Firebase Firestore从集合QuerySnapshot获取数据

Question

我想从Firebase Firestore数据库中获取数据。请告诉我在哪里修复代码。 或Firebase新版本，我无法使用

我想在HomeFragment上显示Post RecyclerView。

enter image description here

HomeFragment

public class HomeFragment extends Fragment {
    private RecyclerView blog_list_view;

    private List<BlogPost> blog_list;

    private FirebaseFirestore mStore;
    private FirebaseAuth mAuth;
    private BlogRecyclerAdapter blogRecyclerAdapter;

    private DocumentSnapshot lastVisible;
    private Boolean isFirstPageFirstLoad = true;

    public HomeFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_home, container, false);
        blog_list = new ArrayList<>();
        blog_list_view = view.findViewById(R.id.blog_list_view);

        blogRecyclerAdapter = new BlogRecyclerAdapter(blog_list);
        blog_list_view.setLayoutManager(new LinearLayoutManager(container.getContext()));
        blog_list_view.setAdapter(blogRecyclerAdapter);

        mStore = FirebaseFirestore.getInstance();
        mStore.collection("Posts").addSnapshotListener(new EventListener<QuerySnapshot>() {
            @Override
            public void onEvent(@Nullable QuerySnapshot documentSnapshots, @Nullable FirebaseFirestoreException e) {

                for(DocumentChange doc: documentSnapshots.getDocumentChanges()){
                    if(doc.getType() == DocumentChange.Type.ADDED){

                        BlogPost blogPost = doc.getDocument().toObject(BlogPost.class);
                        blog_list.add(blogPost);

                        blogRecyclerAdapter.notifyDataSetChanged();
                    }
                }

            }
        });

        return view;
    }

}

错误的HomeFragment查找图片