gistfile1.txt

public class StorageListAdapter extends RecyclerView.Adapter<StorageListAdapter.StorageViewHolder> {

    static RecyclerviewClickListener _listener;

    //
    //  internal class ViewHolder
    //
    static class StorageViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener
    {
        // the repeating item in the adapter
        final Button storageItemView;
        Context _context;

        // constructor setting the clicklisteners and buttons
        StorageViewHolder(View itemView, Context context, RecyclerviewClickListener listener)
        {
            super(itemView);
            _listener = listener;
            _context = context;
            storageItemView = itemView.findViewById(R.id.storageButton);
            itemView.setOnClickListener(this);
            //itemView.setOnLongClickListener(this);
        }

        public void setOnItemClickListener(RecyclerviewClickListener clickListener)
        {
            StorageListAdapter._listener = clickListener;
        }

        @Override
        public void onClick(View v)
        {
            Intent intent = new Intent(_context, StorageActivity.class);
            intent.putExtra("storageID", ((Button) v).getId());
            _context.startActivity(intent);
        }

        public boolean onLongClick(View v)
        {
            _listener.onItemLongClick(getAdapterPosition(), v);
            return false;
        }
    }
    //
    //  _________________________________________________
    //

    final LayoutInflater _inflater;
    List<Storage> _storages;
    Context _context;

    // constructor, recieving the context
    public StorageListAdapter(Context context)
    {
        _context = context;
        _inflater = LayoutInflater.from(context);
    }

    // viewholder creator, returner with listener and viewItem attached
    @Override
    public StorageViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
    {
        View itemView = _inflater.inflate(R.layout.button_storage, parent, false);
        return new StorageViewHolder(itemView, _context, _listener);
    }

    // binds the viewholder to the adapter
    @Override
    public void onBindViewHolder(StorageViewHolder holder, int position)
    {
        if (_storages != null)
        {
            Storage current = _storages.get(position);
            String buttonTitle = current.get_storageName() + "\n \uD83D\uDCCD " + current.get_storageLoc();
            holder.storageItemView.setText(buttonTitle);
            holder.storageItemView.setId(current._storageID);
        }
        else
        {
            // covers the case of data not being ready yet.
            holder.storageItemView.setText("No Word");
        }
    }

    // getItemCount() is called many times, and when it is first called,
    // storage has not been updated (means initially, it's null, and we can't return null).
    @Override
    public int getItemCount()
    {
        if (_storages != null)
        {
            return _storages.size();
        }
        else
        {
            return 0;
        }
    }

    // sets the storages
    public void setStorages(List<Storage> storages)
    {
        _storages = storages;
        notifyDataSetChanged();
    }
}



package com.mwb.digitalstorage.adapter;

public class ShelfListAdapter extends RecyclerView.Adapter<ShelfListAdapter.ShelfViewHolder> {

    static RecyclerviewClickListener _listener;

    //
    //  internal class ViewHolder
    //
    public static class ShelfViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener
    {
        // the repeating item in the adapter
        final Button shelfItemView;
        Context _context;

        // constructor setting the clicklisteners and buttons
        ShelfViewHolder(View itemView, Context context, RecyclerviewClickListener listener)
        {
            super(itemView);
            _listener = listener;
            _context = context;
            shelfItemView = itemView.findViewById(R.id.storageButton);
            itemView.setOnClickListener(this);
            //itemView.setOnLongClickListener(this);
        }

        public void setOnItemClickListener(RecyclerviewClickListener clickListener)
        {
            ShelfListAdapter._listener = clickListener;
        }

        @Override
        public void onClick(View v)
        {
           // Intent intent = new Intent(_context, StorageActivity.class);
           // intent.putExtra("shelfID", ((Button) v).getText().toString());
           // _context.startActivity(intent);
        }

        public boolean onLongClick(View v)
        {
            _listener.onItemLongClick(getAdapterPosition(), v);
            return false;
        }
    }
    //
    //  _________________________________________________
    //

    final LayoutInflater _inflater;
    List<Shelf> _shelfs;
    Context _context;

    // constructor, recieving the context
    public ShelfListAdapter(Context context)
    {
        _context = context;
        _inflater = LayoutInflater.from(context);
    }


    @NonNull
    @Override
    public ShelfViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType)
    {
        View itemView = _inflater.inflate(R.layout.button_storage, parent, false);
        return new ShelfViewHolder(itemView, _context, _listener);
    }

    @Override
    public void onBindViewHolder(@NonNull ShelfViewHolder holder, int position)
    {
        if (_shelfs != null) {
            Shelf current = _shelfs.get(position);
            holder.shelfItemView.setText(current.get_shelfName() + "\n \uD83D\uDCCD " + current.get_shelfLoc());

        } else {
            // covers the case of data not being ready yet.
            holder.shelfItemView.setText("No shelfs");
        }
    }

    @Override
    public int getItemCount()
    {
        return 0;
    }

}