是否应在OnBindViewHolder（）方法中设置ReyclerView的Item的OnClickListener？

Question

I have a RecyclerView and I update it's items 30 times each second. Now my question is :

If I set OnClickListner of each item inside onBindViewHolder(final ViewHolder holder, int position) method, 30 View.OnClickListner object will be created each second. Will this cause a problem or not? Thanks.

  @Override
  public void onBindViewHolder(final ViewHolder holder, int position) {

    holder.root.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
        //do something
      }
    });
  }

Answer 1

Here is a good resource:

Recyclerview-listener

public interface OnItemClickListener {
    void onItemClick(ContentItem item);
}

public void bind(final ContentItem item, final OnItemClickListener listener) {
    ...
    itemView.setOnClickListener(new View.OnClickListener() {
        @Override public void onClick(View v) {
            listener.onItemClick(item);
        }
    });
}

Answer 2

the approach to implement View.OnClickListener for RetcyerView's Items in this article is very good. It also manages item selection.

Answer 3

Yes you can. But it is not good practice. You can set your click listener inside ViewHolder And you have getAdapterPosition() that will help you to get current clicked item. (May be you need to pass item or something else). More more information you can see the blog

Answer 4

u can use onBindViewHolder to set clickable and it work

like this case

@Override
public void onBindViewHolder(MyViewHolder holder, final int position) {

    holder.cardView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(mContext, "Clicked", Toast.LENGTH_SHORT).show();
            Intent intent = new Intent(mContext, NextModel.class);
            mContext.startActivity(intent);
        }
    });
}