JSONException: Value of type java.lang.String cannot be converted to JSONObject

Question

I have a JSON file with 2 JSON-Arrays in it: One Array for routes and one Array for sights.

A route should consist of several sights where the user gets navigated to. Unfortunately I am getting the error:

JSONException: Value of type java.lang.String cannot be converted to JSONObject

Here are my variables and the code that parses the JSON-File:

private InputStream is = null; private String json = ""; private JSONObject jObj = null;  try {     BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);     StringBuilder sb = new StringBuilder();     String line = null;     while ((line = reader.readLine()) != null) {         sb.append(line + "\n");     }     is.close();     // hier habe ich das JSON-File als String     json = sb.toString();     Log.i("JSON Parser", json); } catch (Exception e) {     Log.e("Buffer Error", "Error converting result " + e.toString()); }  // try parse the string to a JSON object try {     jObj = new JSONObject(json); } catch (JSONException e) {     Log.e("JSON Parser", "Error parsing data " + e.toString()); }  // return JSON String return jObj; } 

Log.i("JSON Parser", json); shows me that at the beginning of the generated string there is a strange sign:

but the error happens here:

try {     jObj = new JSONObject(json); } catch (JSONException e) {     Log.e("JSON Parser", "Error parsing data " + e.toString()); } 

04-22 14:01:05.043: E/JSON Parser(5868): Error parsing data org.json.JSONException: Value //STRANGE SIGN HERE // of type java.lang.String cannot be converted to JSONObject

anybody has a clue on how to get rid of these signs in order to create the JSONObject?

Answer 1

Reason is some un-wanted characters was added when you compose the String. The temp solution is

return new JSONObject(json.substring(json.indexOf("{"), json.lastIndexOf("}") + 1)); 

But try to remove hidden characters on source String.