How to convert the json array to string array in android?

Question

I am converting an json array to string array thats doesn't exist any tag. I tried with all tricks but not succeeded.

json array:-

"validValues":["01_Abacus","02_AlarmClock","03_Basketball","04_Beaker","55_Watch"]

Code for convert the json array to string values

if (jsonComponentObj.has(TAG_VALID_VALUES)) {
                    String value = jsonComponentObj.getString(TAG_VALID_VALUES);
                    Logs.e("value " + value);
                    if (!value.equals("null")) {
                        JSONArray jsonArray = jsonComponentObj
                                .getJSONArray(TAG_VALID_VALUES);

                        if (jsonArray != null) {
                            ArrayList<String> stringArray = new ArrayList<String>();
                            for (int j = 0; j < jsonArray.length(); j++) {
                                try {
                                    JSONObject jsonObject = jsonArray
                                            .getJSONObject(j);
                                    stringArray.add(jsonObject.toString());
                                } catch (JSONException e) {
                                    Logs.e("Exception: "+e.toString());
                                    e.printStackTrace();
                                }
                            }
                        }
                    }

                }

Exception:

org.json.JSONException: Value 01_Abacus at 0 of type java.lang.String cannot be converted to JSONObject

If anyone have idea. Please reply. Thanks in advance..

Answer 1

Because validValues JSONArray contain only Strings instead of JSONObject .so get all values from JSONArray as:

for (int j = 0; j < jsonArray.length(); j++) {

           String str_value = jsonArray.optString(j);
           stringArray.add(str_value);

   }

Answer 2

Your json array contains Strings not json object .Therefore to get Strings from json array directly use getString() ,So Change

JSONObject jsonObject = jsonArray.getJSONObject(j);
stringArray.add(jsonObject.toString());

to

 stringArray.add(jsonArray.getString(j));

or

stringArray.add(jsonArray.optString(j));

Answer 3

You should use optString(int) to coerce a string value from array. Using getString(int) would cause problems if ever the values in the array were not strings.

for (int j = 0; j < jsonArray.length(); j++) {
    String value = jsonArray.optString(j);
    stringArray.add(value);     
}

If you want to give a default value, use optString(int, String) .

Answer 4

try JSONObject jsonObject = jsonArray.getString(j);

instead of JSONObject jsonObject = jsonArray.getJSONObject(j);