Java中片段中带有ViewModel的RecyclerView

public class MyViewModel extends ViewModel {
    private MutableLiveData<List<Item>> itemList;

    public LiveData<List<Item>> getItemList() {
        if (itemList == null) {
            itemList = new MutableLiveData<>();
            loadItemList();
        }
        return itemList;
    }

    private void loadItemList() {
        // 从网络或数据库中加载数据，并将数据存储在itemList中
    }
}

public class MyFragment extends Fragment {
    private MyViewModel viewModel;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        viewModel = new ViewModelProvider(this).get(MyViewModel.class);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        // 创建并配置RecyclerView
        RecyclerView recyclerView = new RecyclerView(requireContext());
        // ...
        
        // 创建并设置RecyclerView的适配器
        MyAdapter adapter = new MyAdapter();
        recyclerView.setAdapter(adapter);
        
        // 观察ViewModel中的数据变化，并更新RecyclerView的数据
        viewModel.getItemList().observe(getViewLifecycleOwner(), items -> {
            adapter.setItems(items);
            adapter.notifyDataSetChanged();
        });

        return recyclerView;
    }
}