购物车详解之适配器and监听

package zjj.bwie.com.shopcar.adapter;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.TextView;

import com.jcodecraeer.xrecyclerview.XRecyclerView;

import java.util.List;

import zjj.bwie.com.shopcar.R;
import zjj.bwie.com.shopcar.bean.ShopBean;

public class ShopAdapter extends XRecyclerView.Adapter<ShopAdapter.MyViewHolder> implements ShopsCheckedlistener {

    private Context context;
    private List<ShopBean.DataBean> list;
    private ShopCheckedListenter shopCheckedListenter;

    public void setShopCheckedListenter(ShopCheckedListenter shopCheckedListenter) {
        this.shopCheckedListenter = shopCheckedListenter;
    }

    public ShopAdapter(Context context, List<ShopBean.DataBean> list) {
        this.context = context;
        this.list = list;
    }

    public void addDataPage(List<ShopBean.DataBean> list2) {
        if(list!=null){
            list.addAll(list2);
            notifyDataSetChanged();
        }
    }


    @NonNull
    @Override
    public ShopAdapter.MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.shopitem_layout, parent,false);
        MyViewHolder holder = new MyViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(@NonNull final ShopAdapter.MyViewHolder holder, int position) {
        final ShopBean.DataBean dataBean = list.get(position);
        holder.tv_shopName.setText(dataBean.getSellerName());
        holder.recycle_view.setLayoutManager(new LinearLayoutManager(context));
         ShopsAdapter shopsAdapter = new ShopsAdapter(context, dataBean.getList());
        holder.recycle_view.setAdapter(shopsAdapter);

        shopsAdapter.setShopsCheckedlistener(this);

        holder.cbox_shop.setChecked(dataBean.isSelected());//根据bean对象的ischecked属性，动态设置选中状态
        holder.cbox_shop.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(holder.cbox_shop.isChecked()){
                    dataBean.setSelected(true);
                    for (int i = 0; i < dataBean.getList().size(); i++) {
                        dataBean.getList().get(i).setSelected(true);
                    }
                }else {
                    dataBean.setSelected(false);
                    for (int i = 0; i < dataBean.getList().size(); i++) {
                        dataBean.getList().get(i).setSelected(false);
                    }
                }
                notifyDataSetChanged();

                if (shopCheckedListenter!=null){
                    shopCheckedListenter.notifyCbox();
                }
            }
        });

        for (int i = 0; i < dataBean.getList().size(); i++) {
            if(dataBean.getList().get(i).isSelected()){
                holder.cbox_shop.setChecked(true);
            }else {
                holder.cbox_shop.setChecked(false);
                return;
            }
        }
        if (shopCheckedListenter!=null){
            shopCheckedListenter.notifyCbox();
        }
    }

    @Override
    public int getItemCount() {
        return list.size() == 0 ?0:list.size();
    }



    //暴露修改之后的最新的集合数据
    public List<ShopBean.DataBean>  getList(){
        return list;
    }

    @Override
    public void notifyParent() {
        notifyDataSetChanged();
        if (shopCheckedListenter!=null){
            shopCheckedListenter.notifyCbox();
        }
    }


    public class MyViewHolder extends RecyclerView.ViewHolder {

        private final RecyclerView recycle_view;
        private final CheckBox cbox_shop;
        private final TextView tv_shopName;

        public MyViewHolder(View itemView) {
            super(itemView);
            tv_shopName = itemView.findViewById(R.id.tv_shopName);
            cbox_shop = itemView.findViewById(R.id.cbox_shop);
            recycle_view = itemView.findViewById(R.id.recycle_view);
        }
    }
}
/////////////////////////////////////////////////////////shopsadapter
package zjj.bwie.com.shopcar.adapter;

import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;

import java.util.List;

import zjj.bwie.com.shopcar.R;
import zjj.bwie.com.shopcar.bean.ShopBean;
import zjj.bwie.com.shopcar.view.MyJiaJianView;

public class ShopsAdapter extends RecyclerView.Adapter<ShopsAdapter.MyViewHolder> {

    private Context context;
    private List<ShopBean.DataBean.ListBean> shopslist;

    private ShopsCheckedlistener shopsCheckedlistener;//接口回调引用
    //暴露给调用者进行回调 对接口进行初始化
    public void setShopsCheckedlistener(ShopsCheckedlistener shopsCheckedlistener) {
        this.shopsCheckedlistener = shopsCheckedlistener;
    }



    public ShopsAdapter(Context context, List<ShopBean.DataBean.ListBean> shopslist) {
        this.context = context;
        this.shopslist = shopslist;
    }

    @NonNull
    @Override
    public ShopsAdapter.MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.shopsitem_layout, parent, false);
        MyViewHolder holder = new MyViewHolder(view);
        return holder;
    }

    @Override
    public void onBindViewHolder(@NonNull final ShopsAdapter.MyViewHolder holder, final int position) {
        final ShopBean.DataBean.ListBean listBean = shopslist.get(position);
        holder.tv_title.setText(listBean.getTitle());
        holder.tv_price.setText("优惠价：￥"+listBean.getBargainPrice());
        String[] split = listBean.getImages().split("\\|");
        if(split!=null && split.length>0){
            Glide.with(context).load(split[0]).into(holder.img);
        }else {
            holder.img.setImageResource(R.mipmap.ic_launcher);
        }

        holder.cbox_shops.setChecked(listBean.isSelected());//根据bean对象的ischecked属性，动态设置选中状态
        holder.cbox_shops.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(holder.cbox_shops.isChecked()){
                    listBean.setSelected(true);
                }else {
                    listBean.setSelected(false);
                }
                if (shopsCheckedlistener!=null){
                    shopsCheckedlistener.notifyParent();//通知一级列表适配器刷新
                }

            }
        });

        holder.jiajianqi.setNum(listBean.getShopsnum());
        holder.jiajianqi.setJiaJianListenter(new MyJiaJianView.JiaJianListenter() {
            @Override
            public void getNum(int num) {
                listBean.setShopsnum(num);
                if(shopsCheckedlistener!=null){
                    shopsCheckedlistener.notifyParent();//通知一级列表适配器刷新
                }
            }
        });
    }

    @Override
    public int getItemCount() {
        return shopslist.size() ==0?0:shopslist.size();
    }

    public class MyViewHolder extends RecyclerView.ViewHolder {

        private final CheckBox cbox_shops;
        private final ImageView img;
        private final TextView tv_price;
        private final TextView tv_title;
        private final MyJiaJianView jiajianqi;

        public MyViewHolder(View itemView) {
            super(itemView);
            cbox_shops = itemView.findViewById(R.id.cbox_shops);
            img = itemView.findViewById(R.id.img);
            tv_price = itemView.findViewById(R.id.tv_price);
            tv_title = itemView.findViewById(R.id.tv_title);
            jiajianqi = itemView.findViewById(R.id.jiajianqi);
        }
    }
}

////////////////////////////////////////////////////////////////////ShopCheckedListenter
public interface ShopCheckedListenter {
    void notifyCbox();
}
/////////////////////////////////////////////////////////////////ShopsCheckedlistener
public interface ShopsCheckedlistener {
    void notifyParent();//通知父adapter刷新适配器
}