KmlDocument mKmlDocument = new KmlDocument();

        OverpassAPIProvider overpassProvider = new OverpassAPIProvider();
        BoundingBox oBB = new BoundingBox(startPoint.getLatitude() + 0.25, startPoint.getLongitude() + 0.25,
                startPoint.getLatitude() - 0.25, startPoint.getLongitude() - 0.25);
        String oUrl = overpassProvider.urlForTagSearchKml("highway=speed_camera", oBB, 500, 30);
        boolean ok = overpassProvider.addInKmlFolder(mKmlDocument.mKmlRoot, oUrl);

            if (ok) {
                Drawable defaultMarker = ResourcesCompat.getDrawable(getResources(), R.drawable.ic_stop, null);
                Bitmap defaultBitmap = ((BitmapDrawable) defaultMarker).getBitmap();
                Style defaultStyle = new Style(defaultBitmap, 0x901010AA, 3.0f, 0x20AA1010);
                KmlFeature.Styler styler = new MyKmlStyler(defaultStyle);

                FolderOverlay kmlOverlay = (FolderOverlay) mKmlDocument.mKmlRoot.buildOverlay(map, defaultStyle, styler, mKmlDocument);
                map.getOverlays().add(kmlOverlay);
                BoundingBox bb = mKmlDocument.mKmlRoot.getBoundingBox();
                if (bb != null) {
                    setInitialViewOn(bb);
                }
            } else
                Toast.makeText(this, "Error when loading KML", Toast.LENGTH_SHORT).show();