How to access data from the innermost "level" of a JSON?

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How to access data from the innermost "level" of a JSON?

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#1 by (4 votes)

6

I needed a way to access the innermost "level" of JSON below: (name, value, last query and source)

{
    "status": true,
    "valores": {
        "USD": {
            "nome": "Dólar",
            "valor": 2.333,
            "ultima_consulta": 1386349203,
            "fonte": "UOL Economia - http://economia.uol.com.br/cotacoes/"
        }
    }
}

I'm trying to access this way, but it drops in JSONException :

   try {

        String resposta = ar.run(url); //resposta contém o JSON que retorna do WS
        Log.i("RETORNO: -------", resposta);
        JSONObject jo = new JSONObject(resposta);
        JSONArray ja;
        ja = jo.getJSONArray(resposta);
        moedas.setAbreviacao(ja.getJSONObject(0).getString("USD"));
        Log.i("RESULTADO: ", moedas.getAbreviacao());
        Log.i("RESULTADO: ", moedas.getDescricao());
    } catch (IOException e) {
        e.printStackTrace();
    } catch (JSONException e) {
        e.printStackTrace();;
    } finally {
        dialog.dismiss();

    }

I even tried to use GSON, but I was not successful either.

java android json

asked by anonymous 09.10.2015 / 18:59

1 answer

Real time update on Android apps Understanding the pythonic way of dealing with properties

score 4 · Accepted Answer

There is no array in JSON that you have - you only have objects (and primitive values - strings, numbers, etc). You will need to access them as such, something like the code below:

JSONObject jo = new JSONObject(resposta);
JSONObject valores = jo.getJSONObject("valores");
JSONObject usd = valores.getJSONObject("USD");
String nome = usd.getString("nome");
double valor = usd.getDouble("valor");
long ultimaConsulta = usd.getLong("ultima_consulta");
String fone = usd.getString("fone");