这篇文章主要为大家详细介绍了Android实现购物车功能的具体方法 ，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
这篇文章主要为大家详细介绍了Android实现购物车功能的具体方法 ，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
正文
Android实现购物车功能
最近看了一些淘宝的demo，于是也写了一个。
效果图如下：
主要代码如下：
actvity中的代码：
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public class shoppingcartactivity extends baseactivity { private list<test> data; private listview mlistview; private shoppingcartadapter adapter; private relativelayout rlrefresh; private textview tvrefresh; private progressbar barrefresh; private linearlayout clear; private checkbox checkbox_select_all; private checkbox checkbox_add; private textview integral_sum; private int sum = 0; private int[] sumintegral; private context context; @override protected void oncreate(bundle bundle) { // todo auto-generated method stub super.oncreate(bundle); setcontentview(r.layout.activity_shopping_cart); initview(); } private void initview() { context = this; showpage = 1; ispermitflag = true; data = new arraylist<test>(); // 测试数据 data.add(new test("id", "color", "type", "100")); data.add(new test("id", "color", "type", "200")); data.add(new test("id", "color", "type", "300")); data.add(new test("id", "color", "type", "0")); data.add(new test("id", "color", "type", "300")); data.add(new test("id", "color", "type", "100")); data.add(new test("id", "color", "type", "500")); data.add(new test("id", "color", "type", "0")); data.add(new test("id", "color", "type", "900")); adapter = new shoppingcartadapter(context, handler, data); sumintegral = new int[data.size() + 1]; checkbox_add = (checkbox) findviewbyid(r.id.checkbox_add); integral_sum = (textview) findviewbyid(r.id.integral_sum); clear = (linearlayout) findviewbyid(r.id.clear); clear.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { data.clear(); adapter.notifydatasetchanged(); integral_sum.settext(0 + ""); checkbox_select_all.setchecked(false); checkbox_add.setclickable(false); } }); checkbox_select_all = (checkbox) findviewbyid(r.id.checkbox_select); checkbox_select_all.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { hashmap<integer, boolean> isselected = shoppingcartadapter .getisselected(); iterator iterator = isselected.entryset().iterator(); list<boolean> array = new arraylist<boolean>();//列表中checkbox选中状态 list<integer> nums = new arraylist<integer>();//列表中商品数量 while (iterator.hasnext()) { hashmap.entry entry = (hashmap.entry) iterator.next(); integer key = (integer) entry.getkey(); boolean val = (boolean) entry.getvalue(); array.add(val); } for (int i = 0; i < data.size(); i++) { int num = data.get(i).getnum(); int integral = integer.valueof(data.get(i).getintegral()); nums.add(num); } if (checkbox_select_all.ischecked()) { for (int i = 0; i < data.size(); i++) { shoppingcartadapter.getisselected().put(i, true); } checkbox_add.setchecked(true); adapter.notifydatasetchanged(); } else { for (int i = 0; i < data.size(); i++) { shoppingcartadapter.getisselected().put(i, false); } checkbox_add.setchecked(false); adapter.notifydatasetchanged(); integral_sum.settext(0 + ""); } } }); mlistview= (listview) findviewbyid(r.id.finance_list); mlistview.setadapter(adapter); mlistview.setonitemclicklistener(new onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { toast.maketext(context, position + "", toast.length_long) .show(); int pos = position - 1; viewholder viewholder = (viewholder) view.gettag(); int num = data.get(pos).getnum(); if (num == 0) { toast.maketext(context, "请选择商品数量", toast.length_long) .show(); } else { boolean cu = !shoppingcartadapter.getisselected().get(pos); shoppingcartadapter.getisselected().put(pos, cu); adapter.notifydatasetchanged(); //遍历获取列表中checkbox的选中状态 hashmap<integer, boolean> isselected = shoppingcartadapter .getisselected(); iterator iterator = isselected.entryset().iterator(); list<boolean> array = new arraylist<boolean>(); while (iterator.hasnext()) { hashmap.entry entry = (hashmap.entry) iterator.next(); integer key = (integer) entry.getkey(); boolean val = (boolean) entry.getvalue(); array.add(val); } if (test.isallfalse(array)) { checkbox_select_all.setchecked(false); checkbox_add.setchecked(false); } if (test.isalltrue(array)) { checkbox_select_all.setchecked(true); checkbox_add.setchecked(true); } if (test.ishaveonefasle(array)) { checkbox_select_all.setchecked(false); } if (test.ishaveonetrue(array)) { checkbox_add.setchecked(true); } } } }); } @suppresslint("handlerleak") private handler handler = new handler(){ @suppresswarnings("unchecked") @override public void handlemessage(message msg) { super.handlemessage(msg); if(msg.what == 10){ //更改选中商品的总价格 float price = (float)msg.obj; if(price > 0){ integral_sum.settext(price+""); }else{ integral_sum.settext("0"); } } else if(msg.what == 11){ //列表选中状态 list<boolean> array = (list<boolean>) msg.obj; if (test.isallfalse(array)) { checkbox_select_all.setchecked(false); checkbox_add.setchecked(false); } if (.isalltrue(array)) { checkbox_select_all.setchecked(true); checkbox_add.setchecked(true); } if (test.ishaveonefasle(array)) { checkbox_select_all.setchecked(false); } if (test.ishaveonetrue(array)) { checkbox_add.setchecked(true); } } } }; |
actvity中xml的代码：
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<?xml version="1.0" encoding="utf-8"?><relativelayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:header=http://schemas.android.com/apk/res/com.sxc.test" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/app_background" android:orientation="vertical" > <com.autoserve.core.widget.headerwidget android:id="@+id/header" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignparenttop="true" header:text="我的购物车" /> <linearlayout android:id="@+id/layout1" android:layout_width="match_parent" android:layout_height="40dp" android:layout_below="@id/header" android:layout_gravity="center" android:layout_margintop="20dp" android:background="@color/white" android:orientation="horizontal" > <linearlayout android:layout_width="0dp" android:layout_height="match_parent" android:layout_marginleft="10dp" android:layout_weight="1" android:gravity="center_vertical" android:orientation="horizontal" > <checkbox android:id="@+id/checkbox_select" style="@style/customcheckboxtheme" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginleft="10dp" android:text="全选" android:textcolor="@color/gry_666666" android:textsize="@dimen/small_size" /> </linearlayout> <linearlayout android:id="@+id/clear" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_marginright="20dp" android:gravity="center_vertical|right" android:orientation="horizontal" > <checkbox android:layout_width="12dp" android:layout_height="12dp" android:background="@drawable/clear" /> <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginleft="5dp" android:text="清空购物车" android:textcolor="#b61d1d" android:textsize="@dimen/small_size" /> </linearlayout> </linearlayout> <linearlayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_below="@id/layout1" android:layout_marginbottom="50dp" android:orientation="vertical" > <view android:layout_width="match_parent" android:layout_height="0.1dp" android:background="@color/divider_color" /> <listview android:id="@+id/finance_list" android:layout_width="match_parent" android:layout_height="match_parent" android:clickable="false" android:divider="@color/lucency" /> <include layout="@layout/include_refresh" android:visibility="gone" /> </linearlayout> <linearlayout android:layout_width="match_parent" android:layout_height="50dp" android:layout_alignparentbottom="true" android:orientation="horizontal" > <linearlayout android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="2" android:background="@color/gry_999999" android:gravity="center_vertical" android:orientation="horizontal" > <linearlayout android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_marginleft="5dp" android:layout_marginright="5dp" android:gravity="center" android:orientation="horizontal" > <checkbox android:id="@+id/checkbox_add" style="@style/customcheckboxtheme2" android:layout_width="wrap_content" android:clickable="false" android:layout_height="wrap_content" /> </linearlayout> <linearlayout android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:gravity="center" android:orientation="horizontal" > <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="合计：" android:textcolor="@color/white" android:textsize="@dimen/small_size" /> <textview android:id="@+id/integral_sum" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginleft="5dp" android:layout_marginright="5dp" android:text="0" android:textcolor="@color/theme_color" android:textsize="@dimen/small_size" /> <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="积分" android:textcolor="@color/white" android:textsize="@dimen/small_size" /> </linearlayout> </linearlayout> <textview android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:background="@color/theme_color" android:gravity="center" android:text="结算" android:textcolor="@color/white" android:textsize="@dimen/small_size" /> </linearlayout></relativelayout> |
-xml中头部可以到网上找一个这里就不放上来了
.checkbox和button的样式可以根据个人喜好设置。
adaper中的代码：
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public class shoppingcartadapter extends baseadapter { private context context; private list<test> loans; private layoutinflater inflater; private static hashmap<integer, boolean> isselected; private static hashmap<integer, integer> numbers; private handler handler; int num;// 商品数量 static class viewholder { // 自定义控件集合 public checkbox ck_select; public imageview pic_goods; public textview id_goods; public textview color_goods; public textview type_goods; public textview integral_goods; public addminuswidget add_minus; public linearlayout layout; public textview number; public button minus; public button plus; } /** * 实例化adapter * * @param context * @param data */ public shoppingcartadapter(context context, handler handler, list<test> data) { this.context = context; this.inflater = layoutinflater.from(context); this.loans = data; this.handler = handler; isselected = new hashmap<integer, boolean>(); numbers = new hashmap<integer, integer>(); initdate(); } private void initdate() { for (int i = 0; i < loans.size(); i++) { getisselected().put(i, false); getnumbers().put(i, 1); } } @override public int getcount() { return loans.size(); } @override public object getitem(int position) { return loans.get(position); } @override public long getitemid(int position) { return position; } @override public view getview(final int position, view convertview, viewgroup parent) { // 自定义视图 viewholder itemview = null; if (convertview == null) { // 获取list_item布局文件的视图 itemview = new viewholder(); convertview = inflater.inflate(r.layout.list_shopping_cart_item, null); // 获取控件对象 itemview.ck_select = (checkbox) convertview .findviewbyid(r.id.ck_select); itemview.pic_goods = (imageview) convertview .findviewbyid(r.id.pic_goods); itemview.id_goods = (textview) convertview .findviewbyid(r.id.id_goods); itemview.color_goods = (textview) convertview .findviewbyid(r.id.color_goods); itemview.type_goods = (textview) convertview .findviewbyid(r.id.type_goods); itemview.integral_goods = (textview) convertview .findviewbyid(r.id.integral_goods); itemview.number = (textview) convertview.findviewbyid(r.id.number); itemview.minus = (button) convertview.findviewbyid(r.id.minus); itemview.plus = (button) convertview.findviewbyid(r.id.plus); convertview.settag(itemview); } else { itemview = (viewholder) convertview.gettag(); } init(itemview, position); itemview.ck_select.setchecked(getisselected().get(position)); itemview.number.settext(getnumbers().get(position).tostring()); if (getisselected().get(position)) { itemview.ck_select.setchecked(true); } else { itemview.ck_select.setchecked(false); } string a = itemview.number.gettext().tostring(); loans.get(position).setnum(integer.valueof(a)); test test = loans.get(position); itemview.id_goods.settext((charsequence) test.getid()); itemview.color_goods.settext((charsequence) test.getcolor()); itemview.type_goods.settext((charsequence) test.gettype()); itemview.integral_goods.settext((charsequence) test.getintegral()); itemview.pic_goods.setimageresource(r.drawable.shopping); return convertview; } private void init(final viewholder itemview, final int position) { itemview.ck_select .setoncheckedchangelistener(new oncheckedchangelistener() { @override public void oncheckedchanged(compoundbutton buttonview, boolean ischecked) { isselected.put(position, true); getisselected().put(position, ischecked); itemview.ck_select.setchecked(getisselected().get( position)); handler.sendmessage(handler.obtainmessage(10, gettotalprice())); iterator iterator = isselected.entryset().iterator(); list<boolean> array = new arraylist<boolean>(); while (iterator.hasnext()) { hashmap.entry entry = (hashmap.entry) iterator .next(); integer key = (integer) entry.getkey(); boolean val = (boolean) entry.getvalue(); array.add(val); } handler.sendmessage(handler.obtainmessage(11, array)); } }); final string numstring = itemview.number.gettext().tostring(); itemview.plus.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { if (numstring == null || numstring.equals("")) { num = 1; itemview.number.settext("1"); } else { if (++num < 1) // 先加，再判断 { num--; toast.maketext(context, "请输入一个大于0的数字", toast.length_short).show(); } else { itemview.number.settext(string.valueof(num)); loans.get(position).setnum(num); numbers.put(position, num); handler.sendmessage(handler.obtainmessage(10, gettotalprice())); log.i("test", "+:" + num); } } } }); itemview.minus.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { if (numstring == null || numstring.equals("")) { num = 1; itemview.number.settext("1"); } else { if (--num < 1) // 先加，再判断 { num++; log.i("test", "-:" + num); toast.maketext(context, "请输入一个大于0的数字", toast.length_short).show(); log.i("test", "-:" + num); } else { itemview.number.settext(string.valueof(num)); log.i("test", "-:" + num); loans.get(position).setnum(num); numbers.put(position, num); handler.sendmessage(handler.obtainmessage(10, gettotalprice())); } } } }); } /** * 计算选中商品的积分 * * @return 返回需要付费的总积分 */ private float gettotalprice() { test bean = null; float totalprice = 0; for (int i = 0; i < loans.size(); i++) { bean = loans.get(i); if (shoppingcartadapter.getisselected().get(i)) { totalprice += bean.getnum() * integer.valueof(bean.getintegral()); } } return totalprice; } public static hashmap<integer, boolean> getisselected() { return isselected; } public static void setisselected(hashmap<integer, boolean> isselected) { shoppingcartadapter.isselected = isselected; } public static hashmap<integer, integer> getnumbers() { return numbers; } public static void setnumbers(hashmap<integer, integer> numbers) { shoppingcartadapter.numbers = numbers; }} |
adapter中的xml代码：
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<?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:descendantfocusability="blocksdescendants" android:background="@color/white" android:orientation="vertical" > <view android:layout_width="match_parent" android:layout_height="0.1dp" android:background="@color/divider_color" /> <linearlayout android:id="@+id/layout5" android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center_vertical" android:orientation="horizontal" android:padding="5dp" > <checkbox android:id="@+id/ck_select" style="@style/customcheckboxtheme" android:layout_width="wrap_content" android:focusable="false" android:layout_height="wrap_content" android:layout_marginright="5dp" /> <imageview android:id="@+id/pic_goods" android:layout_width="wrap_content" android:layout_height="wrap_content" android:scaletype="fitcenter" android:src="@drawable/shopping" /> <linearlayout android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_marginleft="10dp" android:orientation="vertical" > <textview android:id="@+id/id_goods" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="短袜男士星期 polo棉袜潮男秋冬款礼盒装" android:textcolor="@color/gry_999999" android:textsize="@dimen/small_size" /> <linearlayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <linearlayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <linearlayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="颜色：" android:textcolor="@color/gry_999999" android:textsize="12sp" /> <textview android:id="@+id/color_goods" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="黑色" android:textcolor="@color/gry_999999" android:textsize="12sp" /> </linearlayout> <linearlayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="规格：" android:textcolor="@color/gry_999999" android:textsize="12sp" /> <textview android:id="@+id/type_goods" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="普通" android:textcolor="@color/gry_999999" android:textsize="12sp" /> </linearlayout> <linearlayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="所需积分" android:textcolor="@color/theme_color" android:textsize="12sp" /> <textview android:id="@+id/integral_goods" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="1000" android:layout_marginleft="5dp" android:textcolor="@color/theme_color" android:textsize="12sp" /> </linearlayout> </linearlayout> <linearlayout android:layout_width="match_parent" android:layout_height="25dp" android:layout_gravity="bottom" android:layout_marginbottom="5dp" android:layout_marginright="5dp" android:gravity="right" android:orientation="horizontal" > <linearlayout android:layout_width="80dp" android:layout_height="25dp" android:layout_gravity="right" android:background="@color/white" android:orientation="horizontal" > <button android:id="@+id/minus" android:layout_width="25dp" android:layout_height="match_parent" android:background="@drawable/kuangzi1" android:gravity="center" android:focusable="false" android:text="-" android:textcolor="@color/black" > </button> <textview android:id="@+id/number" android:layout_width="30dp" android:layout_height="match_parent" android:background="@drawable/kuangzi1" android:gravity="center" android:inputtype="number" android:text="1" android:textcolor="@color/black" > </textview> <button android:id="@+id/plus" android:layout_width="25dp" android:layout_height="match_parent" android:background="@drawable/kuangzi1" android:gravity="center" android:focusable="false" android:text="+" android:textcolor="@color/black" > </button> </linearlayout> </linearlayout> </linearlayout> </linearlayout> </linearlayout> <view android:layout_width="match_parent" android:layout_height="0.1dp" android:background="@color/divider_color" /></linearlayout> |
实体类：
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package com.autoserve.net33.model;public class test { @override public string tostring() { return "test [id=" + id + ", color=" + color + ", type=" + type + ", integral=" + integral + "]"; } public string getid() { return id; } public void setid(string id) { this.id = id; } public string getcolor() { return color; } public void setcolor(string color) { this.color = color; } public string gettype() { return type; } public void settype(string type) { this.type = type; } public string getintegral() { return integral; } public void setintegral(string integral) { this.integral = integral; } private string id; private string color; private string type; private string integral; private int num;//商品数量 private int sumintegral; private boolean ischoosed; //商品是否在购物车中被选中 public test(string id, string color, string type, string integral) { super(); this.id = id; this.color = color; this.type = type; this.integral = integral; } public test() { super(); } public int getnum() { return num; } public void setnum(int num) { this.num = num; } public int getsumintegral() { return sumintegral; } public void setsumintegral(int sumintegral) { this.sumintegral = sumintegral; } public boolean ischoosed() { return ischoosed; } public void setchoosed(boolean ischoosed) { this.ischoosed = ischoosed; } } |
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