.onPostExecute(DisplayServiceActivity.java:127)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at com.example.hstnc_activity.DisplayServiceActivity$Request.onPostExecute(DisplayServiceActivity.java:1)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at android.os.AsyncTask.finish(AsyncTask.java:631)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at android.os.AsyncTask.access$600(AsyncTask.java:177)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at android.os.Handler.dispatchMessage(Handler.java:99)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at android.os.Looper.loop(Looper.java:137)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at android.app.ActivityThread.main(ActivityThread.java:4918)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at java.lang.reflect.Method.invokeNative(Native Method)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at java.lang.reflect.Method.invoke(Method.java:511)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771)
05-12 23:47:29.006: E/AndroidRuntime(4402):     at dalvik.system.NativeStart.main(Native Method)

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