在适配器中添加Intent。

示例代码：

public class MyAdapter extends RecyclerView.Adapter {

private Context mContext;
private List mItemList;

public MyAdapter(Context context, List itemList) {
    mContext = context;
    mItemList = itemList;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(mContext).inflate(R.layout.item_layout, parent, false);
    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    final Item item = mItemList.get(position);

    holder.titleTextView.setText(item.getTitle());
    holder.descriptionTextView.setText(item.getDescription());
    holder.imageView.setImageResource(item.getImageResId());

    holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(mContext, DetailActivity.class);
            intent.putExtra("item", item);
            mContext.startActivity(intent);
        }
    });
}

@Override
public int getItemCount() {
    return mItemList.size();
}

public class ViewHolder extends RecyclerView.ViewHolder {

    public TextView titleTextView;
    public TextView descriptionTextView;
    public ImageView imageView;

    public ViewHolder(View itemView) {
        super(itemView);

        titleTextView = (TextView) itemView.findViewById(R.id.title_text_view);
        descriptionTextView = (TextView) itemView.findViewById(R.id.description_text_view);
        imageView = (ImageView) itemView.findViewById(R.id.image_view);
    }
}

}