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| @SuppressLint("StaticFieldLeak") | |
| private class JsonTask extends AsyncTask<String, String, String> { | |
| private HttpURLConnection connection = null; | |
| private BufferedReader reader = null; | |
| protected String doInBackground(String... params) { | |
| try { | |
| URL url = new URL(params[0]); | |
| connection = (HttpURLConnection) url.openConnection(); | |
| connection.connect(); | |
| InputStream stream = connection.getInputStream(); | |
| reader = new BufferedReader(new InputStreamReader(stream)); | |
| StringBuilder builder = new StringBuilder(); | |
| String line; | |
| while ((line = reader.readLine()) != null && !isCancelled()) { | |
| builder.append(line).append("\n"); | |
| } | |
| return builder.toString(); | |
| } catch (MalformedURLException e) { | |
| e.printStackTrace(); | |
| } catch (IOException e) { | |
| e.printStackTrace(); | |
| } finally { | |
| if (connection != null) { | |
| connection.disconnect(); | |
| } | |
| try { | |
| if (reader != null) { | |
| reader.close(); | |
| } | |
| } catch (IOException e) { | |
| e.printStackTrace(); | |
| } | |
| } | |
| return null; | |
| } | |
| @Override | |
| protected void onPostExecute(String json) { | |
| Log.d("TAG", json); | |
| } | |
| } |
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Copy the class content and put it inside
MainActivitybut not inside a method. Invoke like this:new JsonTask().execute("HTTPS_URL_TO_JSON_DATA");, e.g. in a button click handler inonCreate().onPostExecute(String json)will be automatically invoked with the json result.