Parsing Integer from JSON not working

Question

I am attempting to make an app in android studio that gets live currency rates, so I decided to use a JSON to do this. I am currently able to print out the entire JSON as a string, however I would like to be able to set the TextView to the USD conversion rate, however it doesn't work. The TextView does not change. Any help would be greatly appreciated.

public class Converter extends AppCompatActivity {

TextView txtJson;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_converter);
    txtJson = (TextView) findViewById(R.id.tvJsonItem);
    new JsonTask().execute("https://openexchangerates.org/api/latest.json?app_id=870447ebb4d94379972250a3bdaed73f");
}
private class JsonTask extends AsyncTask<String, String, String> {
    protected String doInBackground(String... params) {
        HttpURLConnection connection = null;
        BufferedReader reader = null;
        try {
            URL url = new URL(params[0]);
            connection = (HttpURLConnection) url.openConnection();
            connection.connect();
            InputStream stream = connection.getInputStream();
            reader = new BufferedReader(new InputStreamReader(stream));
            StringBuffer buffer = new StringBuffer();
            String line = "";
            while ((line = reader.readLine()) != null) {
                buffer.append(line + "\n");
                Log.d("Response: ", "> " + line);   
            }
            return buffer.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
    public void onPostExecute(String result) {
        super.onPostExecute(result);
        try {
            JSONObject jObject = new JSONObject(result);
            int USD = jObject.getInt("USD");
            String strUSD = Integer.toString(USD);
            txtJson.setText(strUSD);
        } catch (JSONException e) {
            e.printStackTrace();
        }
    }
}}

OneCricketeer · Answer 1 · 2017-02-02T02:05:54.627

1

You need to get the "rates" object before you can access the "USD" value

Also, it's not an integer. It's a double

getJSONObject("rates").getDouble("USD")

edited Feb 02 '17 at 02:05

answered Feb 02 '17 at 01:51

OneCricketeer

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May I add some code to your answer? – Anis LOUNIS aka AnixPasBesoin Feb 02 '17 at 01:59
You could keep your own answer. – OneCricketeer Feb 02 '17 at 02:07

Parsing Integer from JSON not working

1 Answers1