public HomeFragment() {
    // Required empty public constructor
}
@Override
public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    view = inflater.inflate(R.layout.fragment_home, container, false);
    recyclerView.setHasFixedSize(true);
    mUserRef = FirebaseDatabase.getInstance().getReference().child("users");
    mRootRef = FirebaseDatabase.getInstance().getReference().child("images");
    options = new FirebaseRecyclerOptions.Builder<Model>()
            .setQuery(mRootRef, Model.class)
            .setLifecycleOwner(this)
            .build();

    firebaseRecyclerAdapter = new
            FirebaseRecyclerAdapter<Model, MyViewHolder>(options) {
                @Override
                public long getItemId(int position) {
                    return position;
                }

                @Override
                public int getItemViewType(int position) {
                    return position;
                }

                @Override
                protected void onBindViewHolder(@NonNull final MyViewHolder holder, int position, @NonNull final Model model) {
                    holder.loadImage(model.getUrl());

                    holder.downloadLink.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {

                                holder.downloadImage(getActivity(), model.getNumber(), model.getUrl());

                            }
                        }
                    });


                    }
                    holder.shareLink.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            holder.shareImage(getActivity(), model.getNumber(), model.getUrl());
                        }
                    });
                    holder.likeStatus(model.getNumber());
                    holder.downloadStatus(model.getNumber());
                    holder.favoriteLink.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            isLiked = true;
                            mUserRef.addValueEventListener(new ValueEventListener() {
                                @Override
                                public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                                    if (isLiked.equals(true)) {
                                        if (dataSnapshot.child(user.getUid()).hasChild(model.getNumber())) {
                                            mUserRef.child(user.getUid()).child(model.getNumber()).child("postnumber").removeValue();
                                            isLiked = false;
                                        } else {
                                            mUserRef.child(user.getUid()).child(model.getNumber()).child("postnumber").setValue(model.getNumber());
                                            isLiked = false;
                                        }
                                    }
                                }

                                @Override
                                public void onCancelled(@NonNull DatabaseError databaseError) {

                                }
                            });
                        }
                    });
                }

                @NonNull
                @Override
                public MyViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
                    View holderView = LayoutInflater.from(context).inflate(R.layout.row_item, viewGroup, false);
                    return new MyViewHolder(holderView);
                }
            };
    linearLayoutManager=new LinearLayoutManager(context);
    recyclerView.setLayoutManager(linearLayoutManager);
    recyclerView.setAdapter(firebaseRecyclerAdapter);
    return view;
}