How to sort JSONArray in android

Question

How to sort JSONArray by its Tag name with ascending and descending on android.

In my application i have a JSON like the following and need to display the data according

Answer 1

It seems to me like the easiest way to do it, rather than "sorting the JSON Array" as you suggest, is to just parse the whole thing into a data structure which contains the information like so:

class Results {
     String user_id;
     Strung comment_id;
}

Save this as an ArrayList or a [insert favourite List structure].

Once you've parsed the entire JSON Array, you can then sort your ArrayList based on the user_id field using Collections.sort, giving you them in order

Answer 2

Following code may useful to you.

ArrayList<ResultBean> user_array;
Collections.sort(user_array, new Comparator<ResultBean>() {
    @Override
    public int compare(ResultBean data1, ResultBean data2) {
        if (data1.getUserId() >= data2.getUserId()) {
            return -1;
        } else {
            return 1;
        }
    }
});

Your ResultBean will look like following.

public class ResultBean {
    //other methods and declarations...
    public int getUserId() {
        return userId;
    }
}

Answer 3

public static JSONArray sortJsonArray(JSONArray array) {
    List<JSONObject> jsons = new ArrayList<JSONObject>();
    for (int i = 0; i < array.length(); i++) {
        jsons.add(array.getJSONObject(i));
    }
    Collections.sort(jsons, new Comparator<JSONObject>() {
        @Override
        public int compare(JSONObject lhs, JSONObject rhs) {
            String lid = lhs.getString("comment_id");
            String rid = rhs.getString("comment_id");
            // Here you could parse string id to integer and then compare.
            return lid.compareTo(rid);
        }
    });
    return new JSONArray(jsons);
}

This piece of code could return a sorted JSONArray, but i still recommend you to parse JSONObject to your own data beans, and then do the sorting on them.