购物车_简单实现基本功能_MVP框架_京东购物车效果
时间:2019-01-19
本文章向大家介绍购物车_简单实现基本功能_MVP框架_京东购物车效果,主要包括购物车_简单实现基本功能_MVP框架_京东购物车效果使用实例、应用技巧、基本知识点总结和需要注意事项,具有一定的参考价值,需要的朋友可以参考一下。
购物车的基本介绍
购物车相当于现实中超市的购物车,不同的是一个是实体车,一个是虚拟车而已。用户可以在购物网站的不同页面之间跳转,以选购自己喜爱的商品,点击购买时,该商品就自动保存到你的购物车中,重复选购后,最后将选中的所有商品放在购物车中统一到付款台结账,这也是尽量让客户体验到现实生活中购物的感觉。服务器通过追踪每个用户的行动,以保证在结账时每件商品都物有其主。
我这次会把购物车源码给发出来,如果有需要的兄弟直接复制就行
购物车的功能包括以下几项:
1.把商品添加到购物车,即订购
2.删除购物车中已定购的商品
3.修改购物车中某一本图书的订购数量
4.显示购物车中商品清单及数量、价格
5.清空购物车
下面附上一张我自己做的购物车效果图
下面咱们就开始开始入手购物车功能点的实现
(1).先搭建个MVP的框架
(2).布局要清晰,要有逻辑
(3).实现功能点的步骤
(4).最后你要是感觉写的还行,给个赞O(∩_∩)O哈哈~
咱们先把功能点的布局写一下
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/top_bar"
android:layout_width="match_parent"
android:layout_height="48dp"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="48dp"
android:background="@android:color/transparent"
android:orientation="vertical" >
<TextView
android:id="@+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:minHeight="48dp"
android:text="购物车"
android:background="@mipmap/pizhi"
android:textColor="#ff00"
android:textSize="25sp" />
<TextView
android:id="@+id/subtitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_marginRight="12dp"
android:gravity="center"
android:minHeight="48dp"
android:text=""
android:textColor="#1a1a1a"
android:textSize="14sp"
android:visibility="visible" />
</RelativeLayout>
</LinearLayout>
<ExpandableListView
android:id="@+id/exListView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:childIndicator="@null"
android:groupIndicator="@null" >
</ExpandableListView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:layout_marginBottom="@dimen/dp_60">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="2.5"
android:gravity="center_vertical"
android:orientation="horizontal" >
<CheckBox
android:id="@+id/all_chekbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:layout_marginRight="4dp"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:gravity="center"
android:minHeight="64dp"
android:paddingLeft="10dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:visibility="visible" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:text="合计:"
android:textSize="16sp"
android:textStyle="bold" />
<TextView
android:id="@+id/tv_total_price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="¥0.00"
android:textColor="@color/purple"
android:textSize="16sp"
android:textStyle="bold" />
</LinearLayout>
<TextView
android:id="@+id/tv_delete"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@color/orange"
android:clickable="true"
android:gravity="center"
android:text="删除"
android:textColor="#FAFAFA" />
<TextView
android:id="@+id/tv_go_to_pay"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@color/crimson"
android:clickable="true"
android:gravity="center"
android:text="结算(0)"
android:textColor="#FAFAFA" />
</LinearLayout>
</LinearLayout>
这个是店家的布局
<?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="wrap_content"
android:background="@color/white"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@android:color/white" >
<CheckBox
android:id="@+id/determine_chekbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:layout_marginRight="4dp"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:gravity="center"
android:minHeight="38dp"
android:minWidth="32dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:visibility="visible" />
<TextView
android:id="@+id/tv_source_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginBottom="10dp"
android:layout_marginTop="10dp"
android:layout_toRightOf="@id/determine_chekbox"
android:background="@android:color/white"
android:drawablePadding="10dp"
android:text="第八号当铺"
android:textColor="@color/grey_color2"
android:textSize="14sp" />
</RelativeLayout>
</LinearLayout>
然后商品的布局
<?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="wrap_content"
android:orientation="vertical" >
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#CCCCCC" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/page_backgroup"
android:orientation="horizontal" >
<CheckBox
android:id="@+id/check_box"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_marginLeft="10dp"
android:layout_marginRight="4dp"
android:checkMark="?android:attr/listChoiceIndicatorMultiple"
android:gravity="center"
android:minHeight="64dp"
android:minWidth="32dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:visibility="visible" />
<ImageView
android:id="@+id/iv_adapter_list_pic"
android:layout_width="85dp"
android:layout_height="85dp"
android:layout_marginBottom="15dp"
android:layout_marginTop="13dp"
android:scaleType="centerCrop"
android:src="@drawable/ic_launcher_background" />
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="13dp" >
<TextView
android:id="@+id/tv_intro"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="10dp"
android:layout_marginTop="20dp"
android:ellipsize="end"
android:maxLines="2"
android:text="第八号当铺美女一枚"
android:textColor="@color/grey_color1"
android:textSize="14sp" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="30dp"
android:orientation="horizontal" >
<TextView
android:id="@+id/tv_price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:singleLine="true"
android:text="¥ 308.00"
android:textColor="@color/orange_color"
android:textSize="14sp"
android:textStyle="bold" />
<TextView
android:id="@+id/tv_type_size"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_toRightOf="@+id/tv_price"
android:singleLine="true"
android:text="( 4L )"
android:textColor="@color/grey_color3"
android:textSize="10sp"
android:visibility="gone" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="15dp"
android:orientation="horizontal" >
<TextView
android:id="@+id/tv_reduce"
android:layout_width="25dp"
android:layout_height="25dp"
android:gravity="center"
android:text="一"
android:textColor="@color/grey_color1"
android:textSize="12sp" />
<TextView
android:id="@+id/tv_num"
android:layout_width="25dp"
android:layout_height="25dp"
android:gravity="center"
android:singleLine="true"
android:text="1"
android:textColor="@color/grey_color1"
android:textSize="12sp" />
<TextView
android:id="@+id/tv_add"
android:layout_width="25dp"
android:layout_height="25dp"
android:gravity="center"
android:text="+"
android:textColor="@color/grey_color1"
android:textSize="12sp" />
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
布局我们已经整完了,下面开始入手MVP框架的搭建
1.MVP的第一个步骤先写一个契约类,把V层接口,P层接口,M层接口给写一下
2.第二步创建P层的类,在P层中调用M层
3.最后在V层里实现效果
MVP的契约类
package gsp.com.dimensionbusiness.di.consentar;
public interface ShoppingContract {
//V层
public interface ShoppingView {
//显示加载进度
public void showLoading();
//取消加载进度
public void hideLoading();
public void showData(String responseData);
}
//P层
public interface ShoppingPrenser<ShoppingView> {
//绑定
public void attachData(ShoppingContract.ShoppingView shoppingView);
//解绑
public void dataData(ShoppingContract.ShoppingView shoppingView);
//和M层进行交互
public void resquesData();
}
//M层
public interface ShoppingModel{
//请求数据
public void cantainData(Callback callback);
//接口回调
public interface Callback{
//回显数据
public void onCallback(String responseData);
}
}
}
P层的类
package gsp.com.dimensionbusiness.di.prenser;
import java.lang.ref.SoftReference;
import gsp.com.dimensionbusiness.di.consentar.ShoppingContract;
import gsp.com.dimensionbusiness.di.mdel.ShoppingModel;
public class ShopingPresenter implements ShoppingContract.ShoppingPrenser<ShoppingContract.ShoppingView> {
ShoppingContract.ShoppingView shoppingView;
private SoftReference<ShoppingContract.ShoppingView> softReference;
private ShoppingModel shoppingModel;
@Override
public void attachData(ShoppingContract.ShoppingView shoppingView) {
this.shoppingView=shoppingView;
//创建软引用
softReference = new SoftReference<>(shoppingView);
//获取M层
shoppingModel = new ShoppingModel();
}
@Override
public void dataData(ShoppingContract.ShoppingView shoppingView) {
softReference.clear();
}
@Override
public void resquesData() {
shoppingModel.cantainData(new ShoppingContract.ShoppingModel.Callback() {
@Override
public void onCallback(String responseData) {
shoppingView.showData(responseData);
}
});
}
}
M层的类
package gsp.com.dimensionbusiness.di.mdel;
import com.lzy.okgo.OkGo;
import com.lzy.okgo.callback.StringCallback;
import com.lzy.okgo.model.Response;
import gsp.com.dimensionbusiness.data.Contain;
import gsp.com.dimensionbusiness.di.consentar.ShoppingContract;
public class ShoppingModel implements ShoppingContract.ShoppingModel {
@Override
public void cantainData(final Callback callback) {
//OkGo
OkGo.<String>get(Contain.SHOPPINGCART_URL).execute(new StringCallback() {
@Override
public void onSuccess(Response<String> response) {
String requestData = response.body().toString();
callback.onCallback(requestData);
}
});
}
}
我在这块插一句话啊,如果你是用接口解析数据,那么我下面的这个代码你得看看了,这个是我用的接口,我发布的这些接口不能用,因为我往里面加了点料 哈哈
package gsp.com.dimensionbusiness.data;
public class Contain {
//登录
public static final String LOGIN="http://mobile.bwstudent.com/small/big_user/v1/login";
//注册
public static final String REGISTER="http://mobile.bwstudent.com/small/big_user/v1/register";
//轮播图
public static final String IMAGEVIEW="http://mobile.bwstudent.com/small/comodity/v1/bannerShow";
//首页商品接口
public static final String HOMEPAGE="http://mobile.bwstudent.com/small/comodity/v1/commodityList";
//购物车页接口
public static final String SHOPPINGCART_URL = "https://www.zhaoapi.cn/produot/getCarts?uid=71";
}
V层的实现类
package gsp.com.dimensionbusiness.ui.fragment;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.ExpandableListView;
import android.widget.TextView;
import android.widget.Toast;
import com.google.gson.Gson;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import gsp.com.dimensionbusiness.R;
import gsp.com.dimensionbusiness.data.bean.GroupInfo;
import gsp.com.dimensionbusiness.data.bean.ProductInfo;
import gsp.com.dimensionbusiness.data.bean.Shoppingbean;
import gsp.com.dimensionbusiness.di.consentar.ShoppingContract;
import gsp.com.dimensionbusiness.di.prenser.ShopingPresenter;
import gsp.com.dimensionbusiness.ui.adapter.ShopcartExpandableListViewAdapter;
public class ThreeFragment extends Fragment implements ShopcartExpandableListViewAdapter.CheckInterface, ShopcartExpandableListViewAdapter.ModifyCountInterface, View.OnClickListener, ShoppingContract.ShoppingView {
private ExpandableListView exListView;
private CheckBox cb_check_all;
private TextView tv_total_price;
private TextView tv_delete;
private TextView tv_go_to_pay;
private Context context;
private double totalPrice = 0.00;// 购买的商品总价
private int totalCount = 0;// 购买的商品总数量
private ShopcartExpandableListViewAdapter selva;
private List<GroupInfo> groups = new ArrayList<GroupInfo>();// 组元素数据列表
private Map<String, List<ProductInfo>> children = new HashMap<String, List<ProductInfo>>();// 子元素数据列表
private List<Shoppingbean.DataBean> data;
private View view;
private ShopingPresenter shopingPresenter;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
view = View.inflate(getActivity(), R.layout.fragment_three, null);
shopingPresenter = new ShopingPresenter();
shopingPresenter.attachData(this);
shopingPresenter.resquesData();
context = getContext();
exListView = (ExpandableListView) view.findViewById(R.id.exListView);
cb_check_all = (CheckBox) view.findViewById(R.id.all_chekbox);
tv_total_price = (TextView) view.findViewById(R.id.tv_total_price);
tv_delete = (TextView) view.findViewById(R.id.tv_delete);
tv_go_to_pay = (TextView) view.findViewById(R.id.tv_go_to_pay);
return view;
}
private void initEvents() {
selva = new ShopcartExpandableListViewAdapter(groups, children, context);
selva.setCheckInterface(this);// 关键步骤1,设置复选框接口
selva.setModifyCountInterface(this);// 关键步骤2,设置数量增减接口
exListView.setAdapter(selva);
for (int i = 0; i < selva.getGroupCount(); i++) {
exListView.expandGroup(i);// 关键步骤3,初始化时,将ExpandableListView以展开的方式呈现
}
cb_check_all.setOnClickListener(this);
tv_delete.setOnClickListener(this);
tv_go_to_pay.setOnClickListener(this);
}
/**
* 模拟数据<br>
* 遵循适配器的数据列表填充原则,组元素被放在一个List中,对应的组元素下辖的子元素被放在Map中,<br>
* 其键是组元素的Id(通常是一个唯一指定组元素身份的值)
*/
private void virtualData() {
for (int i = 0; i < data.size(); i++) {
Shoppingbean.DataBean dataBean = data.get(i);
String sellerName = dataBean.getSellerName();
groups.add(new GroupInfo(i + "", sellerName));
List<ProductInfo> products = new ArrayList<ProductInfo>();
List<Shoppingbean.DataBean.ListBean> list = dataBean.getList();
for (int j = 0; j < list.size(); j++) {
Shoppingbean.DataBean.ListBean listBean = list.get(j);
//Toast.makeText(context, "111111"+listBean.getImages(), Toast.LENGTH_SHORT).show();
String images = listBean.getImages();
String[] split = images.split("\\|");
products.add(new ProductInfo(j + "", "商品", split[0], listBean.getTitle(), listBean.getPrice(), listBean.getNum()));
}
children.put(groups.get(i).getId(), products);// 将组元素的一个唯一值,这里取Id,作为子元素List的Key
}
}
@Override
public void onClick(View v) {
AlertDialog alert;
switch (v.getId()) {
case R.id.all_chekbox:
doCheckAll();
calculate();
break;
case R.id.tv_go_to_pay:
if (totalCount == 0) {
Toast.makeText(context, "请选择要支付的商品", Toast.LENGTH_LONG).show();
return;
}
alert = new AlertDialog.Builder(context).create();
alert.setTitle("操作提示");
alert.setMessage("总计:\n" + totalCount + "种商品\n" + totalPrice + "元");
alert.setButton(DialogInterface.BUTTON_NEGATIVE, "取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
return;
}
});
alert.setButton(DialogInterface.BUTTON_POSITIVE, "确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
return;
}
});
alert.show();
break;
case R.id.tv_delete:
if (totalCount == 0) {
Toast.makeText(context, "请选择要移除的商品", Toast.LENGTH_LONG).show();
return;
}
alert = new AlertDialog.Builder(context).create();
alert.setTitle("操作提示");
alert.setMessage("您确定要将这些商品从购物车中移除吗?");
alert.setButton(DialogInterface.BUTTON_NEGATIVE, "取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
return;
}
});
alert.setButton(DialogInterface.BUTTON_POSITIVE, "确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
doDelete();
}
});
alert.show();
break;
}
}
/**
* 删除操作<br>
* 1.不要边遍历边删除,容易出现数组越界的情况<br>
* 2.现将要删除的对象放进相应的列表容器中,待遍历完后,以removeAll的方式进行删除
*/
protected void doDelete() {
List<GroupInfo> toBeDeleteGroups = new ArrayList<GroupInfo>();// 待删除的组元素列表
for (int i = 0; i < groups.size(); i++) {
GroupInfo group = groups.get(i);
if (group.isChoosed()) {
toBeDeleteGroups.add(group);
}
List<ProductInfo> toBeDeleteProducts = new ArrayList<ProductInfo>();// 待删除的子元素列表
List<ProductInfo> childs = children.get(group.getId());
for (int j = 0; j < childs.size(); j++) {
if (childs.get(j).isChoosed()) {
toBeDeleteProducts.add(childs.get(j));
}
}
childs.removeAll(toBeDeleteProducts);
}
groups.removeAll(toBeDeleteGroups);
selva.notifyDataSetChanged();
calculate();
}
@Override
public void doIncrease(int groupPosition, int childPosition, View showCountView, boolean isChecked) {
ProductInfo product = (ProductInfo) selva.getChild(groupPosition, childPosition);
int currentCount = product.getCount();
currentCount++;
product.setCount(currentCount);
((TextView) showCountView).setText(currentCount + "");
selva.notifyDataSetChanged();
calculate();
}
@Override
public void doDecrease(int groupPosition, int childPosition, View showCountView, boolean isChecked) {
ProductInfo product = (ProductInfo) selva.getChild(groupPosition, childPosition);
int currentCount = product.getCount();
if (currentCount == 1)
return;
currentCount--;
product.setCount(currentCount);
((TextView) showCountView).setText(currentCount + "");
selva.notifyDataSetChanged();
calculate();
}
@Override
public void checkGroup(int groupPosition, boolean isChecked) {
GroupInfo group = groups.get(groupPosition);
List<ProductInfo> childs = children.get(group.getId());
for (int i = 0; i < childs.size(); i++) {
childs.get(i).setChoosed(isChecked);
}
if (isAllCheck())
cb_check_all.setChecked(true);
else
cb_check_all.setChecked(false);
selva.notifyDataSetChanged();
calculate();
}
@Override
public void checkChild(int groupPosition, int childPosiTion, boolean isChecked) {
boolean allChildSameState = true;// 判断改组下面的所有子元素是否是同一种状态
GroupInfo group = groups.get(groupPosition);
List<ProductInfo> childs = children.get(group.getId());
for (int i = 0; i < childs.size(); i++) {
if (childs.get(i).isChoosed() != isChecked) {
allChildSameState = false;
break;
}
}
if (allChildSameState) {
group.setChoosed(isChecked);// 如果所有子元素状态相同,那么对应的组元素被设为这种统一状态
} else {
group.setChoosed(false);// 否则,组元素一律设置为未选中状态
}
if (isAllCheck())
cb_check_all.setChecked(true);
else
cb_check_all.setChecked(false);
selva.notifyDataSetChanged();
calculate();
}
private boolean isAllCheck() {
for (GroupInfo group : groups) {
if (!group.isChoosed())
return false;
}
return true;
}
/**
* 全选与反选
*/
private void doCheckAll() {
for (int i = 0; i < groups.size(); i++) {
groups.get(i).setChoosed(cb_check_all.isChecked());
GroupInfo group = groups.get(i);
List<ProductInfo> childs = children.get(group.getId());
for (int j = 0; j < childs.size(); j++) {
childs.get(j).setChoosed(cb_check_all.isChecked());
}
}
selva.notifyDataSetChanged();
}
/**
* 统计操作<br>
* 1.先清空全局计数器<br>
* 2.遍历所有子元素,只要是被选中状态的,就进行相关的计算操作<br>
* 3.给底部的textView进行数据填充
*/
private void calculate() {
totalCount = 0;
totalPrice = 0.00;
for (int i = 0; i < groups.size(); i++) {
GroupInfo group = groups.get(i);
List<ProductInfo> childs = children.get(group.getId());
for (int j = 0; j < childs.size(); j++) {
ProductInfo product = childs.get(j);
if (product.isChoosed()) {
totalCount++;
totalPrice += product.getPrice() * product.getCount();
}
}
}
tv_total_price.setText("¥" + totalPrice);
tv_go_to_pay.setText("去支付(" + totalCount + ")");
}
@Override
public void showLoading() {
}
@Override
public void hideLoading() {
}
@Override
public void onDestroyView() {
super.onDestroyView();
shopingPresenter.dataData(this);
}
@Override
public void showData(String responseData) {
Gson gson = new Gson();
Shoppingbean shoppingbean = gson.fromJson(responseData, Shoppingbean.class);
data = shoppingbean.getData();
//Toast.makeText(context, "111", Toast.LENGTH_SHORT).show();
//加载布局
virtualData();
initEvents();
}
}
下面我把适配器给大家发布一下
package gsp.com.dimensionbusiness.ui.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 java.util.List;
import java.util.Map;
import gsp.com.dimensionbusiness.R;
import gsp.com.dimensionbusiness.data.bean.GroupInfo;
import gsp.com.dimensionbusiness.data.bean.ProductInfo;
public class ShopcartExpandableListViewAdapter extends BaseExpandableListAdapter {
private List<GroupInfo> groups;
private Map<String, List<ProductInfo>> children;
private Context context;
//HashMap<Integer, View> groupMap = new HashMap<Integer, View>();
//HashMap<Integer, View> childrenMap = new HashMap<Integer, View>();
private CheckInterface checkInterface;
private ModifyCountInterface modifyCountInterface;
/**
* 构造函数
*
* @param groups 组元素列表
* @param children 子元素列表
* @param context
*/
public ShopcartExpandableListViewAdapter(List<GroupInfo> groups, Map<String, List<ProductInfo>> children, Context context) {
super();
this.groups = groups;
this.children = children;
this.context = context;
}
public void setCheckInterface(CheckInterface checkInterface) {
this.checkInterface = checkInterface;
}
public void setModifyCountInterface(ModifyCountInterface modifyCountInterface) {
this.modifyCountInterface = modifyCountInterface;
}
@Override
public int getGroupCount() {
return groups.size();
}
@Override
public int getChildrenCount(int groupPosition) {
String groupId = groups.get(groupPosition).getId();
return children.get(groupId).size();
}
@Override
public Object getGroup(int groupPosition) {
return groups.get(groupPosition);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
List<ProductInfo> childs = children.get(groups.get(groupPosition).getId());
return childs.get(childPosition);
}
@Override
public long getGroupId(int groupPosition) {
return 0;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return 0;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getGroupView(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
GroupHolder gholder;
if (convertView == null) {
gholder = new GroupHolder();
convertView = View.inflate(context, R.layout.item_shopcart_group, null);
gholder.cb_check = (CheckBox) convertView.findViewById(R.id.determine_chekbox);
gholder.tv_group_name = (TextView) convertView.findViewById(R.id.tv_source_name);
//groupMap.put(groupPosition, convertView);
convertView.setTag(gholder);
} else {
// convertView = groupMap.get(groupPosition);
gholder = (GroupHolder) convertView.getTag();
}
final GroupInfo group = (GroupInfo) getGroup(groupPosition);
if (group != null) {
gholder.tv_group_name.setText(group.getName());
gholder.cb_check.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v)
{
group.setChoosed(((CheckBox) v).isChecked());
checkInterface.checkGroup(groupPosition, ((CheckBox) v).isChecked());// 暴露组选接口
}
});
gholder.cb_check.setChecked(group.isChoosed());
}
return convertView;
}
@Override
public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
final ChildHolder cholder;
if (convertView == null) {
cholder = new ChildHolder();
convertView = View.inflate(context, R.layout.item_shopcart_product, null);
cholder.cb_check = (CheckBox) convertView.findViewById(R.id.check_box);
cholder.ivvv = convertView.findViewById(R.id.iv_adapter_list_pic);
cholder.tv_product_desc = (TextView) convertView.findViewById(R.id.tv_intro);
cholder.tv_price = (TextView) convertView.findViewById(R.id.tv_price);
cholder.iv_increase = (TextView) convertView.findViewById(R.id.tv_add);
cholder.iv_decrease = (TextView) convertView.findViewById(R.id.tv_reduce);
cholder.tv_count = (TextView) convertView.findViewById(R.id.tv_num);
// childrenMap.put(groupPosition, convertView);
convertView.setTag(cholder);
} else {
// convertView = childrenMap.get(groupPosition);
cholder = (ChildHolder) convertView.getTag();
}
final ProductInfo product = (ProductInfo) getChild(groupPosition, childPosition);
if (product != null) {
Glide.with(context).load(product.getImageUrl()).into(cholder.ivvv);
cholder.tv_product_desc.setText(product.getDesc());
cholder.tv_price.setText("¥" + product.getPrice() + "");
cholder.tv_count.setText(product.getCount() + "");
cholder.cb_check.setChecked(product.isChoosed());
cholder.cb_check.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
product.setChoosed(((CheckBox) v).isChecked());
cholder.cb_check.setChecked(((CheckBox) v).isChecked());
checkInterface.checkChild(groupPosition, childPosition, ((CheckBox) v).isChecked());// 暴露子选接口
}
});
cholder.iv_increase.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
modifyCountInterface.doIncrease(groupPosition, childPosition, cholder.tv_count, cholder.cb_check.isChecked());// 暴露增加接口
}
});
cholder.iv_decrease.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
modifyCountInterface.doDecrease(groupPosition, childPosition, cholder.tv_count, cholder.cb_check.isChecked());// 暴露删减接口
}
});
}
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
/**
* 组元素绑定器
*/
private class GroupHolder {
CheckBox cb_check;
TextView tv_group_name;
}
/**
* 子元素绑定器
*/
private class ChildHolder {
CheckBox cb_check;
ImageView ivvv;
TextView tv_product_name;
TextView tv_product_desc;
TextView tv_price;
TextView iv_increase;
TextView tv_count;
TextView iv_decrease;
}
/**
* 复选框接口
*/
public interface CheckInterface {
/**
* 组选框状态改变触发的事件
*
* @param groupPosition 组元素位置
* @param isChecked 组元素选中与否
*/
public void checkGroup(int groupPosition, boolean isChecked);
/**
* 子选框状态改变时触发的事件
*
* @param groupPosition 组元素位置
* @param childPosition 子元素位置
* @param isChecked 子元素选中与否
*/
public void checkChild(int groupPosition, int childPosition, boolean isChecked);
}
/**
* 改变数量的接口
*/
public interface ModifyCountInterface {
/**
* 增加操作
*
* @param groupPosition 组元素位置
* @param childPosition 子元素位置
* @param showCountView 用于展示变化后数量的View
* @param isChecked 子元素选中与否
*/
public void doIncrease(int groupPosition, int childPosition, View showCountView, boolean isChecked);
/**
* 删减操作
*
* @param groupPosition 组元素位置
* @param childPosition 子元素位置
* @param showCountView 用于展示变化后数量的View
* @param isChecked 子元素选中与否
*/
public void doDecrease(int groupPosition, int childPosition, View showCountView, boolean isChecked);
}
}
说实话我感觉我这篇博客发布的内容有点多
我还是会把剩下的内容发布,我发现有些博客只写一部分,剩下的就不写了,这是最恶心的
如果发现我代码没有发全,或者有不懂的,可以私聊我,我给你解释一下
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