Error while Reading and Parsing JSONArray String from SharedPreference

Question

I have stored JSONArray as a String in SharedPreference.This is my JSONObject

JSONObject info = new JSONObject();
        try {
            info.put("name", full_name);
            info.put("phone", foodie_contact);                    
            info.put("no_people", no_peoples);
        } catch (JSONException e) {
            e.printStackTrace();
        }

And I am storing this Object in Array and array in SharedPreference as

JSONArray array=new JSONArray();
            array.put(info.toString());
            alert.noInternetAlert(getActivity());
            edit=addqueuetemp.edit();
            edit.putString("queuedata",array.toString());
            edit.apply();

Now, I am taking JSONArray from SharedPreference and parse it as

try {
                JSONArray array=new JSONArray(addqueuetemp.getString("queuedata","[]"));
                for(int i=0;i<array.length();i++){
                    JSONObject obj=array.getJSONObject(i+1);
                    Log.i("OBJECT",obj.toString());
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }

The format of String I am getting after reading from Preference is
["{\"name\":\"payal\",\"phone\":\"7427427427\",\"no_people\":\"5\"}"]
I am getting Error as
Value {"name":"payal","phone":"7427427427","no_people":"5"} at 0 of type java.lang.String cannot be converted to JSONObject
How to resolve this ? where is the actual problem ?

Use Gson to parse string to and from JSON. issue is direct parsing to string from JSON appends additional quotes. — Jeel Vankhede
– Jeel Vankhede, Commented Oct 30, 2018 at 6:04

Vladyslav Matviienko · Accepted Answer · 2018-10-30 06:06:11Z

1

You are putting a String into your JSONArray, not the JSONObject:

array.put(info.toString());

That's why you can only get it as a String.

Remove that .toString(), and it will work

answered Oct 30, 2018 at 6:06

Vladyslav Matviienko

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Comments

Ali Ahmed · Accepted Answer · 2018-10-30 06:05:45Z

1

Try changing

array.put(info.toString());

to

array.put(info);

As you want to save object in array , but actually you're saving String in array

answered Oct 30, 2018 at 6:05

Ali Ahmed

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Comments

karan · Accepted Answer · 2018-10-30 06:06:08Z

0

To convert your string to json array you need to use follow code.

JsonParser jsonParser = new JsonParser();
JSONArray jo = (JSONArray)jsonParser.parse(json);

answered Oct 30, 2018 at 6:06

karan

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