main_activity.xml布局
<?xml version="1.0" encoding="utf-8"?>
? ? xmlns:app="http://schemas.android.com/apk/res-auto"
? ? xmlns:tools="http://schemas.android.com/tools"
? ? android:layout_width="match_parent"
? ? android:layout_height="match_parent"
? ? android:orientation="vertical"
? ? tools:context="com.umeng.soexample.shopcat01.MainActivity">
? ? android:id="@+id/elc_show_main"
? ? android:layout_width="match_parent"
? ? android:layout_height="0dp"
? ? android:layout_weight="1"
? ? android:background="#fff"
? ? >
? ? ? ? android:layout_width="match_parent"
? ? ? ? android:layout_height="60dp"
? ? ? ? android:gravity="center_vertical"
? ? ? ? android:orientation="horizontal"
? ? ? ? >
? ? ? ? ? ? android:id="@+id/cb_allCheck_main"
? ? ? ? ? ? android:layout_width="wrap_content"
? ? ? ? ? ? android:layout_height="wrap_content" />
? ? ? ? ? ? android:layout_width="wrap_content"
? ? ? ? ? ? android:layout_height="wrap_content"
? ? ? ? ? ? android:text="全選"
? ? ? ? ? ? android:textColor="#000"
? ? ? ? ? ? />
? ? ? ? ? ? android:id="@+id/btn_allprice_main"
? ? ? ? ? ? android:layout_width="0dp"
? ? ? ? ? ? android:layout_height="wrap_content"
? ? ? ? ? ? android:layout_marginLeft="10dp"
? ? ? ? ? ? android:layout_weight="1"
? ? ? ? ? ? android:text="價格"
? ? ? ? ? ? android:textColor="@color/colorAccent"
? ? ? ? ? ? android:textSize="20sp"
? ? ? ? ? ? />
? ? ? ? ? ? android:id="@+id/btn_allNumber_main"
? ? ? ? ? ? android:layout_width="120dp"
? ? ? ? ? ? android:layout_height="wrap_content"
? ? ? ? ? ? android:text="去結算(0)"
? ? ? ? ? ? />
mainactivity頁面
package com.umeng.soexample.shopcat01;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.ExpandableListView;
import android.widget.TextView;
import com.google.gson.Gson;
import com.umeng.soexample.shopcat01.adapter.MyAdapter;
import com.umeng.soexample.shopcat01.bean.CartInfo;
import java.io.IOException;
import java.util.List;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
public class MainActivityextends AppCompatActivityimplements View.OnClickListener{
Stringurl ="http://www.zhaoapi.cn/product/getCarts?uid=71";
private ExpandableListViewelc_show_main;
private CheckBoxcb_allCheck_main;
private TextViewbtn_allPrice_main;
private Buttonbtn_allNumber_main;
private MyAdaptermyAdapter;
@Override
? ? protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initData();
}
private void initData() {
//得到okhttp
? ? ? ? OkHttpClient okHttpClient =new OkHttpClient.Builder().build();
Request request =new Request.Builder().url(url).build();
okHttpClient.newCall(request).enqueue(new Callback() {
@Override
? ? ? ? ? ? public void onFailure(Call call, IOException e) {
}
@Override
? ? ? ? ? ? public void onResponse(final Call call, Response response)throws IOException {
final String string = response.body().string();
runOnUiThread(new Runnable() {
private ListsellerData;
@Override
? ? ? ? ? ? ? ? ? ? public void run() {
Gson gson =new Gson();
CartInfo cartInfo = gson.fromJson(string, CartInfo.class);
sellerData = cartInfo.getData();
//創建適配
//創建適配
? ? ? ? ? ? ? ? ? ? ? ? myAdapter =new MyAdapter(sellerData,MainActivity.this);
//調用適配器的借口 來實現回電數據
? ? ? ? ? ? ? ? ? ? ? ? myAdapter.setOnCartListChangeListener(new MyAdapter.OnCartListChangeListener() {
@Override
? ? ? ? ? ? ? ? ? ? ? ? ? ? public void SellerSelectedChange(int groupPosition) {
//先得到 checkbox
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? boolean b =myAdapter.isCurrentSellerAllProductSelected(groupPosition);
//改變所有當前商家的選中狀態
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? myAdapter.changeCurrentSellerAllProductSelected(groupPosition,!b);
myAdapter.notifyDataSetChanged();
refreshAllSelectedAndTotalPriceAndTotalNumber();
}
@Override
? ? ? ? ? ? ? ? ? ? ? ? ? ? public void changeCurrentProductSelected(int groupPosition,int childPosition) {
myAdapter.changeCurrentProductSelected(groupPosition,childPosition);
myAdapter.notifyDataSetChanged();
refreshAllSelectedAndTotalPriceAndTotalNumber();
}
@Override
? ? ? ? ? ? ? ? ? ? ? ? ? ? public void ProductNumberChange(int groupPosition,int childPosition,int number) {
myAdapter.changeCurrentProductNumber(groupPosition,childPosition,number);
myAdapter.notifyDataSetChanged();
//刷新底部的方法
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? refreshAllSelectedAndTotalPriceAndTotalNumber();
}
});
elc_show_main.setAdapter(myAdapter);
//
? ? ? ? ? ? ? ? ? ? ? ? for (int i =0; i
elc_show_main.expandGroup(i);
}
}
});
}
});
}
private void initView() {
elc_show_main = (ExpandableListView) findViewById(R.id.elc_show_main);
cb_allCheck_main = (CheckBox) findViewById(R.id.cb_allCheck_main);
btn_allPrice_main = (TextView) findViewById(R.id.btn_allprice_main);
btn_allNumber_main = (Button) findViewById(R.id.btn_allNumber_main);
cb_allCheck_main.setOnClickListener(this);
btn_allNumber_main.setOnClickListener(this);
}
private void? refreshAllSelectedAndTotalPriceAndTotalNumber(){
boolean allProductsSelected =myAdapter.isAllProductsSelected();
cb_allCheck_main.setChecked(allProductsSelected);
//計算總金額
? ? ? ? Double totalPrice =myAdapter.calculateTotalPrice();
btn_allPrice_main.setText("總價：￥"+totalPrice);
//計算總數量
? ? ? ? int totalNumber =myAdapter.calculateTotalNumber();
btn_allNumber_main.setText("去結算("+totalNumber+")");
}
@Override
? ? public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_allNumber_main:
break;
case R.id.cb_allCheck_main:
boolean allProductsSelected =myAdapter.isAllProductsSelected();
myAdapter.changeAllProductsSelected(!allProductsSelected);
myAdapter.notifyDataSetChanged();
//刷新底部的方法
? ? ? ? ? ? ? ? refreshAllSelectedAndTotalPriceAndTotalNumber();
break;
}
}
}
MyAdapter頁面
package com.umeng.soexample.shopcat01.adapter;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckBox;
import android.widget.ImageView;
import android.widget.TextView;
import com.bumptech.glide.Glide;
import com.squareup.picasso.Picasso;
import com.umeng.soexample.shopcat01.MyAddSubView;
import com.umeng.soexample.shopcat01.R;
import com.umeng.soexample.shopcat01.bean.CartInfo;
import java.util.List;
/**
* Created by lenovo on 2018-11-20.
*/
public class MyAdapterextends BaseExpandableListAdapter{
ListsellerData;
Contextcontext;
public MyAdapter(List sellerData, Context context) {
this.sellerData = sellerData;
this.context = context;
}
@Override
? ? public int getGroupCount() {
return sellerData.size();
}
@Override
? ? public int getChildrenCount(int groupPosition) {
return sellerData.get(groupPosition).getList().size();
}
@Override
? ? public Object getGroup(int groupPosition) {
return null;
}
@Override
? ? public Object getChild(int groupPosition,int childPosition) {
return null;
}
@Override
? ? public long getGroupId(int groupPosition) {
return 0;
}
@Override
? ? public long getChildId(int groupPosition,int childPosition) {
return 0;
}
@Override
? ? public boolean hasStableIds() {
return false;
}
//設置外層
? ? @Override
? ? public View getGroupView(final int groupPosition,boolean isExpanded, View convertView, ViewGroup parent) {
GroupViewHolder groupViewHolder =null;
if (convertView ==null){
groupViewHolder =new GroupViewHolder();
convertView = View.inflate(context, R.layout.group_view_layout_shopcar,null);
groupViewHolder.cb_group_item = convertView.findViewById(R.id.cb_group_item);
groupViewHolder.tv_title_group = convertView.findViewById(R.id.tv_title_group);
convertView.setTag(groupViewHolder);
}else {
groupViewHolder = (GroupViewHolder) convertView.getTag();
}
//賦值
? ? ? ? CartInfo.DataBean dataBean =sellerData.get(groupPosition);
//商家名稱
? ? ? ? groupViewHolder.tv_title_group.setText(dataBean.getSellerName());
boolean b = isCurrentSellerAllProductSelected(groupPosition);
//商家的checkbox
? ? ? ? groupViewHolder.cb_group_item.setChecked(b);
//點擊checkbox觸發監聽
? ? ? ? groupViewHolder.cb_group_item.setOnClickListener(new View.OnClickListener() {
@Override
? ? ? ? ? ? public void onClick(View v) {
if (onCartListChangeListener !=null) {
onCartListChangeListener.SellerSelectedChange(groupPosition);
}
}
});
return convertView;
}
public void changeCurrentSellerAllProductSelected(int Position,boolean b) {
List list =sellerData.get(Position).getList();
for (int i =0; i < list.size(); i++) {
list.get(i).setSelected(b ?1 :0);
}
}
//用來判斷外層的Selected值 如果是0 不選中 否則選中
? ? public boolean isCurrentSellerAllProductSelected(int position) {
List list =sellerData.get(position).getList();
for (int i =0; i < list.size(); i++) {
if (list.get(i).getSelected() ==0) {
return false;
}
}
return true;
}
//設置子層
? ? @Override
? ? public View getChildView(final int groupPosition,final int childPosition,boolean isLastChild, View convertView, ViewGroup parent) {
ChildViewHolder childViewHolder =null;
if (convertView ==null) {
childViewHolder =new ChildViewHolder();
convertView = View.inflate(context, R.layout.child_view_layout_shopcar,null);
childViewHolder.cb_child_item = convertView.findViewById(R.id.cb_child_item);
childViewHolder.tv_title_child = convertView.findViewById(R.id.tv_title_child);
childViewHolder.tv_price_child = convertView.findViewById(R.id.tv_price_child);
childViewHolder.iv_icon_child= convertView.findViewById(R.id.iv_icon_child);
childViewHolder.add_sub_view_child = convertView.findViewById(R.id.add_sub_view_child);
convertView.setTag(childViewHolder);
}else {
childViewHolder = (ChildViewHolder) convertView.getTag();
}
//賦值
? ? ? ? CartInfo.DataBean.ListBean listBean =sellerData.get(groupPosition).getList().get(childPosition);
//商品名稱
? ? ? ? childViewHolder.tv_title_child.setText(listBean.getTitle());
//商品圖片
? ? ? ? String images = listBean.getImages();
String[] split = images.split("\\|");
Glide.with(context).load(split[0]).into(childViewHolder.iv_icon_child);
//商品價格
? ? ? ? childViewHolder.tv_price_child.setText("￥" + listBean.getPrice());
//商品checkb0x
? ? ? ? childViewHolder.cb_child_item.setChecked(listBean.getSelected() ==1);
childViewHolder.cb_child_item.setOnClickListener(new View.OnClickListener() {
@Override
? ? ? ? ? ? public void onClick(View v) {
onCartListChangeListener.changeCurrentProductSelected(groupPosition,childPosition);
}
});
childViewHolder.add_sub_view_child.setOnNumberChangeListener(new MyAddSubView.OnNumberChangeListener() {
@Override
? ? ? ? ? ? public void OnNumberChange(int number) {
onCartListChangeListener.ProductNumberChange(groupPosition,childPosition, number);
}
});
return convertView;
}
public void changeCurrentProductNumber(int groupPosition,int childPosition,int number) {
CartInfo.DataBean.ListBean listBean =sellerData.get(groupPosition).getList().get(childPosition);
listBean.setNum(number);
}
public void changeCurrentProductSelected(int groupPosition,int childPosition) {
CartInfo.DataBean.ListBean listBean =sellerData.get(groupPosition).getList().get(childPosition);
listBean.setSelected(listBean.getSelected() ==0 ?1 :0);
}
public double calculateTotalPrice() {
double totalPrice =0;
for (int i =0; i
List list =sellerData.get(i).getList();
for (int j =0; j < list.size(); j++) {
//只有選中采取計算
? ? ? ? ? ? ? ? if (list.get(j).getSelected() ==1) {
double price = list.get(j).getPrice();
int num = list.get(j).getNum();
totalPrice += price * num;
}
}
}
return totalPrice;
}
public int calculateTotalNumber() {
int totalNumber =0;
for (int i =0; i
List list =sellerData.get(i).getList();
for (int j =0; j < list.size(); j++) {
//只有選中采取計算
? ? ? ? ? ? ? ? if (list.get(j).getSelected() ==1) {
int num = list.get(j).getNum();
totalNumber += num;
}
}
}
return totalNumber;
}
@Override
? ? public boolean isChildSelectable(int groupPosition,int childPosition) {
return false;
}
public boolean isAllProductsSelected() {
for (int i =0; i
List list =sellerData.get(i).getList();
for (int j =0; j < list.size(); j++) {
if (list.get(j).getSelected() ==0) {
return false;
}
}
}
return true;
}
public void changeAllProductsSelected(boolean b) {
for (int i =0; i
List list =sellerData.get(i).getList();
for (int j =0; j < list.size(); j++) {
list.get(j).setSelected(b ?1 :0);
}
}
}
public static class GroupViewHolder {
public CheckBoxcb_group_item;
public TextViewtv_title_group;
}
public static class ChildViewHolder {
public CheckBoxcb_child_item;
public ImageViewiv_icon_child;
public TextViewtv_title_child;
public TextViewtv_price_child;
public MyAddSubViewadd_sub_view_child;
}
OnCartListChangeListeneronCartListChangeListener;
public void setOnCartListChangeListener(OnCartListChangeListener onCartListChangeListener) {
this.onCartListChangeListener = onCartListChangeListener;
}
public interface OnCartListChangeListener {
void SellerSelectedChange(int groupPosition);
void changeCurrentProductSelected(int groupPosition,int childPosition);
void ProductNumberChange(int groupPosition,int childPosition,int number);
}
}
cartinfo是bean類?實現 接口
add_sub_view.xml布局
<?xml version="1.0" encoding="utf-8"?>
? ? android:layout_width="80dp"
? ? android:layout_height="30dp"
? ? android:layout_gravity="center_vertical"
? ? android:background="#000"
? ? android:orientation="horizontal"
? ? android:padding="2dp"
? ? >
? ? ? ? android:id="@+id/tv_sub_view"
? ? ? ? android:layout_width="0dp"
? ? ? ? android:layout_height="match_parent"
? ? ? ? android:layout_weight="1"
? ? ? ? android:background="#fff"
? ? ? ? android:gravity="center"
? ? ? ? android:text="-"
? ? ? ? android:textColor="#000"
? ? ? ? />
? ? ? ? android:id="@+id/tv_number_view"
? ? ? ? android:layout_width="0dp"
? ? ? ? android:layout_height="match_parent"
? ? ? ? android:layout_marginLeft="2dp"
? ? ? ? android:layout_marginRight="2dp"
? ? ? ? android:layout_weight="1"
? ? ? ? android:background="#fff"
? ? ? ? android:gravity="center"
? ? ? ? android:text="1"
? ? ? ? android:textColor="#000"
? ? ? ? />
? ? ? ? android:id="@+id/tv_add_view"
? ? ? ? android:layout_width="0dp"
? ? ? ? android:layout_height="match_parent"
? ? ? ? android:layout_weight="1"
? ? ? ? android:background="#fff"
? ? ? ? android:gravity="center"
? ? ? ? android:text="+"
? ? ? ? android:textColor="#000"
? ? ? ? />
MyAddSubView自定義控件頁面
package com.umeng.soexample.shopcat01;
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 android.widget.Toast;
/**
* Created by lenovo on 2018-11-20.
*/
public class MyAddSubViewextends LinearLayoutimplements View.OnClickListener{
TextViewtv_sub_view;
TextViewtv_number_view;
TextViewtv_add_view;
private int number =1;
public int getNumber() {
return number;
}
public void setNumber(int number) {
this.number = number;
tv_number_view.setText(number+"");
}
public MyAddSubView(Context context) {
super(context,null);
}
public MyAddSubView(Context context,@Nullable AttributeSet attrs) {
super(context, attrs);
View inflate = View.inflate(context, R.layout.add_sub_view,this);
tv_sub_view = inflate.findViewById(R.id.tv_sub_view);
tv_number_view = inflate.findViewById(R.id.tv_number_view);
tv_add_view = inflate.findViewById(R.id.tv_add_view);
tv_add_view.setOnClickListener(this);
tv_sub_view.setOnClickListener(this);
}
OnNumberChangeListeneronNumberChangeListener;
public void setOnNumberChangeListener(OnNumberChangeListener onNumberChangeListener) {
this.onNumberChangeListener = onNumberChangeListener;
}
@Override
? ? public void onClick(View v) {
switch (v.getId()){
case R.id.tv_sub_view:
if (number>1){
--number;
tv_number_view.setText(number+"");
if (onNumberChangeListener !=null){
onNumberChangeListener.OnNumberChange(number);
}
}else {
Toast.makeText(getContext(),"不能再少啦!", Toast.LENGTH_SHORT).show();
}
break;
case R.id.tv_add_view:
++number;
tv_number_view.setText(number+"");
if (onNumberChangeListener!=null){
onNumberChangeListener.OnNumberChange(number);
}
break;
}
}
public interface OnNumberChangeListener {
void OnNumberChange(int number);
}
}
ground_view_layout_shopcar.xml布局
<?xml version="1.0" encoding="utf-8"?>
? ? android:layout_width="match_parent"
? ? android:layout_height="60dp"
? ? android:gravity="center_vertical"
? ? android:orientation="horizontal"
? ? >
? ? ? ? android:id="@+id/cb_group_item"
? ? ? ? android:layout_width="wrap_content"
? ? ? ? android:layout_height="wrap_content" />
? ? ? ? android:id="@+id/tv_title_group"
? ? ? ? android:layout_width="wrap_content"
? ? ? ? android:layout_height="wrap_content"
? ? ? ? android:layout_marginLeft="10dp"
? ? ? ? android:ellipsize="end"
? ? ? ? android:maxLines="2"
? ? ? ? android:text="標題"
? ? ? ? android:textColor="#000"
? ? ? ? android:textSize="20sp"
? ? ? ? />
child_view_layout_shopcar.xml
<?xml version="1.0" encoding="utf-8"?>
? ? android:layout_width="match_parent"
? ? android:layout_height="120dp"
? ? android:gravity="center_vertical"
? ? android:orientation="horizontal"
? ? >
? ? ? ? android:id="@+id/cb_child_item"
? ? ? ? android:layout_width="wrap_content"
? ? ? ? android:layout_height="wrap_content"
? ? ? ? android:layout_marginLeft="10dp"
? ? ? ? />
? ? ? ? android:id="@+id/iv_icon_child"
? ? ? ? android:layout_width="80dp"
? ? ? ? android:layout_height="80dp"
? ? ? ? android:scaleType="centerCrop"
? ? ? ? android:src="@mipmap/ic_launcher"
? ? ? ? />
? ? ? ? android:layout_width="0dp"
? ? ? ? android:layout_height="match_parent"
? ? ? ? android:layout_marginLeft="10dp"
? ? ? ? android:layout_weight="1"
? ? ? ? android:gravity="center_vertical"
? ? ? ? android:orientation="vertical"
? ? ? ? >
? ? ? ? ? ? android:id="@+id/tv_title_child"
? ? ? ? ? ? android:layout_width="wrap_content"
? ? ? ? ? ? android:layout_height="wrap_content"
? ? ? ? ? ? android:ellipsize="end"
? ? ? ? ? ? android:maxLines="2"
? ? ? ? ? ? android:text="標題"
? ? ? ? ? ? android:textColor="#000"
? ? ? ? ? ? />
? ? ? ? ? ? android:id="@+id/tv_price_child"
? ? ? ? ? ? android:layout_width="wrap_content"
? ? ? ? ? ? android:layout_height="wrap_content"
? ? ? ? ? ? android:text="標題"
? ? ? ? ? ? android:textColor="@color/colorPrimary"
? ? ? ? ? ? android:textSize="20sp"
? ? ? ? ? ? />
? ? android:id="@+id/add_sub_view_child"
? ? android:layout_width="wrap_content"
? ? android:layout_height="wrap_content">
