Question

I have been searching Google and implementing different methods to try and get this to work, but I can’t seem to get a key -> value to remove from the memory. What I am trying to achieve is if something with the server were to happen such as the server reboots, than when you make a request to the server it would come back as a network error. It works well if I stop the server, make a request. But if I start the server, make a request and it receives good results, and than kill the server and go back, it still holds the previous results so it doesn’t see a problem. Hope that is clear enough. An example of my code is:

  JSONObject json;
  json = MF.geoLocal(address, city, state, postal);
        try {
              if(json == null || json.isNull("status")){
                    PopIt(getString(R.string.alert_network_error));
              } else {
                    if(json.getString("status").equals("OK")){
                          address = json.getString("address");
                          city = json.getString("city");
                          county = json.getString("county");
                          state = json.getString("state");
                          postal = json.getString("postal");
                          lat = json.getString("latitude");
                          lon = json.getString("longitude");
                          db.open();
                          String method = (db.isDatabaseSet())? "update" : "insert";
                          db.addUser(method, email, fname, mname, lname, address, apt, city, county, state, postal, lat, lon, phone, mobile, dob, gender);
                          db.close();
                    }
              }
        }

The Class for geoLocat is:

public JSONObject geoLocal(String address, String city, String state, String postal){
    JSONObject json = null;
    List<NameValuePair> params = new ArrayList<NameValuePair>();
    params.add(new BasicNameValuePair("address", address));
    params.add(new BasicNameValuePair("city", city));
    params.add(new BasicNameValuePair("state", state));
    params.add(new BasicNameValuePair("postal", postal));
    json = jsonParser.getJSONFromUrl(geoURL, params);
    return json;
}

And the class to parse these requests is:

static InputStream is = null;
static JSONObject jObj = null;
static String json = "";

// constructor
public JSONParser() {

}

public JSONObject getJSONFromUrl(String url, List<NameValuePair> params) {

    // Making HTTP request
    try {
        // defaultHttpClient
        DefaultHttpClient httpClient = new DefaultHttpClient();
        HttpPost httpPost = new HttpPost(url);
        httpPost.setEntity(new UrlEncodedFormEntity(params));

        HttpResponse httpResponse = httpClient.execute(httpPost);
        HttpEntity httpEntity = httpResponse.getEntity();
        is = httpEntity.getContent();

    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    try {
        BufferedReader reader = new BufferedReader(new InputStreamReader(
                is, "iso-8859-1"), 8);
        StringBuilder sb = new StringBuilder();
        String line = null;
        while ((line = reader.readLine()) != null) {
            sb.append(line + "\n");
        }
        is.close();
        json = sb.toString();
        Log.e("JSON", json);
    } catch (Exception e) {
        Log.e("Buffer Error", "Error converting result " + e.toString());
    }

    // try parse the string to a JSON object
    try {
        jObj = new JSONObject(json);
    } catch (JSONException e) {
        Log.e("JSON Parser", "Error parsing data " + e.toString());
    }

    // return JSON String
    return jObj;

}

Any help would be appreciated, this has raddled my brain now for days.

Answer 1

Well, in case anyone else runs into this same problem, changing to following

static InputStream is = null;
static JSONObject jObj = null;
static String json = ""; 

to

InputStream is = null;
JSONObject jObj = null;
String json = ""; 

Will solve the problem to where the information isn’t saved into the memory.