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copied!<p>Maybe something failed during the server communication, you should check the servers responsecode before reading the content. Add this code after your <code>httpClient.execute(httpPost);</code></p> <pre><code>int httpStatus = httpResponse.getStatusLine().getStatusCode(); switch( httpStatus ) { case HttpStatus.SC_OK: { HttpEntity httpEntity = httpResponse.getEntity(); is = httpEntity.getContent(); // Continue with reading the content here } default: { // here you can print errormessages or information what happened } } </code></pre> <p>The full code for your class could be:</p> <pre><code>public class JSONParser { static InputStream is = null; static JSONObject jObj = null; static String json = ""; // constructor public JSONParser() { } public JSONObject getJSONFromUrl(String url) { try { DefaultHttpClient httpClient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(url); HttpResponse httpResponse = httpClient.execute(httpPost); int httpStatus = httpResponse.getStatusLine().getStatusCode(); switch( httpStatus ) { case HttpStatus.SC_OK: { try { HttpEntity httpEntity = httpResponse.getEntity(); is = httpEntity.getContent(); BufferedReader reader = new BufferedReader(new InputStreamReader( is, "iso-8859-1"), 8); StringBuilder sb = new StringBuilder(); String line = null; while ((line = reader.readLine()) != null) { sb.append(line + "\n"); } is.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()); } } break; } default: { Log.e("JSON Parser", "HttpStatus: "+httpResponse.getStatusLine().getStatusCode() + ", message: " + httpResponse.getStatusLine().getReasonPhrase() ); jObj = null; } } } catch (UnsupportedEncodingException e) { e.printStackTrace(); } catch (ClientProtocolException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return jObj; } } </code></pre> <p>This should help you to see what the server is responding, hope I didn<code>t forget a { in the code ;) The 'default' of the switch is your error section, for every server response except</code>200 OK` you will get a log entry with the server response.</p> <p>If you need more cases (e.g. is you like different messages for <code>403 Forbidden</code> Yust add more <code>case HttpStatus.SC_XXXXX</code> blocks. Check wiki if you need more informations about <a href="http://en.wikipedia.org/wiki/List_of_HTTP_status_codes" rel="nofollow">Http Statuscodes</a></p>

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