Tengo un método desde el cual obtengo los datos del servicio web utilizando la publicación http en Android.

mi codigo es

public class PropertyRequestService  {

static String result;
PropertiesList localProperty = new PropertiesList();
List<PropertiesList> Properties;
List<PropertiesList> PropertiesRS;

public List<PropertiesList>  getAllPropertiesStuff() {

    try {

        HttpClient client = new DefaultHttpClient();
        HttpPost httppost = new HttpPost(
                "Here Given Webservice URL");
        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs
                .add(new BasicNameValuePair("string", "value"));

        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
        HttpResponse response = client.execute(httppost);

        HttpEntity entity = response.getEntity();
        if (entity != null) {


            InputStream instream = entity.getContent();
           String response1= convertStreamToString(instream);

            // Closing the input stream will trigger connection release
            instream.close();
            //result = EntityUtils.toString(entity);
            Log.i("RESPONSE=", response1);

            JSONObject json = new JSONObject(response1);

            PropertiesRS.add(SplitResult(json));
        }
    } catch (Exception e1) {
        e1.printStackTrace();
    }

    return PropertiesRS;
}

 public static String convertStreamToString(InputStream instream) {

     BufferedReader reader = new BufferedReader(new InputStreamReader(instream));
        StringBuilder sb = new StringBuilder();

        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                instream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
}

Este es el Logcat,

05-21 11:44:27.320: W/System.err(13234): org.json.JSONException: Value <?xml of type java.lang.String cannot be converted to JSONObject
05-21 11:44:27.320: W/System.err(13234):    at org.json.JSON.typeMismatch(JSON.java:107)
05-21 11:44:27.320: W/System.err(13234):    at org.json.JSONObject.<init>(JSONObject.java:158)
05-21 11:44:27.328: W/System.err(13234):    at org.json.JSONObject.<init>(JSONObject.java:171)
05-21 11:44:27.328: W/System.err(13234):    at com.BuildersUpdate.PropertySearchTypes.PropertyRequestService.getAllPropertiesStuff(PropertyRequestService.java:68)

Mi servicio web devuelve los datos en este formato,

05-21 11:44:27.320: I/RESPONSE=(13234): <?xml version="1.0" encoding="utf-8"?>
05-21 11:44:27.320: I/RESPONSE=(13234): <string xmlns="http://localhost/">[{"TbbId":0,"PropertyID":1066666,"BuilderID":"9250c666-e76c-4206-8b37-343b2bb11a89","BuilderName":"David Weekley Homes","Notes":"","Address":"1 TBB4307","SchoolDistrict":null,"School":null,"CityID":"Austin","CountyID":"","StateID":"TX","Zip":"78737","Lat":"30.192781000000000","Lng":"-97.984480000000000","Price":391990,"PropertyStatusID":"AV","PropertyStatusDescription":"Available","StageID":"TBB","StageDescription":"To-Be-Built Home","TypeID":1,"TypeDescription":"House","SubdivisionID":3312,"SubdivisionName":"Belterra","FloorPlanNumber":"4307","Remarks":"","OldNew":null,"PropertyInMyListFlag":null,"FreePostingFlag":"F","PropertySubscriptionPlan":null,"PropertySubscriptionPaymentType":null,"BalanceAmount":0,"PropertyLicenseFlag":"N","PlanNumber":null,"SubdivisionFloorPlanID":null,"SubdivisionFloorPlanName":"Newtown","ShowDirections":"Monday-Saturday 10am-6pm\nSunday 12pm-6pm ","DrivingDirections":"From HWY 290, Take 290 West towards Dripping Springs. Belterra is 7 miles past the intersection of 290 and 71 on the left. Turn left onto Belterra Drive. Turn right onto Abbott Drive, our model is on the left.","PropertyClass":"TBB","RemarksId":0,"VerifiedBU":"Y","SubdivisionDescription":null,"Contact1Name":"Rachea McMurray-Pendley","Contact1Phone":"866-933-5539","Contact1PhoneAlt":"","Contact2Name":"Telenna Thompson","Contact2Phone":"512-821-8821","Contact2PhoneAlt":"","Email":"","Beds":4,"Baths":3,"HalfBaths":1,"Living":0,"Dining":0,"OtherRooms":"","Stories":2.0,"Master":"Down","Garage":3.0,"SquareFeet":3320,"LotSize":"","LotDescription":"Enjoy a host of amenities and award-winning homes in Belterra, a premier community in Austin, Texas. Located just minutes from downtown Austin, Belterra offers residents the opportunity to live, work and play in a community that fits their lifestyle. Here, you can enjoy the &amp;ldquo;Exemplary&amp;rdquo; schools of Dripping Springs ISD plus: &amp;nbsp; Resort-style pool with splash pad for the kids Rooster Springs Elementary School on site Recreation center, outdoor pavilion, club house and fitness center Sport court, ball fields and several children's playscapes Over 400 acres dedicated to parks, sports fields and undisturbed green spaces Miles of walking trails to enjoy the great outdoors 70 x 130 homesites that back up to greenbelts with gorgeous hill country views Over 400 acres dedicated to parks, sports fields and undisturbed green space","CommunityTypeID":11,"CommunityTypeDescription":"Standard","LotWidth":0,"LotLength":0,"Acres":0,"Water":"","Sewer":"","DryUtilities":"","Topography":"","Trees":"","VirtualTourURL":"","InternetOption":"","WaterId":0,"SewerId":0,"DryUtilitiesId":0,"TopographyId":0,"TreesId":0,"InternetOptionId":0,"WaterIds":null,"SewerIds":null,"DryUtilitiesIds":null,"TopographyIds":null,"TreesIds":null,"InternetOptionIds":null,"MinimumPrice":0,"MaximumPrice":0,"MinimumPropertySquareFeet":0,"MaximumPropertySquareFeet":0,"MinimumBeds":0,"MaximumBeds":0,"MinimumBaths":0,"MaximumBaths":0,"MinimumHalfBaths":0,"MaximumHalfBaths":0,"MinimumStories":0,"MaximumStories":0,"MinimumGarages":0,"MaximumGarages":0,"IsModel":null,"CustomHomeModelId":0,"BrandName":null,"SchoolDistrictID":0,"SchoolDistrictName":null,"ElementarySchool":null,"MiddleSchool":null,"HighSchool":null,"SchoolComments":"Please visit the school district's website for additional information about attendance boundaries and school activities.","HasHOA":true,"HOA":"","HOAFee":106.25,"HOABillingPeriod":"Quarterly","CommissionPaid":"TBD","BuyerIncentive":"Please call for current incentives.","AgentIncentive":"Please call for current incentives.","PropertyImageID":5775047,"PropertyImage":"PropertyImages/20130316\\P1066666__031613163405_2040133366_5775047.jpg","IsModified":false,"StatusID":40,"StatusDescription":"Active","EntryDate":new Date(1350438245980),"ModifyDate":new Date(1363450564963),"AvailableDate":new Date(-59011459200000),"UserIDModifiedBy":"4a2aef16-e7d9-469a-95ad-5c8935cb6bab","UserIDApprovedBy":"0000000

No sé por qué se está planteando esta excepción.

No puedo cambiar la aplicación para enviar datos en formato json debido a la restricción de los requisitos del cliente.

¿Cómo convertir la respuesta al objeto json en android? Esto está consumiendo mi valioso tiempo y no seguir adelante. Estoy atrapado aquí.

Cualquier idea o sugerencia por favor!

Gracias por adelantado..