[Android] XmlPullParser로 xml 파싱하기

<?xml version="1.0" encoding="UTF-8"?>
<breakfast_menu>
    <food>
        <name>Belgian Waffles</name>
        <price>$5.95</price>
        <description>
            Two of our famous Belgian Waffles with plenty of real maple syrup
        </description>
        <calories>650</calories>
    </food>
    <food>
        <name>Strawberry Belgian Waffles</name>
        <price>$7.95</price>
        <description>
            Light Belgian waffles covered with strawberries and whipped cream
        </description>
        <calories>900</calories>
    </food>
    <food>
        <name>Berry-Berry Belgian Waffles</name>
        <price>$8.95</price>
        <description>
            Belgian waffles covered with assorted fresh berries and whipped cream
        </description>
        <calories>900</calories>
    </food>
    <food>
        <name>French Toast</name>
        <price>$4.50</price>
        <description>
            Thick slices made from our homemade sourdough bread
        </description>
        <calories>600</calories>
    </food>
    <food>
        <name>Homestyle Breakfast</name>
        <price>$6.95</price>
        <description>
            Two eggs, bacon or sausage, toast, and our ever-popular hash browns
        </description>
        <calories>950</calories>
    </food>
</breakfast_menu>

public class Food {
    private String name;
    private String price;
    private String description;
    private String calories; //DTO

public class MainActivity extends AppCompatActivity {
    List<Food> foodList;
    List<String> list = new ArrayList<>();
    ListView listView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        listView = findViewById(R.id.listView);

        foodList = parseXML();

        for (Food food : foodList) {
            list.add(food.getName() + "(" + food.getPrice() + ")");
        }

        ArrayAdapter<String > adapter = new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,list);
        listView.setAdapter(adapter);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Toast.makeText(getBaseContext(),foodList.get(position).toString(),Toast.LENGTH_SHORT).show();
            }
        });
    }

    private List<Food> parseXML() {
        List<Food> foods = new ArrayList<>();
        boolean isName = false, isDesc = false, isCalories = false, isPrice = false;
        String name, desc, price, calories, tagName;
        try {
            XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
            XmlPullParser parser = factory.newPullParser();
            parser.setInput(getResources().openRawResource(R.raw.food), "UTF-8");

            Food food = null;
            int eventType = parser.getEventType();
            while (eventType != XmlPullParser.END_DOCUMENT) {
                switch (eventType) {
                    case XmlPullParser.START_TAG:
                        tagName = parser.getName();
                        switch (tagName) {
                            case "food":
                                food = new Food();
                                break;
                            case "name" :
                                isName = true;
                                break;
                            case "description" :
                                isDesc = true;
                                break;
                            case "price" :
                                isPrice = true;
                                break;
                            case "calories" :
                                isCalories = true;
                                break;
                        }
                        break;
                    case XmlPullParser.END_TAG:
                        tagName = parser.getName();
                        switch (tagName) {
                            case "food":
                                foods.add(food);
                                break;
                            case "name" :
                                isName = false;
                                break;
                            case "description" :
                                isDesc = false;
                                break;
                            case "price" :
                                isPrice = false;
                                break;
                            case "calories" :
                                isCalories = false;
                                break;
                        }
                        break;
                    case XmlPullParser.TEXT:
                        if (isName) food.setName(parser.getText());
                        if (isDesc) food.setDescription(parser.getText());
                        if (isPrice) food.setPrice(parser.getText());
                        if (isCalories) food.setCalories(parser.getText());
                        break;
                }
                eventType = parser.next();
            }

        } catch (XmlPullParserException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }

        Log.d("읽은 내용" , foods.toString());
        return foods;
    }
}