مشکل عدم خواندن اطلاعات از json

من یک فایل json  دارم و میخوام ازش اطلاعاتی بخونم زمانی که پروژه رو اجرا میکنم به من json رو توی log نشون میده ولی وقتی میخوام اونو به یک متن اضافه کنم با ارور زیر مواجه میشم

ممنون میشم اگر راهنمایی کنید

 public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        TextView txt = (TextView)findViewById(R.id.txt);


        HttpClient client = new DefaultHttpClient();
        HttpGet method = new HttpGet("http://192.168.1.3/json.txt");
        try {
            HttpResponse resp />            int code = response.getStatusLine().getStatusCode();
            Log.i("LOG", "Code: " + code);
            InputStream stream = response.getEntity().getContent();

            String result = inputstreamToString(stream);
            Log.i("LOG", "result: " + result);

            JSONObject object = new JSONObject(result);
            
            JSONArray anotherArray = object.getJSONArray("tabs");
         for (int i = 0; i < anotherArray.length(); i++)
      {
        JSONObject tab = anotherArray.getJSONObject(i);
         // title
        String title = tab.getString("title");
        titlelist.add(title);
      }
         
            txt.setText(titlelist.get(0));
        }
        
        
        catch (ClientProtocolException e) {
            e.printStackTrace();
        }
        catch (IOException e) {
            e.printStackTrace();
        }
        catch (JSONException e) {
            e.printStackTrace();
        }
    }


    private String inputstreamToString(InputStream inputStream) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
        StringBuilder builder = new StringBuilder();

        try {
            String line;
            while ((line = reader.readLine()) != null) {
                builder.append(line);
            }

            return builder.toString();
        }
        catch (Exception e) {
            e.printStackTrace();
        }

        return "";
    }

 04-25 08:31:33.538: W/System.err(1296): org.json.JSONException: Value ? of type java.lang.String cannot be converted to JSONObject
04-25 08:31:33.548: W/System.err(1296):  at org.json.JSON.typeMismatch(JSON.java:107)
04-25 08:31:33.548: W/System.err(1296):  at org.json.JSONObject.<init>(JSONObject.java:158)
04-25 08:31:33.548: W/System.err(1296):  at org.json.JSONObject.<init>(JSONObject.java:171)
04-25 08:31:33.558: W/System.err(1296):  at com.uncocoder.course.app.test_client.TestClientActivity.onCreate(TestClientActivity.java:41)
04-25 08:31:33.558: W/System.err(1296):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
04-25 08:31:33.558: W/System.err(1296):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
04-25 08:31:33.558: W/System.err(1296):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
04-25 08:31:33.568: W/System.err(1296):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
04-25 08:31:33.568: W/System.err(1296):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
04-25 08:31:33.568: W/System.err(1296):  at android.os.Handler.dispatchMessage(Handler.java:99)
04-25 08:31:33.578: W/System.err(1296):  at android.os.Looper.loop(Looper.java:123)
04-25 08:31:33.578: W/System.err(1296):  at android.app.ActivityThread.main(ActivityThread.java:4627)
04-25 08:31:33.578: W/System.err(1296):  at java.lang.reflect.Method.invokeNative(Native Method)
04-25 08:31:33.578: W/System.err(1296):  at java.lang.reflect.Method.invoke(Method.java:521)
04-25 08:31:33.588: W/System.err(1296):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-25 08:31:33.588: W/System.err(1296):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-25 08:31:33.588: W/System.err(1296):  at dalvik.system.NativeStart.main(Native Method)
04-25 08:31:33.748: W/InputManagerService(58): Got RemoteException sending setActive(false) notification to pid 1270 uid 10040