How to get list of strings from json object

Question

I have the following JSON:

{"errors":[{"code":888,"errorId":"xxx","message":"String value expected","fields":["name", "address"]}, {}, {}]}

I want to be able to get "fields" the following way:

public static String getField(json, errorsIndex, fieldIndex) {
    JSONObject errorJson = json.getJSONArray("errors").getJSONObject(errorIndex);
    String value = errorJson.[getTheListOfMyFields].get(fieldIndex);
    return value;
}

But I can't find a way to make this part [getTheListOfMyFields]. Any suggestion?

Answer 1

Instead of getting a List<String> from the JSON Object, you can access the array of fields in the same way you are accessing the array of errors:

public static String getField(JSONObject json, String errorsIndex, String fieldIndex) {
    JSONObject errorJson = json.getJSONArray("errors").getJSONObject(errorIndex);
    String value = errorJson.getJSONArray("fields").getString(fieldIndex);
    return value;
}

Note that get(fieldIndex) has changed to getString(fieldIndex). That way you don't have to cast an Object to a String.