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Editorial Team
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Asked: 2026-06-13T12:35:02+00:00

Fixed the link, now I get a JSON error msg java.lang.ClassCastException: org.json.JSONObject$1 cannot be

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Fixed the link, now I get a JSON error msg

 java.lang.ClassCastException: org.json.JSONObject$1 cannot be cast to org.json.JSONObject

Apparently my error lies somewhere here:

String response     = streamToString(urlConnection.getInputStream());
        JSONObject jsonObj  = (JSONObject) new JSONTokener(response).nextValue();             
        JSONArray groups    = (JSONArray) jsonObj.getJSONObject("response").getJSONArray("groups");

        int length          = groups.length();
        if (length > 0) {                
            for (int i = 0; i < length; i++) {                    
                JSONObject group    = (JSONObject) groups.get(i);                    
                JSONArray items     = (JSONArray) group.getJSONArray("items");                     
                int ilength         = items.length();                     
                for (int j = 0; j < ilength; j++) {                        
                    JSONObject item = (JSONObject) items.get(j);                         
                    FsqVenue venue  = new FsqVenue();                         
                    venue.id        = item.getString("id");                        
                    venue.name      = item.getString("name");                         
                    JSONObject location = (JSONObject) item.getJSONObject("location");                         
                    Location loc    = new Location(LocationManager.GPS_PROVIDER);                         
                    loc.setLatitude(Double.valueOf(location.getString("lat")));                        
                    loc.setLongitude(Double.valueOf(location.getString("lng")));                         
                    venue.location  = loc;                        
                    venue.address   = location.getString("address");                        
                    venue.distance  = location.getInt("distance");                        
                    venue.type      = group.getString("type");                         
                    VenueList.add(venue);
                    }

tomcat message

10-25 16:37:32.731: I/System.out(12828): https://api.foursquare.com/v2/venues/search?            ll=2.94,101.66&client_id=xxxxx&client_secret=xxxxxxx


10-25 16:37:32.731: D/FoursquareApi(12828): OPening URLhttps://api.foursquare.com/v2/venues/search?ll=2.94,101.66&client_id=xxxxxxx&client_secret=xxxxxxx
10-25 16:37:34.645: W/System.err(12828): java.lang.ClassCastException: org.json.JSONObject$1 cannot be cast to org.json.JSONObject
10-25 16:37:34.645: W/System.err(12828):    at com.example.reddot.Foursquare.getNearby(Foursquare.java:57)
10-25 16:37:34.653: W/System.err(12828):    at com.example.reddot.MainActivity$LoadPlaces.doInBackground(MainActivity.java:466)
10-25 16:37:34.653: W/System.err(12828):    at com.example.reddot.MainActivity$LoadPlaces.doInBackground(MainActivity.java:1)
10-25 16:37:34.653: W/System.err(12828):    at android.os.AsyncTask$2.call(AsyncTask.java:287)
10-25 16:37:34.653: W/System.err(12828):    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
10-25 16:37:34.653: W/System.err(12828):    at java.util.concurrent.FutureTask.run(FutureTask.java:137)
10-25 16:37:34.661: W/System.err(12828):    at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
10-25 16:37:34.661: W/System.err(12828):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
10-25 16:37:34.661: W/System.err(12828):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
10-25 16:37:34.661: W/System.err(12828):    at java.lang.Thread.run(Thread.java:856)
10-25 16:37:34.661: I/System.out(12828): errorjava.lang.ClassCastException: org.json.JSONObject$1 cannot be cast to org.json.JSONObject
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1 Answer

  1. Editorial Team

    using url connection() returns an empty result as such json will not be able to phrase empty data. the alternative to this is to use googleclient Api as follows 

            HttpTransport transport = new NetHttpTransport();
        HttpRequestFactory httpRequestFactory = createRequestFactory   (HTTP_TRANSPORT);
        String ll = String.valueOf(df.format(lonlat))+","+String.valueOf(df.format(lonlat2));
        url = (API_URL+ "venues/search?ll="+ll+"&client_id="+CLIENT_ID+"&client_secret="+CLIENT_SECRET+"&v"+v); 
        HttpRequest request = httpRequestFactory
                .buildGetRequest(new GenericUrl(url));


        System.out.println(request);
        HttpResponse httpResponse = request.execute();

        JSONObject object = new JSONObject(httpResponse.parseAsString());
        JSONObject foursquareResponse = (JSONObject) object.get("response");
        JSONArray groups    = (JSONArray) foursquareResponse.get("groups");
        JSONObject group = (JSONObject)groups.get(0);
        JSONArray items = (JSONArray)group.get("items");
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