private String postid;

    private PostAdapter postAdapter;
    private List<Post> postList;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.activity_post_fragment, container, false);

        SharedPreferences prefs = Objects.requireNonNull(getContext()).getSharedPreferences("PREFS", MODE_PRIVATE);
        postid = prefs.getString("postid", "none");

        RecyclerView recyclerView = view.findViewById(R.id.recycler_view);
        recyclerView.setHasFixedSize(true);
        LinearLayoutManager mLayoutManager = new LinearLayoutManager(getContext());
        recyclerView.setLayoutManager(mLayoutManager);

        postList = new ArrayList<>();
        postAdapter = new PostAdapter(getContext(), postList);
        recyclerView.setAdapter(postAdapter);

        readPost();

        return view;
    }