ListItemLink won't open

//protected String[] mBlogPostTitles;
public static final int NUMBER_OF_POSTS = 32;
public static final String TAG = MainListActivity.class.getSimpleName();
protected JSONObject mBlogData; 
protected ProgressBar mProgressBar;
private final String KEY_TITLE = "title";
private final String KEY_AUTHOR = "author";
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main_list);
    mProgressBar = (ProgressBar)findViewById(R.id.progressBar1);
    if(isNetworkAvailable()){
         mProgressBar.setVisibility(View.VISIBLE);
         GetBlogPostsTask getBlogPostsTask = new GetBlogPostsTask();
         getBlogPostsTask.execute();
    }
    else{
        Toast.makeText(this, "Network is unavailable!", Toast.LENGTH_LONG).show();
    }

    /*Posts the array elements in the strings.xml onto the list*/
    //Resources resources = getResources();
    //mBlogPostTitles = resources.getStringArray(R.array.android_names);
    //ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mBlogPostTitles);
    //setListAdapter(adapter);
    //Toast.makeText(this, getString(R.string.no_items), Toast.LENGTH_LONG).show();

}

protected void OnListItemClick(ListView l, View v, int position, long id){
    super.onListItemClick(l, v, position, id);
    JSONArray jsonPosts;
    try {
        jsonPosts = mBlogData.getJSONArray("posts");
        JSONObject jsonPost = jsonPosts.getJSONObject(position);
        String blogUrl = jsonPost.getString("url");
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(Uri.parse(blogUrl));
        startActivity(intent);
    } catch (JSONException e) {
        logException(e);
    }
}

private void logException(JSONException e) {
    Log.e(TAG, "Exception caught!:", e);
}
private boolean isNetworkAvailable() {
    ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = manager.getActiveNetworkInfo();
    boolean isAvailable = false;
    if(networkInfo != null && networkInfo.isConnected()){
        isAvailable = true;
    }
    return isAvailable;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
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>>();
            //mBlogPostTitles = new String[jsonPosts.length()];
            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 author = post.getString(KEY_AUTHOR);
                author = Html.fromHtml(author).toString();
                HashMap<String, String> blogPost = new HashMap<String, String>();
                blogPost.put(KEY_TITLE, title);
                blogPost.put(KEY_AUTHOR, author);
                blogPosts.add(blogPost);
                //mBlogPostTitles[i] = title;
            }
            String[] keys = { KEY_TITLE, KEY_AUTHOR };
            int[] ids = { android.R.id.text1, android.R.id.text2  };
            SimpleAdapter adapter = new SimpleAdapter(this, blogPosts, android.R.layout.simple_expandable_list_item_2, keys, ids);
            //ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mBlogPostTitles);
            setListAdapter(adapter);
        } catch (JSONException e) {
            // TODO Auto-generated catch block
            logException(e);
        }
    }
}


private void updateDisplayForError() {
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    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));
}
//First parameter is the types passed into the GetBlogPost Tasks
//Second parameter is the type of progress units if we don't care put Void
//Third parameter is the return type of the GetBlogPostTask
private class GetBlogPostsTask extends AsyncTask<Object, Void, JSONObject>{

    //Runs in another thread that's not the main thread.
    //Objects... means that we can put 0 or more arguments into it. 
    @Override
    protected JSONObject doInBackground(Object... params) {
        int responseCode = -1;
        JSONObject jsonResponse = null;
        try {
            URL blogFeedUrl = new URL("http://blog.teamtreehouse.com/api/get_recent_summary/?count=" + NUMBER_OF_POSTS);
            HttpURLConnection connection = (HttpURLConnection)blogFeedUrl.openConnection();
            connection.connect();
            responseCode = connection.getResponseCode();
            if(responseCode == HttpURLConnection.HTTP_OK){
                InputStream inputStream = connection.getInputStream();
                Reader reader = new InputStreamReader(inputStream);
                int contentLength = connection.getContentLength();
                char[] charArray = new char[contentLength];
                reader.read(charArray);
                String responseData = new String(charArray);
                jsonResponse = new JSONObject(responseData);

    //on post execute runs on the main thread
    @Override
    protected void onPostExecute(JSONObject result){
        mBlogData = result;
        handleBlogResponse();
    }

}