FirebaseRecyclerAdapter cannot be applied to

Question

code:

@Override
    public void onStart() {
        super.onStart();

        recyclerViewadapter=new FirebaseRecyclerAdapter<RecycleModel, UserViewHolder>(RecycleModel.class, R.layout.recycler_model, UserViewHolder.class, muserDB)
        {
            @Override
            protected void onBindViewHolder(@NonNull UserViewHolder holder, int position, @NonNull RecycleModel model) {

            }

            @NonNull
            @Override
            public UserViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
                return null;
            }
        };

error on FirebaseRecyclerAdapter

my gradle file app level

Answer 1

To solve this, please use the following code:

FirebaseRecyclerOptions<RecycleModel> firebaseRecyclerOptions = new FirebaseRecyclerOptions.Builder<RecycleModel>()
    .setQuery(muserDB, RecycleModel.class)
    .build();

recyclerViewadapter=new FirebaseRecyclerAdapter<RecycleModel, UserViewHolder>(firebaseRecyclerOptions) {
    @Override
    protected void onBindViewHolder(@NonNull UserViewHolder holder, int position, @NonNull RecycleModel model) {
            // set the model to the holder
    }

    @NonNull
    @Override
    public UserViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        return null;
    }
};

FirebaseRecyclerAdapter class takes in the last version as an argument in the constructor a FirebaseRecyclerOptions object not those 4 arguments anymore.

If you are interested, this is a recommended way in which you can retrieve data from a Firebase Realtime database and display it in a RecyclerView using FirebaseRecyclerAdapter.