How to get JSON Object form url in android

String response = null;

DefaultHttpClient httpClient = new DefaultHttpClient();

ResponseHandler <String> resonseHandler = new BasicResponseHandler();

HttpPost postMethod = new HttpPost("your url");

try

{

JSONObject json = new JSONObject();

       json.put("Fiedl1”,value1);

       json.put("Fiedl2",value2);

                              

       postMethod.setEntity(new ByteArrayEntity(json.toString().getBytes("UTF8")));

       postMethod.setHeader( "Content-Type", "application/json" );

       response = httpClient.execute(postMethod,resonseHandler);

}

catch(Exception e)

{      e.printStackTrace();

}