Android : Database returns zero after getting the data in arraylist

this is my function which returns the arraylist of objects which are in database:-

public ArrayList<StoreInfo> get_not_synced() 
{ 
not_synced_objects.clear();
String a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16,a17,a18,a19,a20,a21;
  Cursor cur=db.rawQuery("select * from store_info ",null);

  if (cur.getCount() >0) 
  {
  cur.moveToFirst();
   do 
  {

   a21=cur.getString(cur.getColumnIndex("store_type"));

   if(a21.equals("old store"))
   {
   a1=cur.getString(cur.getColumnIndex("store_id"));
   }
   else

   {
   a1=cur.getString(cur.getColumnIndex("_id"));
   }

   a2=cur.getString(cur.getColumnIndex("name"));
   a3=cur.getString(cur.getColumnIndex("address"));
   a4=cur.getString(cur.getColumnIndex("landmark"));
   a5=cur.getString(cur.getColumnIndex("pincode"));
   a6=cur.getString(cur.getColumnIndex("city"));
   a7=cur.getString(cur.getColumnIndex("state")); 
   a8=cur.getString(cur.getColumnIndex("phone_nos"));
   a9=cur.getString(cur.getColumnIndex("sell_flipkart"));
   a10=cur.getString(cur.getColumnIndex("sell_snapdeal"));
   a11=cur.getString(cur.getColumnIndex("owner"));
   a12=cur.getString(cur.getColumnIndex("days"));
   a13=cur.getString(cur.getColumnIndex("timings"));
   a14=cur.getString(cur.getColumnIndex("contact_person"));
   a15=cur.getString(cur.getColumnIndex("brands"));
   a16=cur.getString(cur.getColumnIndex("categories"));
   a17=cur.getString(cur.getColumnIndex("latitude"));
   a18=cur.getString(cur.getColumnIndex("longitude"));
   a19=cur.getString(cur.getColumnIndex("store_type")); 
   a20=cur.getString(cur.getColumnIndex("locality")); 
   a21=cur.getString(cur.getColumnIndex("id_value")); 

   not_synced_objects.add(new StoreInfo(a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,
           a11,a12,a13,a14,a15,a16,a17,a18,a19,a20,a21));
    }
 while (cur.moveToNext());
cur.close();
}
return not_synced_objects;}

now i am receiving this arraylist in an intent service and sending this to my server using this code:-

for(int i=0;i<10;i++)
{
if(cc.isConnectingToInternet())
{
send_data(store_info.get(i));
}}

my send_data function is :-

   public void send_data(StoreInfo sinfo)
   {
      String json_subct="",status="",id;
     JSONObject json_object,json_object1, json_object2; 
    HttpParams httpParameters = new BasicHttpParams();
    HttpConnectionParams.setConnectionTimeout(httpParameters,10000);
    HttpConnectionParams.setSoTimeout(httpParameters, 10000);
    HttpClient httpclient = new DefaultHttpClient(httpParameters);
    HttpPost httppost = new HttpPost(
            "http://hannah.reviews42.co/api/stores/create/");
    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
            18);
    nameValuePairs.add(new BasicNameValuePair("appversion","1.4"));
    nameValuePairs.add(new BasicNameValuePair("name",sinfo.getName()));
    nameValuePairs.add(new BasicNameValuePair("address",sinfo.getAddress()));
    nameValuePairs.add(new BasicNameValuePair("landmark",sinfo.getLandark()));
    nameValuePairs.add(new BasicNameValuePair("pincode",sinfo.getPincode()));
    nameValuePairs.add(new BasicNameValuePair("city",sinfo.getCity()));
    nameValuePairs.add(new BasicNameValuePair("state",sinfo.getState()));
    nameValuePairs.add(new BasicNameValuePair("phone_nos",sinfo.getPhone_no()));
    nameValuePairs.add(new BasicNameValuePair("days",sinfo.getDays()));
    nameValuePairs.add(new BasicNameValuePair("owner",sinfo.getOwner()));
    nameValuePairs.add(new BasicNameValuePair("timings",sinfo.getTimings()));               nameValuePairs.add(newBasicNameValuePair("contact_person",sinfo.getContact_person()));
    nameValuePairs.add(new BasicNameValuePair("flipkart",sinfo.getSell_flipkart()));
    nameValuePairs.add(new BasicNameValuePair("brand_list",sinfo.getBrands()));
    nameValuePairs.add(new BasicNameValuePair("category",sinfo.getCategories()));
    nameValuePairs.add(new BasicNameValuePair("latitude",sinfo.getLatitude()));
    nameValuePairs.add(new BasicNameValuePair("longitude",sinfo.getLongitude()));
    nameValuePairs.add(new BasicNameValuePair("locality",sinfo.getLocality()));
    nameValuePairs.add(new BasicNameValuePair("snapdeal",sinfo.getSell_snapdeal()));

    try {
        httppost.addHeader("x-auth-token",token);
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
    } catch (UnsupportedEncodingException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    try {

        HttpResponse response = httpclient.execute(httppost);
        HttpEntity entity = response.getEntity();

        json_subct = EntityUtils.toString(entity);
        json_object = new JSONObject(json_subct);
        Log.i("json",json_subct);
        status = json_object.getString("status");

        if(status.equals("success"))
        {
        json_object1=json_object.getJSONObject("resp_id");
        json_object2=json_object1.getJSONObject("_id");
        id=json_object2.getString("$oid");
        Log.i("id for photo",id);

        imb.remove_row(sinfo.getId_value());
        Rename_pic(sinfo.getId_value(),id); 
        status="";
        }
        //imb.remove_row(sinfo.getId_value());
        //Rename_pic(sinfo.getId_value(),id);
        //} 
    }
    catch (SocketTimeoutException e)
    {
        e.printStackTrace();
    }
    catch (ConnectTimeoutException e)
    {
        e.printStackTrace();
    }catch (ClientProtocolException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO -generated catch block
        e.printStackTrace();
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    Log.i("data sent",String.valueOf(imb.get_unsync_count()));
}

}

now my problem is at the end of this function if i check the values in database using the same function get_not_synced() is returns 0 but i haven't deleted the values from database i remove the values in send_data() method but if the loop runs just for 1 time the values returned from the database becomes 0 and i am unable to understand this can somebody please guide me what i am doing wrong here.