how to check if a JSONArray is empty in java?

Question

I am working on an android app that get json content of a webservice called \"WebUntis\". The Json content i am getting looks like:

{\"jsonrpc\":\"2.0\",\"id         


        

Answer 1

This is another way to do it...

call.enqueue(new Callback() {
    @Override
    public void onResponse(Call call,
                           Response response) {

        JSONObject jsonObject;
        try {
            jsonObject = new JSONObject(new Gson().toJson(response.body()));


            JSONArray returnArray = jsonObject.getJSONArray("my_array");

            // Do Work Only If Not Null
            if (!returnArray.isNull(0)) {

                for (int l = 0; l < returnArray.length(); l++) {
                    if (returnArray.length() > 0) {

                        // Get The Json Object
                        JSONObject returnJSONObject = returnArray.getJSONObject(l);

                        // Get Details
                        String imageUrl = returnJSONObject.optString("image");

                    }
                }
            }

        } catch (JSONException e) {
            e.printStackTrace();
        }

    }

    @Override
    public void onFailure(Call call,
                          Throwable t) {

    }
});