Recycleview checkbox 复用出现混乱解决方法

今天在做项目的一个我的收藏页面时要实现这么一个效果：

每个item 前面都有一个checkbox ，主要布局是recycleview 。当我们选中某项时，继续往下滑动下面某个的checkbox也会变成选中状态。

解决方法一比较暴力 viewHolder.setIsRecyclable(false);

这样viewholder就不进行复用，也不存在checkbox 混乱选中的问题了，但是 你滑动的时候卡的要死。

第二种就是在获取到的bean中设置一个标志位，但是需要修改bean 。虽然只是加个字段的问题，但是不建议。

第三种就是用个辅助list记录选中的item. 这还不够，还要配合viewholder的settag（）.

1.在绑定view的时候

viewHolder.checkBox.setTag(new Integer(position));//设置tag 否则划回来时选中消失

    if (checkPositionlist != null) {
        ((MyViewHolder) holder).checkBox.setChecked((checkPositionlist.contains(new Integer(position)) ? true : false));
    } else {
        ((MyViewHolder) holder).checkBox.setChecked(false);
    }

2.选中监听事件：

 viewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                MyCollectionBaseBean baseBean = data.getFavoritesList().get(position);

                if (isChecked) {
                    //Log.e("fangchao 1", viewHolder.checkBox.getTag() + "");
                    if (!checkPositionlist.contains(viewHolder.checkBox.getTag())) {//这句要有 ，否则不复用了，但是你再滑动回去的时候，都成了为选中。这是因为你的item滑出可视范围时，就会触发oncheckchange事件，所以用第一步绑定的tag进行二次判断。防止选中的丢失
                        checkeddata.add(baseBean);
                        checkPositionlist.add(new Integer(position));
                    }
                } else {
                    //Log.e("fangchao 2", viewHolder.checkBox.getTag() + "");
                    if (checkPositionlist.contains(viewHolder.checkBox.getTag()))//这句同上，二次判断{
                        checkeddata.remove(baseBean);
                        checkPositionlist.remove(new Integer(position));
                    }
                }
            }
        });

完整代码，自己摘着看：

/**
 * Created By Fangchao On 2015/3/5
 */
public class CollectionAdapter extends FooterAdapter {
    private MyCollectionListBean data;// 元数据
    private List<MyCollectionBaseBean> checkeddata = new ArrayList<>();// 选中的数据
    private ImageLoader mImageLoader;
    private List<Integer> checkPositionlist;

    public CollectionAdapter(MyCollectionListBean data) {
        this.data = data;
        mImageLoader = new ImageLoader(MyApplication.getInstance()
                .getRequestQueue(), BitmapCache.getInstance());
        checkPositionlist = new ArrayList<>();
    }

    public class MyViewHolder extends RecyclerView.ViewHolder {
        public TextView txt_onsale, txt_mj, txt_present, goodsname, goods_describe;
        public TextView price, mark_price, commentsnums;
        CheckBox checkBox;
        NetworkImageView goods_img;
        public View v;

        public MyViewHolder(View v) {
            super(v);
            this.v = v;
            txt_onsale = (TextView) v.findViewById(R.id.txt_onsale);
            txt_mj = (TextView) v.findViewById(R.id.txt_mj);
            txt_present = (TextView) v.findViewById(R.id.txt_present);
            goods_describe = (TextView) v.findViewById(R.id.tv_production_describ);
            goodsname = (TextView) v.findViewById(R.id.tv_goods_name);
            price = (TextView) v.findViewById(R.id.tv_goods_price);
            mark_price = (TextView) v.findViewById(R.id.tv_goods_markprice);
            commentsnums = (TextView) v.findViewById(R.id.tv_goods_commentsnums);
            checkBox = (CheckBox) v.findViewById(R.id.collection_cb);
            goods_img = (NetworkImageView) v.findViewById(R.id.mycollection_item_image);

        }

    }

    @Override
    public boolean useFooter() {
        return true;
    }

    @Override
    public RecyclerView.ViewHolder onCreateContentItemViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.item_collection, parent, false);

        MyViewHolder vh = new MyViewHolder(v);
        return vh;
    }

    @Override
    public void onBindContentItemView(RecyclerView.ViewHolder holder, final int position) {
        MyViewHolder viewHolder = (MyViewHolder) holder;
        // viewHolder.setIsRecyclable(false);
        viewHolder.goodsname.setText(data.getFavoritesList().get(position).getGoods().getGoodsName());
        if (StringUtils.isBlank(data.getFavoritesList().get(position).getGoods().getGoodsSlogan())) {
            viewHolder.goods_describe.setVisibility(View.GONE);
        } else {
            viewHolder.goods_describe.setVisibility(View.VISIBLE);
            viewHolder.goods_describe.setText(data.getFavoritesList().get(position).getGoods().getGoodsSlogan());
        }
        viewHolder.price.setText(PriceTools.formatStr(data.getFavoritesList().get(position).getGoods().getShopPrice()));
        viewHolder.price.setTextColor(Color.parseColor("#E5004B"));
        viewHolder.mark_price.setText(PriceTools.formatStr(data.getFavoritesList().get(position).getGoods().getMarketPrice()));
        viewHolder.mark_price.setBackgroundResource(0);
        viewHolder.mark_price.getPaint().setFlags(
                Paint.STRIKE_THRU_TEXT_FLAG | Paint.ANTI_ALIAS_FLAG); // 设置中划线并加清晰
        viewHolder.commentsnums.setText(data.getFavoritesList().get(position).getGoods().getCommentCount());
        viewHolder.checkBox.setTag(new Integer(position));//设置tag 否则划回来时选中消失
        //checkbox  复用问题
        if (checkPositionlist != null) {
            ((MyViewHolder) holder).checkBox.setChecked((checkPositionlist.contains(new Integer(position)) ? true : false));
        } else {
            ((MyViewHolder) holder).checkBox.setChecked(false);
        }
        //Log.e("ffff",position+"");
        viewHolder.goods_img.setDefaultImageResId(R.drawable.item_default_img);
        viewHolder.goods_img.setErrorImageResId(R.drawable.item_default_img_err);
        viewHolder.goods_img.setImageUrl(data.getFavoritesList().get(position).getGoods().getImgFile(), mImageLoader);
        if (data.getFavoritesList().get(position).getGoods().getIsOnSale().equals("false")) {
            //下架
            viewHolder.price.setText("本商品已经下架");
            viewHolder.price.setTextColor(Color.GRAY);
            viewHolder.mark_price.setText("");
        } else if (data.getFavoritesList().get(position).getGoods().isIsNoStock()) {
            //缺货
            viewHolder.mark_price.setBackgroundResource(R.drawable.ticket_is_outof_date_bg);
            viewHolder.mark_price.setText(" 缺货 ");
            viewHolder.price.setTextColor(Color.GRAY);
            viewHolder.mark_price.getPaint().setFlags(0);
        }
        //cb 的选中事件
        onchecked(viewHolder, position);

    }

    private void onchecked(final MyViewHolder viewHolder, final int position) {

        viewHolder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                MyCollectionBaseBean baseBean = data.getFavoritesList().get(position);

                if (isChecked) {
                    //Log.e("fcccc 1", viewHolder.checkBox.getTag() + "");
                    if (!checkPositionlist.contains(viewHolder.checkBox.getTag())) {
                        checkeddata.add(baseBean);
                        checkPositionlist.add(new Integer(position));
                    }
                } else {
                    //Log.e("fcccc 2", viewHolder.checkBox.getTag() + "");
                    if (checkPositionlist.contains(viewHolder.checkBox.getTag())) {
                        checkeddata.remove(baseBean);
                        checkPositionlist.remove(new Integer(position));
                    }
                }
            }
        });
    }

    @Override
    public int getContentItemCount() {
        if (data != null)
            return data.getFavoritesList().size();
        else return 0;
    }

    @Override
    public int getContentItemType(int position) {
        return 0;
    }

    public void getdata(MycheckListener listener) {
        listener.getcheckeddata(checkeddata);
    }

    public interface MycheckListener {
        void getcheckeddata(List<MyCollectionBaseBean> listBean);
    }
}