@Override protected String doInBackground(List<Upload>... arg0) { // TODO Auto-generated method stub UserFunction user = new UserFunction(); String str = null; upload = arg0[0]; for (Upload up : upload) { try { JSONObject jobj = user.userUpload( up, android.text.format.DateFormat.format( "yyyy-MM-dd hh:mm:ss", new java.util.Date()), alert.getDeviceID(home.this)); str = jobj.getString("success"); } catch (Exception e) { // TODO: handle exception str = null; e.printStackTrace(); break; } finally { /*if(str!= null && up!=null) db.deleteUpload(up);*/ } } return str; }