try {
            XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
            XmlPullParser xpp = factory.newPullParser();
            InputStream is = getAssets().open("shifts");
            xpp.setInput(new InputStreamReader(is));
            Map<String, List<Map<String, String>>> days = new HashMap<>();
            List<Map<String, String>> day = null;
            Map<String, String> shift = null;
            int eventType = xpp.getEventType();
            while (eventType != XmlPullParser.END_DOCUMENT) {
                if(eventType == XmlPullParser.START_TAG) {
                    int depth = xpp.getDepth();
                    if (depth == 4) {
                        day = new ArrayList<>();
                        days.put(xpp.getName(), day);
                    } else if (depth == 5) {
                        shift = new HashMap<>();
                        day.add(shift);
                    } else if (depth == 6) {
                        shift.put(xpp.getName(), xpp.nextText());
                    }
                }
                eventType = xpp.next();
            }
            Log.d(TAG, "all days data: " + days);
            Log.d(TAG, "Tuesday data: " + days.get("Tuesday"));
            Log.d(TAG, "Tuesday shift 0 data: " + days.get("Tuesday").get(0));
            Log.d(TAG, "Tuesday shift 1 data: " + days.get("Tuesday").get(1));
            Log.d(TAG, "Thursday data: " + days.get("Thursday"));
        } catch (IOException e) {
            e.printStackTrace();
        } catch (XmlPullParserException e) {
            e.printStackTrace();
        }