HoverItemDecoration itemDecoration = new HoverItemDecoration(
        new HoveringCallback() {
            @Override
            public void attachToRecyclerView(@Nullable RecyclerView recyclerView) {
                super.attachToRecyclerView(recyclerView);
                addOnDropListener(new OnDroppedListener() {
                    @Override
                    public void onDroppedOn(RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
                        Toast.makeText(
                                MainActivity.this,
                                "Dropped on position " + target.getAdapterPosition(),
                                Toast.LENGTH_SHORT).show();
                    }
                });
            }
        },
        new ItemBackgroundCallback() {
            private int hoverColor = Color.parseColor("#e9effb");

            @Override
            public int getDefaultBackgroundColor(@NonNull RecyclerView.ViewHolder viewHolder) {
                return Color.WHITE;
            }

            @Override
            public int getDraggingBackgroundColor(@NonNull RecyclerView.ViewHolder viewHolder) {
                return Color.WHITE;
            }

            @Override
            public int getHoverBackgroundColor(@NonNull RecyclerView.ViewHolder viewHolder) {
                return hoverColor;
            }
        });
itemDecoration.attachToRecyclerView(recyclerView);