how to display fetched json data into listview using baseadapter

Question

I am new to android and java.Recently I am having problem with displaying fetched json data into listview using baseadapter. At first I have used this code

Answer 1

Json parser:

public class jparser {

static InputStream istream = null;
static JSONObject jObj = null;
//static JSONArray jarray=null;
static String json = "";
//static JSONArray jarray = null;

// constructor
public jparser() {
}

public JSONObject getJFromUrl(String url) {
    // Making HTTP request
    //try {
        // defaultHttpClient
         StringBuilder builder = new StringBuilder();

        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);
        /*HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();
        istream = httpEntity.getContent();*/
        try{
        HttpResponse response = httpClient.execute(httpPost);

        StatusLine statusLine = response.getStatusLine();

        int statusCode = statusLine.getStatusCode();

         if (statusCode == 400) 
         {
           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);
           }
         } 
         else
         {
             Log.e("==>", "Failed to download file");
         }
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(istream, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        istream.close();
        json = sb.toString();
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }
    // try parse the string to a JSON object
    try {
        jObj = new JSONObject(json);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }
    // return JSON String
    return jObj;

   // Parse String to JSON object

     /*try {
            jarray = new JSONArray( builder.toString());
        } catch (JSONException e) {
            Log.e("JSON Parser", "Error parsing data " + e.toString());
        }

        // return JSON Object
        return jarray;

    }*/
    }

}