如何在ListView中使用DataBinding？

<ListView
    android:id="@+id/listView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:items="@{viewModel.itemList}" />

public class ViewModel {
    private ObservableArrayList<Item> itemList;

    public ObservableArrayList<Item> getItemList() {
        return itemList;
    }
}

public class Item {
    private String name;
    private int quantity;

    // getter and setter methods
}

<layout xmlns:android="http://schemas.android.com/apk/res/android">

    <data>
        <variable
            name="item"
            type="com.example.Item" />
    </data>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@{item.name}" />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@{String.valueOf(item.quantity)}" />
    </LinearLayout>
</layout>

public class ItemAdapter extends BaseAdapter {
    private List<Item> itemList;
    private LayoutInflater inflater;

    public ItemAdapter(Context context, List<Item> itemList) {
        this.itemList = itemList;
        inflater = LayoutInflater.from(context);
    }

    @Override
    public int getCount() {
        return itemList.size();
    }

    @Override
    public Object getItem(int position) {
        return itemList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            ItemBinding binding = DataBindingUtil.inflate(inflater, R.layout.item, parent, false);
            convertView = binding.getRoot();
            convertView.setTag(binding);
        }

        ItemBinding binding = (ItemBinding) convertView.getTag();
        binding.setItem(itemList.get(position));

        return convertView;
    }
}

public class MainActivity extends AppCompatActivity {
    private ViewModel viewModel;
    private ListView listView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        viewModel = new ViewModel();
        // 初始化ViewModel的itemList数据

        listView = findViewById(R.id.listView);
        listView.setAdapter(new ItemAdapter(this, viewModel.getItemList()));
    }
}