@Override
 public void onClick(View view) {
   PictureMemory memory = (PictureMemory) dataSet.get(getAdapterPosition());
   Intent intent = new Intent(context, PhotoActivity.class);
   intent.putExtra(PhotoActivity.EXTRA_PLACE_NAME, memory.getTitle());
   intent.putExtra(PhotoActivity.EXTRA_FILENAMES, memory.getPictures());
   context.startActivity(intent);
 }
  private void bindPictureViewHolder(RecyclerView.ViewHolder holder, int position) {
    PictureMemory memory = (PictureMemory) dataSet.get(position);
    PictureViewHolder pvh = (PictureViewHolder) holder;
    pvh.placeTv.setText(memory.getTitle());
    pvh.timeTv.setText(memory.getTime());
    String[] pictures = memory.getPictures();
    if (pictures != null) {
      if (pictures.length < 3) {
        String firstPicName = pictures[0];
        imageHelper.loadImage(pvh.imageView, firstPicName, 400, 400);
        pvh.imageView.setVisibility(View.VISIBLE);

        for (int i = 0; i < 9; i++) {
          pvh.nine[i].setVisibility(View.GONE);
        }

      } else if (pictures.length >= 3 && pictures.length < 6) {
        for (int i = 0; i < 3; i++) {
          String firstPicName = pictures[i];
          imageHelper.loadSquareImage(pvh.nine[i], firstPicName, 300);
          pvh.nine[i].setVisibility(View.VISIBLE);
        }

        pvh.imageView.setVisibility(View.GONE);
        for (int i = 3; i < 9; i++) {
          pvh.nine[i].setVisibility(View.GONE);
        }

      } else if (pictures.length >= 6 && pictures.length < 9) {
        for (int i = 0; i < 6; i++) {
          String firstPicName = pictures[i];
          imageHelper.loadSquareImage(pvh.nine[i], firstPicName, 300);
          pvh.nine[i].setVisibility(View.VISIBLE);
        }

        pvh.imageView.setVisibility(View.GONE);
        for (int i = 6; i < 9; i++) {
          pvh.nine[i].setVisibility(View.GONE);
        }

      } else if (pictures.length >= 9) {
        for (int i = 0; i < 9; i++) {
          String firstPicName = pictures[i];
          imageHelper.loadSquareImage(pvh.nine[i], firstPicName, 300);
          pvh.nine[i].setVisibility(View.VISIBLE);
        }

        pvh.imageView.setVisibility(View.GONE);
      }
    }
  }