I Cant See Any Firebaserecycleradapter Items on My Layout

I cant see any FirebaseRecyclerAdapter items on my layout

The tutorial that you are following is wrong. To solve your problem, please consider following these steps.

1. Move all the code from the onStart() method inside onCreate() method except these two lines of code:

   super.onStart();
   firebaseAuth.addAuthStateListener(authStateListener);
   

2. Make your firebaseRecyclerAdapter varaible global:

   private FirebaseRecyclerAdapter<Blog, BlogViewHolder> firebaseRecyclerAdapter;
   

3. Remove FirebaseRecyclerAdapter<Blog, BlogViewHolder> from the onCreate() method.

4. Add the following lines of code in the onStart() and onStop() methods.

   @Override
   protected void onStart() {
       super.onStart();
       firebaseRecyclerAdapter.startListening();
   }
   
   @Override
   protected void onStop() {
       super.onStop();
       if(firebaseRecyclerAdapter != null) {
           firebaseRecyclerAdapter.stopListening();
       }
   }
   

5. The most important thing is to remove the static keyword from your class declaration. Should be only:

   public class PostViewHolder extends RecyclerView.ViewHolder {}
   

FirebaseRecyclerAdapter is not displaying data in my RecyclerView layout

com.google.firebase.database.DatabaseException: Failed to convert
value of type java.lang.Long to String

First of all, it's should be a InvocationTargetException [according your database structure] as you try to cast Long as String in your model. Try to update your model like below:

public class Films {
    public String name;
    public int year;

    ....
}

Then, You should set LayoutManager to your RecyclerView

LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
mFilmsList.setLayoutManager(linearLayoutManager);

Update: You have to update your onBindViewHolder to convert int to String before setting it to TextView using String.valueOf

@Override
protected void onBindViewHolder(FilmsViewHolder filmsViewHolder, int i, Films films) {

    filmsViewHolder.mFilmName.setText(films.getName());
    filmsViewHolder.mFilmYear.setText(String.valueOf(films.getYear()));
}

Firebase Recycler Adapter is not showing anything

As I see in your database, your fields do not corespond to those from your model class. To solve this, delete the old data, add fresh one and your problem will be solved.

As I see in your code, you are using for the declaration of your CustDetailHolder class, the static keyword, which is wrong. You only need:

public class CustDetailHolder extends RecyclerView.ViewHolder

Also remove ButterKnife.bind(this,mView); as I see that you don't use it in your code.

Android FirebaseRecyclerAdapter is not populating RecyclerView

add this line:

  firebaseRecyclerAdapter.startListening();

under this:

  mRecyclerView.setAdapter(firebaseRecyclerAdapter);

inside searchFriends() method.

Unable to use custom layout in FirebaseRecyclerAdapter (Android Studio)

After talking with OP in chat, he exported the JSON and the parent node had the name Blog and not Blog_images, so I told him to change this:

 Query query = FirebaseDatabase.getInstance()
            .getReference()
            .child("Blog_Images");

into this:

 Query query = FirebaseDatabase.getInstance()
            .getReference()
            .child("Blog");

FirebaseRecyclerAdapter with empty view

Here is what I would try. First check out the accepted answer to the question linked below. It provides some very good insight into how Firebase queries work. I'd consider the info trusted since the answer is by someone on the Firebase team:

How to separate initial data load from incremental children with Firebase?

So, based on the answer to the question linked above and the fact that the FirebaseRecyclerAdapter is backed by a FirebaseArray which is populated using a ChildEventListener I would add a Single value event listener on the same database reference used to populate your FirebaseRecyclerAdapter. Something like this:

//create database reference that will be used for both the
//FirebaseRecyclerAdapter and the single value event listener
dbRef = FirebaseDatabase.getInstance().getReference();

//setup FirebaseRecyclerAdapter
mAdapter = new FirebaseRecyclerAdapter<Model, YourViewHolder>(
                Model.class, R.layout.your_layout, YourViewHolder.class, dbRef) {

                @Override
                public void populateViewHolder(YourViewHolder holder, Model model, int position){

                     //your code for populating each recycler view item

                };

mRecyclerView.setAdapter(mAdapter);

//add the listener for the single value event that will function
//like a completion listener for initial data load of the FirebaseRecyclerAdapter
dbRef.addListenerForSingleValueEvent(new ValueEventListener() {
             @Override
             public void onDataChange(DataSnapshot dataSnapshot) {
                 //onDataChange called so remove progress bar

                 //make a call to dataSnapshot.hasChildren() and based 
                 //on returned value show/hide empty view 

                 //use helper method to add an Observer to RecyclerView    
             }

             @Override
             public void onCancelled(DatabaseError databaseError) {

             }
      });

That would handle the initial setup of the RecyclerView. When onDataChange is called on the single value event listener use a helper method to add an observer to the FirebaseRecyclerAdapter to handle any subsequent additions/deletions to database location.

mObserver = new RecyclerView.AdapterDataObserver() {
            @Override
            public void onItemRangeInserted(int positionStart, int itemCount) {
                //perform check and show/hide empty view
            }

            @Override
            public void onItemRangeRemoved(int positionStart, int itemCount) {
                //perform check and show/hide empty view
            }
           };
mAdapter.registerAdapterDataObserver(mObserver);

FirebaseRecyclerAdapter not showing data in Fragment

Same problem occurred me. Simply remove the service_list.setHasFixedSize(true).

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