Debugging Error

package com.teamtreehouse.ribbit;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.util.ArrayList;
import java.util.HashMap;

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.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.app.AlertDialog;
import android.content.Context;
import android.content.Intent;
import android.graphics.drawable.Drawable;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.ListFragment;
import android.text.Html;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;

public class NewsFragment extends ListFragment{

    public static final int NUMBER_OF_POSTS = 10;
    public static final String TAG = NewsFragment.class.getSimpleName();
    protected JSONObject mBlogData;
    protected ProgressBar mProgressBar;

    private final String KEY_TITLE = "title";
    private final String KEY_DATE = "date";
    private final String KEY_THUMBNAIL = "thumbnail";

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_news_list,
                container, false);
        mProgressBar = (ProgressBar) rootView.findViewById(R.id.progressBar1);

        if(NetworkIsAvailable())    {
            mProgressBar.setVisibility(View.VISIBLE);
            GetBlogPostsTask getBlogPostsTask = new GetBlogPostsTask();
            getBlogPostsTask.execute();
        }
        else {
            Toast.makeText(getActivity(), "Network is unavailable!", Toast.LENGTH_LONG).show();
        }

        //String message = getString(R.string.no_items);
        //Toast.makeText(this, message, Toast.LENGTH_LONG).show();

        return rootView;
    }


    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        super.onListItemClick(l, v, position, id);
        try {
        JSONArray jsonPosts = mBlogData.getJSONArray("posts");
        JSONObject jsonPost = jsonPosts.getJSONObject(position);
        String blogUrl = jsonPost.getString("url");

        Intent intent = new Intent(getActivity(),BlogWebViewActivity.class);
        intent.setData(Uri.parse(blogUrl));
        startActivity(intent);
    }
        catch (JSONException e) {
            logException(e);
        }
    }

    private void logException(Exception e) {
        Log.e(TAG, "Exception caught!", e);
    }

    private boolean NetworkIsAvailable() {
        ConnectivityManager manager = (ConnectivityManager) 
        getActivity().getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = manager.getActiveNetworkInfo();

        boolean isAvailable = false;
        if(networkInfo != null && networkInfo.isConnected()) {
            isAvailable = true;
        }
        return isAvailable;
    }

    public void handleBlogResponse() {
        mProgressBar.setVisibility(View.INVISIBLE);
        if (mBlogData == null) {
            updateDisplayForError();
        }
        else { 
            try {
                JSONArray jsonPosts = mBlogData.getJSONArray("posts");
                ArrayList<HashMap<String, String>> blogPosts = new ArrayList<HashMap<String, String>>();
                for (int i = 0; i < jsonPosts.length(); i++) {
                    JSONObject post = jsonPosts.getJSONObject(i);
                    String title = post.getString(KEY_TITLE);
                    title = Html.fromHtml(title).toString();
                    String date = post.getString(KEY_DATE);
                    date = Html.fromHtml(date).toString();
                    String thumbnail = post.getString(KEY_THUMBNAIL);
                    thumbnail = Html.fromHtml(thumbnail).toString();

                    HashMap<String, String> blogPost = new HashMap<String, String>();
                    blogPost.put(KEY_TITLE, title);
                    blogPost.put(KEY_DATE, date);
                    blogPost.put(KEY_THUMBNAIL, thumbnail);

                    blogPosts.add(blogPost);
                }
                String[] keys = { KEY_TITLE, KEY_DATE, KEY_THUMBNAIL };
                int[] ids = { android.R.id.text1, android.R.id.text2 };
                SimpleAdapter adapter = new SimpleAdapter(getActivity(), blogPosts, android.R.layout.simple_list_item_2, keys, ids);
                setListAdapter(adapter);
            } catch (JSONException e) {
                logException(e);
            }
        }

    }


    private void updateDisplayForError() {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());   
        builder.setTitle(getString(R.string.error_title));
        builder.setMessage(getString(R.string.error_message));
        builder.setPositiveButton(android.R.string.ok, null);
        AlertDialog dialog = builder.create();
        dialog.show();

        TextView emptyTextView = (TextView) getListView().getEmptyView();
        emptyTextView.setText(getString(R.string.no_items));
    }

    private class GetBlogPostsTask extends AsyncTask<Object, Void, JSONObject> {

        @Override
        protected JSONObject doInBackground(Object... params) {
            int responseCode = -1;
            JSONObject jsonResponse = null;
            StringBuilder builder = new StringBuilder();
            HttpClient client = new DefaultHttpClient();
            HttpGet httpget = new HttpGet("http://www.ilovelimerick.ie/?json=1&count=10");

            try {
                HttpResponse response = client.execute(httpget);
                StatusLine statusLine = response.getStatusLine();
                responseCode = statusLine.getStatusCode();

                if (responseCode == HttpURLConnection.HTTP_OK) {
                    HttpEntity entity = response.getEntity();
                    InputStream content = entity.getContent();
                    BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                    String line;
                    while((line = reader.readLine()) != null){
                        builder.append(line);
                    }

                    jsonResponse = new JSONObject(builder.toString());
                }
                else {
                    Log.i(TAG, String.format("Unsuccessful HTTP response code: %d", responseCode));
                }
            }
            catch (JSONException e) {
                logException(e);
            }
            catch (Exception e) {
                logException(e);
            }           

            return jsonResponse;
        }   

        @Override
        protected void onPostExecute(JSONObject result) {
            mBlogData = result;
            handleBlogResponse();
        }

    }
}