Parser returns only 1/3 of the entire string!

[Marin Capranov]

Hi there!

From the title, it might seem strange, but that's the deal. I have a parser that it should return a list of polylines (Direction API). However, it is returning only one value and even that value is incomplete.

Parser.Class

public String[] parseDirections(String jsonData){

        JSONArray jsonArray = new JSONArray();
        JSONObject jsonObject;

        try {
            jsonObject = new JSONObject(jsonData);
            jsonArray = jsonObject.getJSONArray("routes").getJSONObject(0)
                    .getJSONArray("legs")
                    .getJSONObject(0)
                    .getJSONArray("steps");

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

        return getPaths(jsonArray);

    }

    private String[] getPaths(JSONArray jsonArray) {

        int count = jsonArray.length();
        String[] polyLines = new String[count];

        for (int i = 0; i < count; i++) {
            try {
                polyLines[i] = getPath(jsonArray.getJSONObject(i));
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
        return polyLines;
    }

    private String getPath(JSONObject jsonObject) throws JSONException {

        String polyLine;

        polyLine = jsonObject.getJSONObject("polyline").getString("points");
        Log.i("poly", "getPath: " + polyLine);
        return polyLine;
    }

Main.Class

 String[] test  = null;
            DownloadUrl downloadUrl = new DownloadUrl();
            @Override
            public void run() {
                try {
                    test = parser.parseDirections(downloadUrl.readUrl(distUrl));
                    displayDirection(test);
                } catch (IOException e) {
                    e.printStackTrace();
                }
                Log.i("test", "run: " + Arrays.toString(test));

            }

the value returned is "{kd_IljoJ"  which is not even the full string. It is supposed to be "{kd_IljoJd@L|Ab@pA\\r@P^L`AXxA`@|@VxBn@dAZNDd@NNDd@PXLJDRLJDNJHFHFRPJJdAbATPRJTJPDVBF@P@L@"

As you can see it returns a small bit only, not to mention that I actually need a list of them and not just one. Am I missing something?

[Stephan van Hulst]

Returned from where? And what is the return value of downloadUrl.readUrl(distUrl)?

[Marin Capranov]

distUrl ->

public String getDistanceUrl(String origin, String destination, String wayPoints){

        String alt = "true";

            StringBuilder stringBuilder = new StringBuilder("https://maps.googleapis.com/maps/api/directions/json?");
            stringBuilder.append("origin=" + origin);
            stringBuilder.append("&destination=" + destination);
            stringBuilder.append("&alternatives=" + alt);
            stringBuilder.append("&mode=" + "DRIVING");
            stringBuilder.append("&waypoints=" + wayPoints);
            stringBuilder.append("&key=" + <API_KEY>");

            return stringBuilder.toString();
    }

and returned from an JSON Object:

Ex:

"steps" : [                  {                     "distance" : {                        "text" : "0.7 km",                        "value" : 679                     },                     "duration" : {                        "text" : "2 mins",                        "value" : 96                     },                     "end_location" : {                        "lat" : 52.4506144,                        "lng" : -1.8887025                     },                     "html_instructions" : "Head \u003cb\u003esouth\u003c/b\u003e on \u003cb\u003eMoseley Rd\u003c/b\u003e/\u003cwbr/\u003e\u003cb\u003eA435\u003c/b\u003e towards \u003cb\u003eHomer St\u003c/b\u003e\u003cdiv style=\"font-size:0.9em\"\u003eContinue to follow A435\u003c/div\u003e\u003cdiv style=\"font-size:0.9em\"\u003eDestination will be on the right\u003c/div\u003e",                     "polyline" : {                        "points" : "{kd_IljoJd@L|Ab@pA\\r@P^L`AXxA`@|@VxBn@dAZNDd@NNDd@PXLJDRLJDNJHFHFRPJJdAbATPRJTJPDVBF@P@L@"                     },                     "start_location" : {                        "lat" : 52.4564595,                        "lng" : -1.8859882                     },                     "travel_mode" : "DRIVING"                  }               ],               "traffic_speed_entry" : [],               "via_waypoint" : []            },            {               "distance" : {                  "text" : "1.1 km",                  "value" : 1117               },               "duration" : {                  "text" : "3 mins",                  "value" : 171               },               "end_address" : "2a Church Rd, Balsall Heath, Birmingham B13 9AG, UK",               "end_location" : {                  "lat" : 52.4516491,                  "lng" : -1.8789525               },               "start_address" : "45 Alcester Rd, Birmingham B13 8AA, UK",               "start_location" : {                  "lat" : 52.4506144,                  "lng" : -1.8887025               },

[Stephan van Hulst]

So that JSON you posted is the result of calling readUrl()? What you posted is not a complete JSON response.

[Marin Capranov]

I know but the problem is that the JSON is too big and I can't post it. Basically what I posted is one of the 20 waypoints that are in the JSON file.

[Stephan van Hulst]

Can you show us the exact line that is logged from your call to Log.i("poly", "getPath: " + polyLine) ?

[Marin Capranov]

02-17 15:39:59.251 12128-12806/com.example.authorisationfirebase I/poly: getPath: {kd_IljoJ

[Stephan van Hulst]

Okay, you need to create an SSCCE. It's the smallest application you can write that demonstrates the problem. Remove everything like downloading the JSON, just assign the entire JSON data to a constant using a string literal, and then try to get the offending polyline point from the JSONObject. You can do all of this in a single class file.

Post the SSCCE here in it's entirety. The goal is to give us the minimal amount of code that we can compile and run ourselves.