FirestoreRecyclerAdapterSample

Sample Android project using FirestoreRecyclerAdapter. This project is using Firebase Cloud Firestore as a databases.

Using FirestoreRecyclerAdapter to populate RecyclerView

Before you create the create the project in Android Studio, you should:

1. Create a Firebase Project here.
2. Go to Database menu and choose Cloud Firestore.
3. Add Collection named "friends".
4. In the "firends" collection, add some documents with some field (name, image, title, company) in the each documents. Also you should integrate the Firebase project with the project that will you create in Android Studio. For more information, go to the Firebase Docs.

Dependencies

Some dependencies thats should be implemented in your project:

implementation "com.google.firebase:firebase-firestore:11.4.2"
implementation "com.firebaseui:firebase-ui-auth:3.0.0"
implementation "com.firebaseui:firebase-ui-firestore:3.0.0"

Query

To retrive all documents in the collection use:

Query query = db.collection("friends");

Using FirestoreRecyclerAdapter

Configure the adapter by building FirestoreRecyclerOptions:

 FirestoreRecyclerOptions<FriendsResponse> response = new FirestoreRecyclerOptions.Builder<FriendsResponse>()
                .setQuery(query, FriendsResponse.class)
                .build();

Create FirestoreRecyclerAdapter:

 FirestoreRecyclerAdapter adapter = new FirestoreRecyclerAdapter<FriendsResponse, FriendsHolder>(response) {
            @Override
            public void onBindViewHolder(FriendsHolder holder, int position, FriendsResponse model) {
                progressBar.setVisibility(View.GONE);
                holder.textName.setText(model.getName());
                holder.textTitle.setText(model.getTitle());
                holder.textCompany.setText(model.getCompany());
                Glide.with(getApplicationContext())
                        .load(model.getImage())
                        .into(holder.imageView);

                holder.itemView.setOnClickListener(v -> {
                    Snackbar.make(friendList, model.getName()+", "+model.getTitle()+" at "+model.getCompany(), Snackbar.LENGTH_LONG)
                            .setAction("Action", null).show();
                });
            }

            @Override
            public FriendsHolder onCreateViewHolder(ViewGroup group, int i) {
                View view = LayoutInflater.from(group.getContext())
                        .inflate(R.layout.list_item, group, false);

                return new FriendsHolder(view);
            }

            @Override
            public void onError(FirebaseFirestoreException e) {
                Log.e("error", e.getMessage());
            }
        };