Recylerview in fragment doesnt populate with items - android-recyclerview

Question

Sorry for this noob questons, but I am starting to learn Firebase UI and 2 days in a row I am stuck with populating a RecyclerView in a fragment.
I tried to move my code around in onViewCreated , onCreateView methods but I think that is not the problem, in log it just throws one error:
2020-02-18 15:08:26.730 4467-4467/com.social.voteup E/RecyclerView: No adapter attached; skipping layout
Double checked everything is linking with the xml file.
Here is my code:
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_home, container, false);
return view;
}
On View Created method
mRecyclerView = view.findViewById(R.id.posts_recyclerview);
mSwipeRefreshLayout = view.findViewById(R.id.refreshLayout);
mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
setupAdapter();
// Refresh Action on Swipe Refresh Layout
mSwipeRefreshLayout.setOnRefreshListener(() -> mAdapter.refresh());
I use the adapter inside the fragment as shown here:
private void setupAdapter() {
// Init Paging Configuration
PagedList.Config config = new PagedList.Config.Builder()
.setEnablePlaceholders(false)
.setPrefetchDistance(2)
.setPageSize(10)
.build();
// Init Adapter Configuration
FirestorePagingOptions<Post> options = new FirestorePagingOptions.Builder<Post>()
.setLifecycleOwner(this)
.setQuery(mQuery, config, Post.class)
.build();
// Instantiate Paging Adapter
mAdapter = new FirestorePagingAdapter<Post, PostViewHolder>(options) {
#NonNull
#Override
public PostViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = getLayoutInflater().inflate(R.layout.item_post, parent, false);
return new PostViewHolder(view);
}
#Override
protected void onBindViewHolder(#NonNull PostViewHolder viewHolder, int i, #NonNull Post post) {
// Bind to ViewHolder
viewHolder.bind(post);
}
#Override
protected void onError(#NonNull Exception e) {
super.onError(e);
Log.e("MainActivity", Objects.requireNonNull(e.getMessage()));
}
protected void onLoadingStateChanged(#NonNull LoadingState state) {
switch (state) {
case LOADING_INITIAL:
case LOADING_MORE:
mSwipeRefreshLayout.setRefreshing(true);
break;
case LOADED:
mSwipeRefreshLayout.setRefreshing(false);
break;
case ERROR:
mSwipeRefreshLayout.setRefreshing(false);
break;
case FINISHED:
mSwipeRefreshLayout.setRefreshing(false);
break;
}
}
};
// Finally Set the Adapter to mRecyclerView
mRecyclerView.setAdapter(mAdapter);
}
Here is the full source file on pastebin:https://pastebin.com/YkzKRuUD

Answer 1

Add this line of code in the On View Created method.
You have created an adapter but you haven't attached the adapter to the recyclerView
mRecyclerView = view.findViewById(R.id.posts_recyclerview);
mSwipeRefreshLayout = view.findViewById(R.id.refreshLayout);
mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
mRecyclerView.setAdapter(new setupAdapter());
// Refresh Action on Swipe Refresh Layout
mSwipeRefreshLayout.setOnRefreshListener(() -> mAdapter.refresh());