Notify user of empty data sets(still RecyclerView)

• Quick Code:

@Override
    public void onBindViewHolder(final MyViewHolder holder, int position) {
        switch (holder.getItemViewType()) {
            case SIMPLE_ITEM:
                holder.textView.setText("Item nr " + (position + 1) + ". Tap to remove.");
                holder.itemView.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        int itemPosition = holder.getAdapterPosition();
                        itemCount--;
                        notifyItemRemoved(itemPosition);
                        if(itemCount == 0) {
                            notifyItemInserted(0);
                        }
                    }
                });
                break;
            case EMPTY_ITEM:
                holder.refreshButton.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        notifyItemRemoved(0);
                        itemCount = 10;
                        notifyItemRangeInserted(0, 10);
                    }
                });
                break;
        }
    }

• Show a visual representation that the data set is empty
• Show some kind or refresh button to load data into the view
• Override getItemViewType(int position) to let the adapter know which kind of view it is dealing with.
• NOTE : There is not actual data in the adapter of this example.In onBindViewHolder, we are simply tricking the view into thinking it has more items to display using notifyItemRangeInserted(0, 10)
• Relevant files :
  • https://github.com/blikoon/Ubufundi/blob/master/App1.9/app/src/main/java/com/blikoon/app19/EmptyStateAdapter.java