Android - How to correctly write a JSONObject string

Question

I'm trying to read/write a json file. But after the first write the json is escaped and reading it again doesn't work. I have the following json structure but with a lot more value :

{
  "events": {
    "XdQKixgtraz17eDHb6OW": {
      "department": "Côte-d'Or",
      "objectName": "Dijon",
      "uid": "PMhzfzWlm6vN2yL1kY2i"
    }
  }
}

Here is how i build my json string :

JSONObject eventsJsonObject = new JSONObject();
JSONObject eventsData = new JSONObject();

for(Event event: eventsList){
    String eventString = gson.toJson(event);
    eventsData.put(event.getUid(), eventString);
}

eventsJsonObject.put("events", eventsData);

writeFile(filename, eventsJsonObject.toString());

I end up with a string looking like this and i can't read it again .. :

{"events":{"XdQKixgtraz17eDHb6OW":"{\"department\":\"Côte-d'Or\",\"objectName\":\"Dijon\",\"uid\":\"PMhzfzWlm6vN2yL1kY2i\"}"}}

As you can see there is a quote before the third semi colon that shouldn't be there. How can i correctly build my json string ?

Thanks for your time.

Edit : The error came from where i build my json string to write in file so i have rewrite my question.

Answer 1

Try this code

public static JSONObject readJSONFile (String path, Context context) {
String jsonStr = null;
try {
    InputStream is = getActivity().getAssets().open(path);
    int size = is.available();
    byte[] buffer = new byte[size];
    is.read(buffer);
    is.close();
    jsonStr = new String(buffer, "UTF-8");
} catch (IOException ex) {
    ex.printStackTrace();
    return null;
}
    JSONObject jsonObj = new JSONObject((jsonStr ));
    return jsonObj;
}