如何获取json数组的子节点的值

Question

[我在解析此链接（https://gnews.io/api/v3/top-news?&token=dd21eb88599ccb3411eaad9b314cde23）的数据列表时遇到一些问题，我能够从json数组（文章）中获取数据，但是我如何从josn数组中获取数据（源）

    private void getWebApiData() {
        String WebDataUrl = "https://gnews.io/api/v3/top-news?&token=dd21eb88599ccb3411eaad9b314cde23";
        new AsyncHttpTask.execute(WebDataUrl);
    }

    @SuppressLint("StaticFieldLeak")
    public class AsyncHttpTask extends AsyncTask<String, Void, String> {

        @Override
        protected String doInBackground(String... urls) {
            String result = "";

            URL url;
            HttpsURLConnection urlConnection = null;
            try {
                url = new URL(urls[0]);
                urlConnection = (HttpsURLConnection) url.openConnection();
                if (result != null) {
                    String response = streamToString(urlConnection.getInputStream());
                    parseResult(response);
                    return result;
                }
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(String result) {
            if (result != null) {
                newsAdapter = new NewsAdapter(getActivity(), newsClassList);
                listView.setAdapter(newsAdapter);
                Toast.makeText(getContext(), "Data Loaded Successfully", Toast.LENGTH_SHORT).show();

            } else {
                Toast.makeText(getContext(), "Failed to load data!", Toast.LENGTH_SHORT).show();
            }
            progressBar.setVisibility(View.GONE);
        }
    }

    private String streamToString(InputStream stream) throws IOException {
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(stream));
        String line;
        String result = "";
        while ((line = bufferedReader.readLine()) != null) {
            result += line;
        }

        // Close stream
        if (null != stream) {
            stream.close();
        }
        return result;
    }


    private void parseResult(String result) {
        try {
            JSONObject response = new JSONObject(result);
            JSONObject response2 = response.getJSONObject("articles");
            NewsClass newsClass;
            for (int i = 0; i < newsClass.length(); i++) {
                JSONObject post = newsClass.optJSONObject(i);
                String title = post.optString("title");
                newsClass = new newsClass();
                newsClass.setNews_Title(title);
                artistClassList.add(newsClass);
            }

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

这是我正在使用的代码，用于获取文章的数据。获取我尝试过的资源

    private void parseResult(String result) {
        try {
            JSONObject response = new JSONObject(result);
            JSONObject response2 = response.getJSONArray("articles");
            JSONObject response3 = response2.getJSONObject("sources");
            NewsClass newsClass;
            for (int i = 0; i < newsClass.length(); i++) {
                JSONObject post = newsClass.optJSONObject(i);
                String title = post.optString("title");
                newsClass = new newsClass();
                newsClass.setNews_Title(title);
                artistClassList.add(newsClass);
            }

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

但是我想我没有正确获得代码

这是我尝试的第二个选项

    private void parseResult(String result) {
        try {
            JSONObject response = new JSONObject(result);

            JSONObject response = response2.getJSONObject("sources");
            NewsClass newsClass;
            for (int i = 0; i < newsClass.length(); i++) {
                JSONObject post = newsClass.optJSONObject(i);
                String title = post.optString("title");
                newsClass = new newsClass();
                newsClass.setNews_Title(title);
                artistClassList.add(newsClass);
            }

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

但是这只给我空文本字段，用于填充数据的空格，但为空白请任何帮助将不胜感激