Android 购物车编辑全选，取消全选 + 计算商品价格
网上编辑购物车全选，取消全选的例子有很多，我最近正好在做这个功能，然后就整理了好多网上的例子，把好几个人的思想整理到我的项目中，东西虽然不多，但也费不少劲。。今天终于测试好了。上图看看效果吧~~
第一张：选择单个商品
全选。
全不选我就不上图了
现在开始代码吧：
第一个布局文件 activity_act_view.xml
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" > <RelativeLayout android:id="@+id/titlerelativelayout" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/title_background" android:gravity="center_vertical" > <LinearLayout android:id="@+id/ShoppingCart_top" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:gravity="center_vertical" android:orientation="vertical" android:padding="10dp" > <TextView android:id="@+id/ShoppingCart_title_txt" android:layout_width="68dp" android:layout_height="wrap_content" android:gravity="center_vertical" android:text="购物车" android:textColor="#FF8C00" android:textSize="17sp" /> </LinearLayout> <TextView android:id="@+id/Cart_toEdit" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:layout_marginLeft="10dp" android:layout_centerVertical="true" android:text="编辑" android:textColor="#4F4F4F" android:textSize="17sp" /> </RelativeLayout> <com.shop.eshopservice.xListView.XListView android:id="@+id/ShoppingCartListView" android:layout_width="match_parent" android:layout_height="match_parent" android:cacheColorHint="#00000000" android:fastScrollEnabled="true" android:layout_below="@+id/titlerelativelayout" /> <LinearLayout android:id="@+id/linear_cartOrderBottom" android:layout_width="match_parent" android:layout_height="50dp" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" android:background="@drawable/bottom_border" android:orientation="horizontal" > <CheckBox android:id="@+id/cb_cart_all" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="10dp" android:text="全选" android:textColor="#000000" /> <TextView android:id="@+id/cart_orderallmoney" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="right" android:layout_marginRight="10dp" android:text="合计：￥0.00" android:textColor="#FF0000" android:textSize="13sp" /> <TextView android:id="@+id/cart_pro_tobuy" android:layout_width="90dp" android:layout_height="50dp" android:background="#FF5000" android:layout_marginRight="10dp" android:gravity="center" android:text="结算" android:textColor="#ffffff" /> </LinearLayout> </RelativeLayout>
这里我用的是自定义的ListView。然后购物车的单个商品详情 item_shoppingcart.xml
<?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="@drawable/list_background" android:orientation="vertical" > <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="right"> <TextView android:id="@+id/Cart_toEdit" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_marginRight="10dp" android:layout_marginTop="7dp" android:gravity="right" android:text="编辑" android:textColor="#4F4F4F" android:textSize="12sp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="5" android:layout_margin="8dp"> <CheckBox android:id="@+id/cb" android:layout_width="wrap_content" android:layout_height="wrap_content" android:focusable="false" android:gravity="center" android:layout_marginTop="19dp" android:focusableInTouchMode="false" android:clickable="false" android:checkMark="?android:attr/listChoiceIndicatorMultiple"/> <ImageView android:id="@+id/CartItemImage" android:layout_width="260dp" android:layout_height="70dp" android:layout_weight="8" android:background="@drawable/list_background_imgbg" android:padding="0dp" android:scaleType="centerInside" android:src="@drawable/shop_photo_frame" /> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="5" android:orientation="vertical" android:paddingRight="5dp" > <RelativeLayout android:id="@+id/ItemTopLayout" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="37" android:paddingTop="7dp" > <RelativeLayout android:layout_width="match_parent" android:layout_height="wrap_content" > <TextView android:id="@+id/cartItemTextView" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:ellipsize="end" android:marqueeRepeatLimit="marquee_forever" android:paddingLeft="10dp" android:paddingRight="2dp" android:text="商品标题" android:textColor="#4F4F4F" android:textSize="12sp" /> </RelativeLayout> </RelativeLayout> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_weight="40" android:gravity="bottom" android:paddingBottom="9dp" android:paddingLeft="10dp" > <LinearLayout android:id="@+id/Itembottemleft" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center_vertical" > <TextView android:id="@+id/CartItemPrice" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_marginRight="10dp" android:gravity="bottom" android:text="￥110" android:textColor="#f44415" android:textSize="11sp" /> </LinearLayout> <LinearLayout android:id="@+id/Itembottemright" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_alignParentRight="true" android:gravity="bottom" android:orientation="horizontal" android:paddingRight="2dp" > <TextView android:id="@+id/CartItemCount" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_marginRight="8dp" android:gravity="bottom" android:text="X1" android:textColor="#666666" android:textSize="11sp" /> </LinearLayout> </RelativeLayout> </LinearLayout> </LinearLayout> </LinearLayout>
然后就是我的购物车代码了，因为我的主页面用的是FragmentPagerAdapter+ViewPager,所以每个类都继承了Fragment
package com.shop.eshopservice;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.view.animation.AnimationSet;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ImageView;
import android.widget.TextView;
import com.shop.eshopservice.Data.Data;
import com.shop.eshopservice.adapter.ShoppingCartAdapter.onCheckedChanged;
import com.shop.eshopservice.model.Model;
import com.shop.eshopservice.model.Product;
import com.shop.eshopservice.model.ShoppingCart;
import com.shop.eshopservice.sqlite.dao.EShopOpenHelper;
import com.shop.eshopservice.tool.ToastUtils;
import com.shop.eshopservice.utils.LoadImg;
import com.shop.eshopservice.utils.LoadPictrue;
import com.shop.eshopservice.xListView.XListView;
import com.shop.eshopservice.xListView.XListView.IXListViewListener;
/**
* 购物车模块
* @author Administrator
*
*/
public class ActionActivity extends Fragment implements OnTouchListener, IXListViewListener, OnClickListener,onCheckedChanged{
private View view;
private List<ShoppingCart> cartList = new ArrayList<ShoppingCart>();
private ShoppingCartAdapter cartAdapter;
private EShopOpenHelper eshop;
// private PullToRefreshListView mListView;
private XListView mListView;
private TextView tv_money,tv_toEdit,to_DelBuy;
private CheckBox selectAll;
private int pageIndex = 0;
private int pageSize = 10;
private int visibleLastIndex = 0; //最后的可视项索引
private int visibleItemCount; // 当前窗口可见项总数
float fist_down_Y = 0;
private AnimationSet animationSet;
private boolean[] is_choice;
private onCheckedChanged listener;
@Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
view = inflater.inflate(R.layout.activity_act_view, container, false);
eshop = new EShopOpenHelper(getActivity().getApplicationContext());
// mListView = (PullToRefreshListView) view.findViewById(R.id.ShoppingCartListView);
mListView = (XListView)view.findViewById(R.id.ShoppingCartListView);
tv_toEdit = (TextView)view.findViewById(R.id.Cart_toEdit); //总编辑按钮
to_DelBuy = (TextView)view.findViewById(R.id.cart_pro_tobuy);
selectAll = (CheckBox)view.findViewById(R.id.cb_cart_all);
selectAll.setOnClickListener(this);
is_choice=new boolean[cartList.size()];
// selectAll.set
tv_money = (TextView)view.findViewById(R.id.cart_orderallmoney);
cartList = eshop.selShoppingCart(pageIndex,pageSize); //从数据库获取购物车的数据
cartAdapter = new ShoppingCartAdapter(cartList, getActivity().getApplicationContext());
// mListView.setOnScrollListener(this);
mListView.setOnTouchListener(this);
mListView.setXListViewListener(this);
// 设置可以进行下拉加载的功能
mListView.setPullLoadEnable(true);
mListView.setPullRefreshEnable(true);
// tv_money.setText("");
/*mListView.setOnRefreshListener(new OnRefreshListener() {
@Override
public void onRefresh() {
new GetDataTask(getActivity(), 0).execute();
}
@Override
public void onLoadMore() {
new GetDataTask(getActivity(), 1).execute();
}
});*/
selectAll.setOnCheckedChangeListener(new OnCheckedChangeListener() {
public void onCheckedChanged(CompoundButton arg0, boolean arg1) {
// 记录列表每一行的选中状态数量
int isChoice_all = 0;
if(arg1){
Data.Allprice_cart = 0;
// 设置全选
for(int i = 0;i < cartAdapter.getCount();i++){
cartAdapter.selectedMap.put(i, true);
if(cartList.size()!=0){ //购物车里有商品
Data.Allprice_cart +=(cartList.get(i).getLocalprice())*cartList.get(i).getProcount();
}
}
tv_money.setText("合计：￥"+Data.Allprice_cart+""); //这里的Data.Allprice_cart是我单独定义的一个放静态数据的类
}else {
// 设置全部取消
for (int i = 0; i < cartAdapter.getCount(); i++) {
// 判断列表每一行是否处于选中状态，如果处于选中状态，则计数+1
if(cartAdapter.selectedMap.get(i)){
// 计算出列表选中状态的数量
isChoice_all += 1;
}
}
// 判断列表选中数是否等于列表的总数，如果等于，那么就需要执行全部取消操作
if (isChoice_all == cartAdapter.getCount()) {
// 如果没有选中了全选，那么就将列表的每一行都不选
for (int i = 0; i < cartAdapter.getCount(); i++) {
// 列表每一行都取消
cartAdapter.selectedMap.put(i, false);
if(cartList.size()!=0){ //购物车里有商品
Data.Allprice_cart -=(cartList.get(i).getLocalprice())*cartList.get(i).getProcount();
}
}
}
tv_money.setText("合计：￥"+Data.Allprice_cart+"");
cartAdapter.notifyDataSetChanged();
}
}
});
mListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
if(id<0){
return; // 点击的是headerView或者footerView
}
Intent intent = new Intent(getActivity(), GoodsDetailActivity.class);
Bundle bund = new Bundle();
ShoppingCart cart = (ShoppingCart) parent.getAdapter().getItem(position);
bund.putSerializable("CartInfo",cart);
intent.putExtra("cartvalue",bund);
intent.putExtra("cart", "cart");
startActivity(intent);
}
});
cartAdapter.notifyDataSetChanged();
mListView.setAdapter(cartAdapter);
return view;
}
/**
* 滑动时被调用
*/
/*@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
this.visibleItemCount = visibleItemCount;
visibleLastIndex = firstVisibleItem + visibleItemCount -1;
}
*//**
* 当滑动改变时调用
*//*
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
int itemsLastIndex = cartAdapter.getCount() -1; //数据集最后一项的索引
int lastIndex = itemsLastIndex +1;
if(scrollState == OnScrollListener.SCROLL_STATE_IDLE && visibleLastIndex == lastIndex){
//如果是自动加载,可以在这里放置异步加载数据的代码
Log.i("LOADMORE", "loading...");
}
}*/
private class GetDataTask extends AsyncTask<Void, Void, List<Product>> {
private Context context;
private int index;
public GetDataTask(Context context, int index) {
this.context = context;
this.index = index;
}
@Override
protected List<Product> doInBackground(Void... arg0) {
return null;
}
@Override
protected void onPostExecute(List<Product> result) {
if (index == 0) {
pageIndex = 0;
cartList = eshop.selShoppingCart(pageIndex,pageSize);
// SimpleDateFormat format = new SimpleDateFormat(
// "yyyy年MM月dd日 HH:mm");
// String date = format.format(new Date());
// mListView.onRefreshComplete(date);
} else if (index == 1) {
pageIndex += 10;
cartList = eshop.selShoppingCart(pageIndex,pageSize);
if(cartList.size() > 0){
for (int i = 0; i < cartList.size(); i++) {
ShoppingCart cart = cartList.get(i);
cartAdapter.addCartItem(cart);
}
}else{
ToastUtils.ToastMessage(getActivity().getApplicationContext(), "亲，已经是最后一条数据啦...");
}
cartAdapter.notifyDataSetChanged();
// mListView.onLoadMoreComplete();
}
onLoad();
super.onPostExecute(result);
}
}
@Override
public void onRefresh() {
new GetDataTask(getActivity(), 0).execute();
}
@Override
public void onLoadMore() {
new GetDataTask(getActivity(), 1).execute();
}
@Override
public boolean onTouch(View arg0, MotionEvent event) {
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
//第一次按下时的坐标
fist_down_Y = y;
break;
case MotionEvent.ACTION_MOVE:
if (fist_down_Y - y > 250) {
if (animationSet != null) {
animationSet = null;
}
// animationSet = (AnimationSet) AnimationUtils.loadAnimation(this, R.anim.up_out);
}
// 向下滑动，显示搜索栏
if (y - fist_down_Y > 250) {
if (animationSet != null) {
animationSet = null;
}
// animationSet = (AnimationSet) AnimationUtils.loadAnimation(this, R.anim.down_in);
}
break;
}
return false;
}
/** 停止加载和刷新 */
private void onLoad() {
mListView.stopRefresh();
// 停止加载更多
mListView.stopLoadMore();
// 设置最后一次刷新时间
mListView.setRefreshTime(getCurrentTime(System.currentTimeMillis()));
}
/** 简单的时间格式 */
public static SimpleDateFormat mDateFormat = new SimpleDateFormat("MM-dd HH:mm");
public static String getCurrentTime(long time) {
if (0 == time) {
return "";
}
return mDateFormat.format(new Date(time));
}
@Override
public void getChoiceData(int position, boolean isChoice) {
if(isChoice){
if(cartList.size()!=0){ //购物车里有商品
Data.Allprice_cart +=(cartList.get(position).getLocalprice())*cartList.get(position).getProcount();
}
}else{
if(cartList.size()!=0){
Data.Allprice_cart -=(cartList.get(position).getLocalprice())*cartList.get(position).getProcount();
}
}
// 记录列表处于选中状态的数量
int num_choice = 0;
for (int i = 0; i < cartAdapter.getCount(); i++) {
if(cartList !=null &&(cartAdapter.selectedMap.get(i))){
num_choice ++;
}
}
if(num_choice == cartList.size()){
selectAll.setChecked(true);
} else {
selectAll.setChecked(false);
}
tv_money.setText("合计：￥"+Data.Allprice_cart+"");
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.Cart_toEdit:
tv_toEdit.setText("完成");
to_DelBuy.setText("删除");
break;
case R.id.cb_cart_all:
// if(selectAll.isChecked()){
// for(int i =0;i< cartAdapter.getCount();i++){
// cartAdapter.selectedMap.put(i, true);
//// cartAdapter.delContactsIdSet.add(String.valueOf(cartAdapter.list.get(i).getId()));
// }
//
// }else{
// for (int i = 0; i < cartAdapter.getCount(); i++) {
// cartAdapter.selectedMap.put(i, false);
//// cartAdapter.delContactsIdSet.clear();
// }
// }
cartAdapter.notifyDataSetChanged();
break;
}
}
class ShoppingCartAdapter extends BaseAdapter {
//保存listview item的状态
HashMap<Integer,View> map = new HashMap<Integer,View>();
List<ShoppingCart> list;
// 用来控制CheckBox的选中状况
Map<Integer, Boolean> selectedMap;
// HashSet<String> delContactsIdSet;
Context ctx;
private LoadImg loadImg;
private double allMoney = 0.0;
public ShoppingCartAdapter(List<ShoppingCart> list, Context ctx) {
this.list = list;
this.ctx = ctx;
// delContactsIdSet = new HashSet<String>();
selectedMap = new HashMap<Integer, Boolean>();
initDate();
}
// 初始化isSelected的数据
private void initDate() {
for (int i = 0; i < list.size(); i++) {
selectedMap.put(i,false);
}
}
public void setList(List<ShoppingCart> proList){
this.list = proList;
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int arg0) {
return list.get(arg0);
}
@Override
public long getItemId(int arg0) {
return arg0;
}
public void addCartItem(ShoppingCart cart){
list.add(cart);
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
Holder hold = null;
View view = null;
if(map.get(position) == null){
// 获得ViewHolder对象
// 导入布局并赋值给convertview
LayoutInflater mInflater = (LayoutInflater) ctx.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = mInflater.inflate(R.layout.item_shoppingcart, null);
hold = new Holder();
hold.toEdit = (TextView)view.findViewById(R.id.Cart_toEdit);
hold.mTitle = (TextView) view.findViewById(R.id.cartItemTextView); //产品标题
hold.mImage = (ImageView) view.findViewById(R.id.CartItemImage); //产品图片
hold.mPrice = (TextView) view.findViewById(R.id.CartItemPrice); //产品价格
hold.mCount = (TextView) view.findViewById(R.id.CartItemCount);
hold.check_goods = (CheckBox)view.findViewById(R.id.cb);
final int p = position;
hold.check_goods.setChecked(selectedMap.get(position));
hold.check_goods.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View vi) {
//selectedMap.put(p, true);
}
});
hold.check_goods.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton arg0, boolean isChoice) {
if(isChoice){
selectedMap.put(p, true);
}else{
selectedMap.put(p, false);
}
getChoiceData(position, isChoice); //当每次选中发生变化时调用它进行判断
}
});
view.setTag(hold);
}else{
//取出hold
view = map.get(position);
hold = (Holder)view.getTag();
}
hold.mTitle.setText(ToDBC(list.get(position).getTitle()));
hold.mImage.setTag(Model.SHOPLISTIMGURL + list.get(position).getImageUrl());
hold.mPrice.setText("￥"+list.get(position).getLocalprice() + "");
hold.mCount.setText("X"+list.get(position).getProcount());
// 设置默认显示的图片
hold.mImage.setImageResource(R.drawable.shop_photo_frame);
LoadPictrue.loadImage4(hold.mImage.getTag().toString() ,hold.mImage); //缓存加载图片
return view;
}
//规定布局页面标题换行代码
public String ToDBC(String input) {
char[] c = input.toCharArray();
for (int i = 0; i< c.length; i++) {
if (c[i] == 12288) {
c[i] = (char) 32;
continue;
}if (c[i]> 65280&& c[i]< 65375)
c[i] = (char) (c[i] - 65248);
}
return new String(c);
}
class Holder {
public TextView mTitle, mPrice, mCount,toEdit;
public ImageView mImage;
public CheckBox check_goods;
}
}
}
我去，代码竟然这么长，看起来可能有点费劲，但功能实现就好。