shopcar

因为我们是本地购物车

所以先建立本地的bean类

public class ShopLiBean {
  public String sellerName;
    public List<DataBean> list;
    public ShopLiBean(String sellerName,List<DataBean> list){
        this.sellerName=sellerName;
        this.list=list;
    }
 public static class DataBean{
       public String producrName;
        public double price;
        public boolean isSelect;
        public int text_sum;
        public DataBean(String producrName,double price,boolean isSelect,int text_sum){
            this.producrName=producrName;
            this.price=price;
            this.isSelect=isSelect;
            this.text_sum=text_sum;
        }
 }
}

Main中代码

package test.bwie.myapplication;

import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.CheckBox;
import android.widget.TextView;

import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;

import test.bwie.myapplication.bean.ShopLiBean;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private RecyclerView recycle;
    private List<ShopLiBean> list;
    private CheckBox tv_quanxuan;
    private ShopAdapter shopAdapter;
    private double sumPrice;
    private int sumNum;
    private TextView tv_sum;
    private TextView sum;
    private DecimalFormat decimalFormat;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        inteDate();
        decimalFormat = new DecimalFormat("#0.00");
        recycle.setLayoutManager(new LinearLayoutManager(this));
        shopAdapter = new ShopAdapter(this,list);
        recycle.setAdapter(shopAdapter);
        shopAdapter.setOnItemChickListener(new ShopAdapter.OnItemChickListener() {
           @Override
           public void shopinter(int a, int b) {
               if (list.get(a).list.get(b).isSelect){
                   sumPrice=sumPrice+(list.get(a).list.get(b).price)*(list.get(a).list.get(b).text_sum);
                   sumNum=sumNum+list.get(a).list.get(b).text_sum;
               }else {
                   sumPrice=sumPrice-(list.get(a).list.get(b).price)*(list.get(a).list.get(b).text_sum);
                   sumNum= sumNum-list.get(a).list.get(b).text_sum;
               }
               tv_sum.setText(decimalFormat.format(sumPrice));
               sum.setText("去结算(" + sumNum + ")");
               isCheckAllCheck();
           }
        });
    }
    private void inteDate() {
        list=new ArrayList<>();
        for (int i = 0; i <5 ; i++) {
             List<ShopLiBean.DataBean> dataBean=new ArrayList<>();
            for (int j = 0; j <3 ; j++) {
                dataBean.add(new ShopLiBean.DataBean("商品"+j,10*(j+1),false,1));
            }
            list.add(new ShopLiBean("商家"+i,dataBean));
        }
    }
  private void  isCheckAllCheck(){
      boolean flag=true;
      for (ShopLiBean shopLiBean : list) {
          for (ShopLiBean.DataBean dataBean : shopLiBean.list) {
              if (!dataBean.isSelect){
                  flag=false;
                  break;
              }
          }
      }
    tv_quanxuan.setChecked(flag);
  }
    private void initView() {
        recycle = (RecyclerView) findViewById(R.id.shopcar_recycle);
        tv_quanxuan = (CheckBox) findViewById(R.id.checkbox_quanxuan);
        tv_quanxuan.setOnClickListener(this);
        tv_sum = (TextView) findViewById(R.id.tv_sum);
        sum = (TextView) findViewById(R.id.jiesuan_button);
    }

    @Override
    public void onClick(View view) {
        selectall();
    }
    private void selectall() {
        for (ShopLiBean shopLiBean : list) {
            for (ShopLiBean.DataBean dataBean : shopLiBean.list) {
                if (tv_quanxuan.isChecked()){
                    if (!dataBean.isSelect) {
                        dataBean.isSelect = true;
                        sumPrice=sumPrice+dataBean.price*dataBean.text_sum;
                        sumNum=sumNum+dataBean.text_sum;
                    }
                    }else {
                        if (dataBean.isSelect){
                            dataBean.isSelect=false;
                            sumPrice=sumPrice-dataBean.price*dataBean.text_sum;
                            sumNum=sumNum-dataBean.text_sum;
                        }
                    }
                }
            }

        shopAdapter.notifyDataSetChanged();
        tv_sum.setText(decimalFormat.format(sumPrice));
        sum.setText("去结算(" + sumNum + ")");
    }
}

第一层adapter

package test.bwie.myapplication;

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

import java.util.List;

import test.bwie.myapplication.bean.ShopLiBean;

/**
 * Created by 蒋六六 on 2017/10/25.
 */

public class ShopAdapter extends RecyclerView.Adapter<ShopAdapter.ShopHolder> {
    private Context content;
    private List<ShopLiBean> list;
    private OnItemChickListener onItemChickListener;
    public void setOnItemChickListener(OnItemChickListener onItemChickListener) {
        this.onItemChickListener = onItemChickListener;
    }
    public ShopAdapter(Context context, List<ShopLiBean> list) {
        this.content=context;
        this.list=list;
    }

    @Override
    public ShopHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View in = View.inflate(content, R.layout.shapcar1_item, null);
        ShopHolder shop=new ShopHolder(in);
        return shop;
    }
    @Override
    public void onBindViewHolder(final ShopHolder holder, final int position) {
        final ShopLiBean shopLiBean = list.get(position);
         ischeckshop(holder,shopLiBean);
        holder.tv_shophome.setText(shopLiBean.sellerName);
        holder.shop_recycle.setLayoutManager(new LinearLayoutManager(content));
      final   ShopliAdapter shopliadapter=new ShopliAdapter(content,shopLiBean.list);
        holder.shop_recycle.setAdapter(shopliadapter);

       if (onItemChickListener!=null){
           shopliadapter.setOnItemCheck(new ShopliAdapter.OnItemCheckListener() {
               @Override
               public void ok(int pos) {
                   onItemChickListener.shopinter(holder.getLayoutPosition(),pos);
                   ischeckshop(holder,shopLiBean);
               }
           });
           holder.ck_shophome.setOnClickListener(new View.OnClickListener() {
               @Override
               public void onClick(View view) {
                   for (ShopLiBean.DataBean dataBean : shopLiBean.list) {
                       if (holder.ck_shophome.isChecked()){
                           dataBean.isSelect=true;
                       }else {
                           dataBean.isSelect=false;
                       }
                   }
                   shopliadapter.notifyDataSetChanged();
               }
           });
       }
    }
    private void ischeckshop(ShopHolder holder, ShopLiBean shopLiBean) {
        boolean f=true;
        for (ShopLiBean.DataBean dataBean : shopLiBean.list) {
            if (!dataBean.isSelect){
                f=false;
               break;
            }
        }
     holder.ck_shophome.setChecked(f);
    }
    @Override
    public int getItemCount() {
        return list.size();
    }
    class ShopHolder extends RecyclerView.ViewHolder{
        private CheckBox ck_shophome;
        private TextView tv_shophome;
        private RecyclerView shop_recycle;
        public ShopHolder(View itemView) {
            super(itemView);
            ck_shophome = itemView.findViewById(R.id.ck_shophome);
            shop_recycle= itemView.findViewById(R.id.shop_li_recy);
            tv_shophome = itemView.findViewById(R.id.ck_shophome);
        }
    }
    public interface OnItemChickListener {
        void shopinter(int a, int b);
    }
}

第二层adapter

package test.bwie.myapplication;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;

import java.text.DecimalFormat;
import java.util.List;

import test.bwie.myapplication.bean.ShopLiBean;
import test.bwie.myapplication.view.AddSubView;


public class ShopliAdapter extends RecyclerView.Adapter<ShopliAdapter.AAAAA> {
    private List<ShopLiBean.DataBean> list;
    private Context context;
    public OnItemCheckListener onItemCheckListener;
    public void setOnItemCheck(OnItemCheckListener onItemCheckListener){
        this.onItemCheckListener=onItemCheckListener;
    }
    public  ShopliAdapter(Context content, List<ShopLiBean.DataBean> list) {
        this.list=list;
        this.context=content;
    }

    @Override
    public AAAAA onCreateViewHolder(ViewGroup parent, int viewType) {
        View inflate = View.inflate(context, R.layout.shopcar2_item, null);
        AAAAA adap=new AAAAA(inflate);
        return adap;
    }

    @Override
    public void onBindViewHolder(final AAAAA holder, final int position) {
        final ShopLiBean.DataBean dataBean = list.get(position);
        if (dataBean.isSelect){
            holder.ck.setChecked(true);
        }else {
            holder.ck.setChecked(false);
        }
        holder.num.setNum(list.get(position).text_sum+"");
        holder.tv_title.setText(dataBean.producrName);
        DecimalFormat decima=new DecimalFormat("#0.00");
        holder.tv.setText(decima.format(dataBean.price));
        if(onItemCheckListener!=null){
            holder.ck.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                @Override
                public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
                     dataBean.isSelect=b;
                    onItemCheckListener.ok(holder.getLayoutPosition());
                }
            });
        }
        //自定义控件的赋值
        holder.num.setAddSubClickListener(new AddSubView.AddSubClickListener() {
            @Override
            public void addClickListener(int n) {
                  list.get(position).text_sum=n;
            }
        });
    }
    @Override
    public int getItemCount() {
        return list.size();
    }
    class AAAAA extends RecyclerView.ViewHolder{
        private CheckBox ck;
        private TextView tv;
        private TextView tv_title;
        private AddSubView num;
        public AAAAA(View itemView) {
            super(itemView);
            tv_title = itemView.findViewById(R.id.tv_jianjie);
            ck = itemView.findViewById(R.id.ck_gt);
            tv = itemView.findViewById(R.id.tv_shop_price);
            num = itemView.findViewById(R.id.nnn);
        }


    }

    public interface OnItemCheckListener{
        void ok(int pos);
    }

}

//灰色背景边框

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle"
    >
    <solid android:color="#fff"></solid>
<stroke android:color="#666" android:width="1px"></stroke>
    <size android:width="10dp" android:height="10dp"></size>
</shape>
//自定义加减号

package test.bwie.myapplication.view;

import android.content.Context;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.TextView;

import test.bwie.myapplication.R;


public class AddSubView extends LinearLayout implements View.OnClickListener {
    private Context context;
    private TextView mTvSub;
    private TextView mTvNum;
    private TextView mTvAdd;
    private AddSubClickListener addSubClickListener;
    public AddSubView(Context context) {
        this(context, null);
    }
    public AddSubView(Context context, @Nullable AttributeSet attrs) {
        this(context, attrs, 0);
    }
    public AddSubView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        this.context = context;
        initView();

    }
    private void initView() {
        View view = View.inflate(context, R.layout.add_sub_view_layout, this);
        mTvSub = (TextView) view.findViewById(R.id.tv_sub);
        mTvNum = (TextView) view.findViewById(R.id.tv_num);
        mTvAdd = (TextView) view.findViewById(R.id.tv_add);
        mTvSub.setOnClickListener(this);
        mTvAdd.setOnClickListener(this);
    }
    public void setAddSubClickListener(AddSubClickListener addSubClickListener) {
        this.addSubClickListener = addSubClickListener;
    }
    public void setNum(String num) {
        int i = Integer.parseInt(num);
        if (i > 9) {
            mTvAdd.setEnabled(false);
        } else if (i < 2) {
            mTvSub.setEnabled(false);
        }
        mTvNum.setText(num);
    }
    public String getNum() {
        return mTvNum.getText().toString();
    }
    @Override
    public void onClick(View view) {
        if (addSubClickListener != null){
            int num = Integer.parseInt(mTvNum.getText().toString());
            switch (view.getId()){
                case R.id.tv_add:
                    num++;
                    if (!mTvSub.isEnabled()) {
                        mTvSub.setEnabled(true);
                    }
                    if (num > 9) {
                        mTvAdd.setEnabled(false);
                    }
                    break;
                case R.id.tv_sub:
                    num--;
                    if (!mTvAdd.isEnabled()) {
                        mTvAdd.setEnabled(true);
                    }
                    if (num < 2) {
                        mTvSub.setEnabled(false);
                    }
                    break;
            }
            addSubClickListener.addClickListener(num);
            mTvNum.setText(Integer.toString(num));
        }
    }

    public interface AddSubClickListener {
        void addClickListener(int num);
    }

}
//xmml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center_vertical"
    android:orientation="horizontal">

    <TextView
        android:id="@+id/tv_sub"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:gravity="center"
        android:background="@drawable/add_sub_view_bg"
        android:text="-" />


    <TextView
        android:id="@+id/tv_num"
        android:layout_width="wrap_content"
        android:layout_height="20dp"
        android:layout_weight="1"
        android:inputType="number"
        android:gravity="center"
        android:background="@drawable/add_sub_view_bg"
        android:text="1" />



    <TextView
        android:background="@drawable/add_sub_view_bg"
        android:id="@+id/tv_add"
        android:layout_width="20dp"
        android:gravity="center"
        android:layout_height="20dp"

        android:text="+" />
    
</LinearLayout>