Android JSONArray remove before API 19

gistfile1.java

// Example of use: remove(i, savedProfiles);

public static JSONArray remove(final int idx, final JSONArray from) {
    final List<JSONObject> objs = asList(from);
    objs.remove(idx);

    final JSONArray ja = new JSONArray();
    for (final JSONObject obj : objs) {
        ja.put(obj);
    }

    return ja;
}

public static List<JSONObject> asList(final JSONArray ja) {
    final int len = ja.length();
    final ArrayList<JSONObject> result = new ArrayList<JSONObject>(len);
    for (int i = 0; i < len; i++) {
        final JSONObject obj = ja.optJSONObject(i);
        if (obj != null) {
            result.add(obj);
        }
    }
    return result;
}

Excellent, thank you very much!

in may code json array is not using this remove method instead is using the internal method
........what to do?

is this method reliable to run on UI thread?
or do I need to wrap this in an AsyncTask?