Parsing Data Returned in JSON Format

public class MainListActivity extends ListActivity {

    protected String[] mBlogPostTitles;
    public static final int NUMBER_OF_POSTS = 20;
    public static final String TAG = MainListActivity.class.getSimpleName();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_list);

        if (isNetworkAvailable()) {
            GetBlogPostsTask getBlogPostsTask = new GetBlogPostsTask();
            getBlogPostsTask.execute();
        }
        else{
            Toast.makeText(this, "Network is unavailable", Toast.LENGTH_LONG).show();
        }
        //Toast.makeText(this, getString(R.string.no_item), Toast.LENGTH_LONG).show();
    }

    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 onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main_list, menu);
        return true;
    }

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

        @Override
        protected String doInBackground(Object... arg0) {
            int responseCode = -1;
            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);

                    JSONObject jsonResponse = new JSONObject(responseData);
                    String status = jsonResponse.getString("status");
                    Log.v(TAG,status);

                    JSONArray jsonPosts = jsonResponse.getJSONArray("posts");
                    for(int i = 0; i < jsonPosts.length(); i++){
                        JSONObject jsonPost = jsonPosts.getJSONObject(i);
                        String title = jsonPost.getString("title");
                        Log.v(TAG, "Post" + i +":" + title);
                    }
                        }
                else{
                    Log.i(TAG,"UnsuccessfulCode: " + responseCode);
                }

            }
            catch(MalformedURLException e){
                Log.e(TAG, "Exception Caught:",e);
            }
            catch (IOException e) {
                Log.e(TAG, "Exception Caught:",e);
            }
            catch (Exception e){
                Log.e(TAG, "Exception Caught:",e);
            }
            return "Code: " + responseCode;
        }


    }
}