android widget error with this

I am trying to create my own android widget. I want it to contain a listview that gets data from an async task from an online database.

So far I have my res/xml.stat_widget.xml

<?xml version="1.0" encoding="utf-8"?>
<appwidget-provider
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:minWidth="220dp"
    android:minHeight="72dp"
    android:updatePeriodMillis="86400000"
    android:initialLayout="@layout/widget_stat_view">
</appwidget-provider>

and the layout widget_stat_view:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >


    <TextView
        android:id="@+id/statisticsTitle"
        android:gravity="center"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:ems="10"
        android:text="Your Statistics"
        android:textSize="20sp"
        android:textStyle = "bold"
        android:padding="5dip"
        >
    </TextView>

    <View
        android:layout_width="1dp"
        android:layout_height="30dp">
    </View>

    <ListView
        android:id="@+id/yourStats"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:dividerHeight="0px"
        android:divider="@null"

        >
    </ListView>



</LinearLayout>

I am trying to code the widget provider now which calls the async task. I modeled my async task after the async tasks I use in my normal app activities. It is not set up yet to change data in the widget but I am having problems calling it from my provider:

package com.example.beerportfoliopro;

import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.util.Log;
import android.widget.RemoteViews;

import com.beerportfolio.beerportfoliopro.R;

/**
 * Created by Mike on 9/12/13.
 */
public class StatWidgetProvider extends AppWidgetProvider {
    @Override
    public void onUpdate(Context context, AppWidgetManager appWidgetManager,
                         int[] appWidgetIds) {

        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
        String userName = prefs.getString("userName", null);
        String userID = prefs.getString("userID", null);
        String url = "myURL";



        new GetJSONStatWidget(this).execute(url);



    }
    public static void updateWidgetContent(Context context,
                                           AppWidgetManager appWidgetManager) {

        RemoteViews remoteView = new RemoteViews(context.getPackageName(),
                R.layout.widget_stat_view);
        remoteView.setTextViewText(R.id.title, strLatestTitle);
        Intent launchAppIntent = new Intent(context, TutListActivity.class);
        PendingIntent launchAppPendingIntent = PendingIntent.getActivity(context,
                0, launchAppIntent, PendingIntent.FLAG_UPDATE_CURRENT);
        remoteView.setOnClickPendingIntent(R.id.full_widget, launchAppPendingIntent);
        ComponentName tutListWidget = new ComponentName(context,
                TutWidgetProvider.class);
        appWidgetManager.updateAppWidget(tutListWidget, remoteView);
    }
}

My first error I get on this line in the above code:

SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);

The error is:

getDefaultSharedPreferences
                (android.content.Context)
        in PreferenceManager cannot be applied
                to
        (com.example.beerportfoliopro.StatWidgetProvider)

I also get an error with this on this line:

new GetJSONStatWidget(this).execute(url);
     

My async task code is this:

package com.example.beerportfoliopro;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.Inflater;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.preference.PreferenceManager;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.TextView;
import android.widget.Toast;
import com.beerportfolio.beerportfoliopro.R;

public class GetJSONStatWidget extends AsyncTask
        <String, Void, String> {

    Context c;
    String b;

    public GetJSONStatWidget(Context context)
    {
        c = context;
    }

    @Override
    protected String doInBackground(String... arg0) {
        // TODO Auto-generated method stub
        return readJSONFeed(arg0[0]);
    }

    protected void onPostExecute(String result){

        //decode json here
        try{

            JSONObject json = new JSONObject(result);

            String beerCount = json.getString("beerCount");
            String breweryCount = json.getString("breweryCount");
            String styleCount = json.getString("styleCount");
            String highABV = json.getString("highABV");
            String highIBU = json.getString("highIBU");


            //todo: everything below is for the listview

            //make array list for stats
            final List<BasicStat> basicStatList = new ArrayList<BasicStat>();

            //create object
            BasicStat stat1 = new BasicStat("Beer Count: ", beerCount);
            basicStatList.add(stat1);

            BasicStat stat2 = new BasicStat("Brewery Count: ", breweryCount);
            basicStatList.add(stat2);

            BasicStat stat3 = new BasicStat("Style Count: ", styleCount);
            basicStatList.add(stat3);

            BasicStat stat4 = new BasicStat("High ABV: ", highABV);
            basicStatList.add(stat4);

            BasicStat stat5 = new BasicStat("High IBU: ", highIBU);
            basicStatList.add(stat5);

            //acces listview
            ListView lv = (ListView) ((Activity) c).findViewById(R.id.yourStats);

            //add items to listview
            StatInfoAdapter adapter1 = new StatInfoAdapter(c ,R.layout.stat_list_item, basicStatList);
            lv.setAdapter(adapter1);




        }
        catch(Exception e){

        }

    }





    public String readJSONFeed(String URL) {
        StringBuilder stringBuilder = new StringBuilder();
        HttpClient httpClient = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(URL);
        try {
            HttpResponse response = httpClient.execute(httpGet);
            StatusLine statusLine = response.getStatusLine();
            int statusCode = statusLine.getStatusCode();
            if (statusCode == 200) {
                HttpEntity entity = response.getEntity();
                InputStream inputStream = entity.getContent();
                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(inputStream));
                String line;
                while ((line = reader.readLine()) != null) {
                    stringBuilder.append(line);
                }
                inputStream.close();
            } else {
                Log.d("JSON", "Failed to download file");
            }
        } catch (Exception e) {
            Log.d("readJSONFeed", e.getLocalizedMessage());
        }
        return stringBuilder.toString();
    }




}