Video of problem

Straight routes useless. Is it possible to eliminate them? there are straight lines that i wouldn’t want.

Input from rest_api it’s a simple json in this link:

https://drive.google.com/file/d/1S2_xOB9Bj6EqiFwuRNGV5JvrjPjZoQD0/view?usp=sharing

Output: map with markers and **without ANY straight lines. **.

Code :

onMapReady(@NonNull GoogleMap map) {
        googleMap = map;
        googleMap.getUiSettings().setMapToolbarEnabled(false);
        googleMap.getUiSettings().setZoomControlsEnabled(false);

        routePoints = new ArrayList<>();
        noRoutePoints = new ArrayList<>();

        String idTappaSelezionata = MainActivity.idUltimaTappaSelezionata;

        if (idTappaSelezionata != null) {
            mapView.setVisibility(View.GONE);

            StringRequest getPercorsoRequest = new StringRequest(Request.Method.POST, Config.GET_PERCORSO_URL,
                    response -> {
                        Logger.show("Mappa getData response: " + response + " | Url: " + Config.GET_PERCORSO_URL);

                        try {
                            JSONObject responseObject = new JSONObject(response);
                            JSONArray percorsoArray = responseObject.getJSONArray("percorso");

                            if (percorsoArray.length() == 0) {
                                clearRoutes();
                            } else {
                                parseAndDisplayRoute(percorsoArray);
                            }

                            mapView.setVisibility(View.VISIBLE);
                        } catch (JSONException e) {
                            // handle exception
                        }
                    },
                    error -> {
                        // handle error
                    }) {
                @Override
                protected Map<String, String> getParams() {
                    Map<String, String> params = new HashMap<>();
                    params.put("user_id", MainActivity.userLoggedId);
                    params.put("id_tappa", idTappaSelezionata);
                    params.put("id_via", MainActivity.idUltimaViaSelezionata);
                    return params;
                }
            };

            SingletonVolley.getInstance(getActivity()).addToRequestQueue(getPercorsoRequest);
        } else {
            showNoRouteDialog();
        }
    }

    private void clearRoutes() {
        getActivity().runOnUiThread(() -> {
            routePoints.clear();
            noRoutePoints.clear();
        });
    }

    private void parseAndDisplayRoute(JSONArray percorsoArray) throws JSONException {
        for (int i = 0; i < percorsoArray.length(); i++) {
            Gson gson = new Gson();
            String tmpPercorso = percorsoArray.getJSONObject(i).toString();
            Percorso newP = gson.fromJson(tmpPercorso, Percorso.class);

            if ("rosso".equals(newP.getColore())) {
                routePoints.add(new LatLng(newP.getLatitude(), newP.getLongitude()));
            } else if ("blu".equals(newP.getColore())) {
                noRoutePoints.add(new LatLng(newP.getLatitude(), newP.getLongitude()));
            }
        }

        getActivity().runOnUiThread(() -> {
            if (!routePoints.isEmpty()) {
                googleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(routePoints.get(0), 14));
            }

            if (routePoints.size() > 1 && noRoutePoints.size() > 1) {
                addPolylines();
            }

            addMarker();
            setPolylineClickListener();
        });
    }

    private void addPolylines() {
        List<LatLng> percorso = PolyUtil.simplify(routePoints, 0.0001); // Adjusted tolerance

        PolylineOptions percorsoPolyline = new PolylineOptions()
                .addAll(percorso)
                .clickable(true)
                .width(10)
                .color(Color.RED);

        googleMap.addPolyline(percorsoPolyline);

       // List<LatLng> simplifiedNoRoute = PolyUtil.simplify(noRoutePoints, 0.0001); // Adjusted tolerance

        /*PolylineOptions polylineOptionsRosso = new PolylineOptions()
                .addAll(simplifiedRoute)
                .clickable(true)
                .width(10)
                .color(Color.RED);

        googleMap.addPolyline(polylineOptionsRosso);

        PolylineOptions polylineOptionsBlu = new PolylineOptions()
                .addAll(simplifiedNoRoute)
                .clickable(true)
                .width(10)
                .color(Color.BLUE);

        googleMap.addPolyline(polylineOptionsBlu);*/



        getExperiences(googleMap);
    }

    private void addMarker() {
        LatLng markerMe = routePoints.get(0);
        int customMarkerHeight = 100;
        int customMarkerWidth = 100;
        BitmapDrawable bitmapDrawable = (BitmapDrawable) getResources().getDrawable(R.drawable.me);
        Bitmap customMarkerBitmap = Bitmap.createScaledBitmap(bitmapDrawable.getBitmap(), customMarkerWidth, customMarkerHeight, false);
        BitmapDescriptor customMarkerMe = BitmapDescriptorFactory.fromBitmap(customMarkerBitmap);

        MarkerOptions markerOp = new MarkerOptions()
                .position(markerMe)
                .icon(customMarkerMe)
                .title("Marker " + getId());

        googleMap.addMarker(markerOp);
    }

    private void setPolylineClickListener() {
        googleMap.setOnPolylineClickListener(polyline -> {
            List<LatLng> path = polyline.getPoints();
            String navigationUri = "http://maps.google.com/maps?daddr=" + path.get(path.size() - 1).latitude + "," + path.get(path.size() - 1).longitude;
            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(navigationUri));
            intent.setPackage("com.google.android.apps.maps");
            startActivity(intent);
        });
    }

    private void showNoRouteDialog() {
        mapView.setVisibility(View.GONE);

        String message = "Non è stato selezionato nessun percorso. Premere OK per scegliere un percorso.";
        androidx.appcompat.app.AlertDialog.Builder dialog = new androidx.appcompat.app.AlertDialog.Builder(getActivity());
        dialog.setTitle("Le Vie di Francesco");
        dialog.setMessage(message);

        dialog.setPositiveButton("OK", (dialogInterface, i) -> {
            ((MainActivity) getActivity()).caricaFragment("menu_home", new Vie(), "Vie");
        });
        dialog.setCancelable(false);
        dialog.show();
    }

Where is my bad?