setOnClickListener更改recyclerview中的每七个视图 [英] setOnClickListener changes every seventh view in recyclerview

问题描述

当我在Recyclerview中单击一个项目时，每七个项目都会产生效果.

when i click an item in Recyclerview every seventh item gets the effect.

onBindViewHolder:

onBindViewHolder:

public void onBindViewHolder(final ViewHolder holder, final int position) {
        holder.channelName.setText(list.get(position).getChannnelName());
        holder.linearLayoutChannelName.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                view.setBackgroundColor(Color.parseColor("#93bcff"));
            }
        });
    }
    public class ViewHolder extends RecyclerView.ViewHolder {
        LinearLayout linearLayoutChannelName;
        TextView channelName;
        public ViewHolder(View itemView) {
            super(itemView);
            channelName = itemView.findViewById(R.id.tv_channel_name);
            linearLayoutChannelName = itemView.findViewById(R.id.ll_channelname);
        }
    }

当我单击一个项目时，每七个项目都会更改其背景颜色，并且会重复执行列表中的每个第七项目，即使在列表中滚动时，背景色也会消失.

when i click an item every seventh item changes its backgroung color,and it repeats every seventh item in the list, and even when scrolling across the list the background color dissapears.

https://i.stack.imgur.com/oq2sb.jpg

https://i.stack.imgur.com/rOzQg.jpg

推荐答案

不要在onBindViewHolder中使用onClickListener，而是在onCreateViewHolder中设置它，并创建一个成员变量来设置所选项目.您可以这样做.

Don't use onClickListener in onBindViewHolder instead set it in onCreateViewHolder and create a member variable to set the selected item. You can do it like this.

int mSelectedItemPosition = -1;

//在您的createViewHolder方法中

// in your createViewHolder method

holder.linearLayoutChannelName.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View view){
                int position = holder.getAdapterPosition();
                if (position != RecyclerView.NO_POSITION) {
                  mSelectedItemPosition = position;
                  notifyItemRangeChanged(0, yourList.size());
                }
            }
        });

然后在绑定视图持有人中检查所选项目的位置并设置背景颜色

And in your bind view holder check selected item position and set the background color

if(mSelectedItemPosition == position){
  view.setBackgroundColor(Color.parseColor("#yourColor"))
}else{
  view.setBackgroundColor(Color.parseColor("originalColor"));
}

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