商城app_购物车

最近的项目，用到了商城系统，现在把购物车模块抽取一下，搞个Demo

先看效果：

 

主界面：

/** * 购物车界面 *  * @author shaoshuai *  */public class ShoppingCartPage extends BaseFragment implements OnClickListener {@ViewInject(R.id.lv_shopping_cart)private ListView lv_shopping_cart;// 购物车// 底部条@ViewInject(R.id.cb_select_all)private CheckBox cb_select_all;// 全选@ViewInject(R.id.tv_total)private TextView tv_total;// 总计@ViewInject(R.id.tv_checkout)private TextView tv_checkout;// 结账public static final String FRAGMENT_NAME = "购物车";private SC_ShopAdapter adapter;private List<JsShoppingCartItem> sCartData;private List<JsGoodsItem> selGoodsList = new ArrayList<JsGoodsItem>();// 已经选择的商品集合private float actualPayment;// 实际付款@Overridepublic View initView(LayoutInflater inflater) {view = inflater.inflate(R.layout.fragment_shopping_cart, null);ViewUtils.inject(this, view);return view;}@Overridepublic void initData(Bundle savedInstanceState) {MainActivity orderMange = (MainActivity) getActivity();orderMange.tv_title.setText(FRAGMENT_NAME);getSCData();adapter = new SC_ShopAdapter(this, sCartData);lv_shopping_cart.setAdapter(adapter);Util.setListViewHeight(lv_shopping_cart);}private void getSCData() {sCartData = new ArrayList<JsShoppingCartItem>();for (int i = 0; i < 5; i++) {JsShoppingCartItem scItem = new JsShoppingCartItem();scItem.id = "id";scItem.shopLogo = "商铺图片";// 商铺LogoscItem.shopName = "商铺名称" + i;// 商铺名称scItem.goodsData = new ArrayList<JsGoodsItem>();// 商品数据for (int j = 0; j < i + 1; j++) {scItem.goodsData.add(new JsGoodsItem("商品id", "VIRTUE 摩托电动车双镜片揭面盔全盔半盔冬盔四季安全男女防雾头盔", "颜色分类:黑色;尺码:43","商品图片", 165.00f, 1));}sCartData.add(scItem);}}@Overridepublic void initListener() {cb_select_all.setOnClickListener(this);// 全选tv_checkout.setOnClickListener(this);// 结算}@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.cb_select_all:// 全选boolean flag = cb_select_all.isChecked();for (int i = 0; i < adapter.getSelect().size(); i++) {adapter.getSelect().set(i, flag);for (int j = 0; j < adapter.getPAdapter(i).getSelect().size(); j++) {adapter.getPAdapter(i).getSelect().set(j, flag);}}updateAmount();adapter.notifyDataSetChanged();break;case R.id.tv_checkout:// 结账if (selGoodsList.size() == 0) {Toast.makeText(mContext, "请选择要结算的商品！", Toast.LENGTH_SHORT).show();} else {// 创建订单JsOrderItem order = new JsOrderItem("10101001", "待付款", actualPayment, "订单详情", selGoodsList);// toOrderMGPage(order);Toast.makeText(mContext, "前往结算界面", Toast.LENGTH_SHORT).show();}break;default:break;}}public void checkAll(boolean checked) {cb_select_all.setChecked(checked);}public void updateAmount() {actualPayment = 0.0f;// 金额selGoodsList.clear();for (int i = 0; i < sCartData.size(); i++) {// 对于每个商铺List<JsGoodsItem> goodsData = sCartData.get(i).goodsData;// 商品集合for (int j = 0; j < goodsData.size(); j++) {if (adapter.getPAdapter(i).getSelect().get(j)) {// 第j个商品是否选中selGoodsList.add(goodsData.get(j));// 添加到已选择集合// 总价 += 单个商品价格 * 购买数量;float f = goodsData.get(j).goodsPrice * goodsData.get(j).goodsNum;actualPayment += f;}}}tv_total.setText(actualPayment + "");// 更新金额tv_checkout.setText("结算(" + selGoodsList.size() + ")");}}

适配器：

/** * 购物车-商铺-填充器 *  * @author shaoshuai *  */public class SC_ShopAdapter extends AbsAdapter<JsShoppingCartItem> {private LinkedList<Boolean> selected = new LinkedList<Boolean>();List<SC_GoodsAdapter> pAdapterList = new ArrayList<SC_GoodsAdapter>();ShoppingCartPage sCartPage;public SC_ShopAdapter(ShoppingCartPage scPage, List<JsShoppingCartItem> datas) {super(scPage.getActivity(), datas);this.sCartPage = scPage;selected.clear();for (int i = 0; i < mDatas.size(); i++) {selected.add(false);SC_GoodsAdapter pAdapter = new SC_GoodsAdapter(sCartPage, mDatas.get(i).goodsData, this, i);pAdapterList.add(pAdapter);}}public List<Boolean> getSelect() {return selected;}public SC_GoodsAdapter getPAdapter(int position) {return pAdapterList.get(position);}public List<SC_GoodsAdapter> getPAdapterList() {return pAdapterList;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {ViewHolder holder = null;if (convertView == null) {convertView = LayoutInflater.from(mContext).inflate(R.layout.item_cart_goods, parent, false);holder = new ViewHolder();holder.cb_shop_all = (CheckBox) convertView.findViewById(R.id.cb_shop_all);holder.iv_shop_icon = (ImageView) convertView.findViewById(R.id.iv_shop_icon);holder.tv_shop_name = (TextView) convertView.findViewById(R.id.tv_shop_name);holder.lv_goods = (NoScrollListView) convertView.findViewById(R.id.lv_goods);convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}final JsShoppingCartItem item = (JsShoppingCartItem) getItem(position);holder.iv_shop_icon.setImageResource(R.drawable.shangpu);// 商铺holder.tv_shop_name.setText(item.shopName);// 名称holder.lv_goods.setAdapter(pAdapterList.get(position));// 填充商品holder.cb_shop_all.setChecked(selected.get(position));// 是否全选holder.cb_shop_all.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {selected.set(position, !selected.get(position));// 选中取反// 更新孩子SC_GoodsAdapter goodsAdp = pAdapterList.get(position);// 商品适配器for (int i = 0; i < goodsAdp.getSelect().size(); i++) {// 设置每一个孩子 跟 父亲相同goodsAdp.getSelect().set(i, selected.get(position));}// 更新 购物车 全选按钮if (selected.contains(false)) {sCartPage.checkAll(false);} else {sCartPage.checkAll(true);}sCartPage.updateAmount();notifyDataSetChanged();}});return convertView;}/** * 创建一个本，减少findViewById的次数 */private class ViewHolder {CheckBox cb_shop_all;// 全选ImageView iv_shop_icon;// 商铺图TextView tv_shop_name;// 商铺名NoScrollListView lv_goods;// 商品列表}}

商品适配器

/** * 购物车-商品-填充器 *  * @author shaoshuai *  */public class SC_GoodsAdapter extends AbsAdapter<JsGoodsItem> {private List<Boolean> goodsSelList = new ArrayList<Boolean>();// 商品选择集合private int storePosition;// 商铺索引SC_ShopAdapter adapter;ShoppingCartPage sCartPage;public SC_GoodsAdapter(ShoppingCartPage scPage, List<JsGoodsItem> datas, SC_ShopAdapter adapter, int storePosition) {super(scPage.getActivity(), datas);this.sCartPage = scPage;this.adapter = adapter;this.storePosition = storePosition;for (int j = 0; j < mDatas.size(); j++) {goodsSelList.add(false);}}public List<Boolean> getSelect() {return goodsSelList;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {ViewHolder holder = null;if (convertView == null) {convertView = LayoutInflater.from(mContext).inflate(R.layout.item_order_goods2, parent, false);holder = new ViewHolder();holder.cb_select = (CheckBox) convertView.findViewById(R.id.cb_select);holder.tv_comment = (ImageView) convertView.findViewById(R.id.tv_comment);holder.tv_goods_name = (TextView) convertView.findViewById(R.id.tv_goods_name);holder.tv_goods_des = (TextView) convertView.findViewById(R.id.tv_goods_des);holder.tv_goods_price = (TextView) convertView.findViewById(R.id.tv_goods_price);holder.eas_num = (EditAddSubView) convertView.findViewById(R.id.eas_num);convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}final JsGoodsItem item = (JsGoodsItem) getItem(position);holder.tv_comment.setImageResource(R.drawable.shangpin);// 商品图holder.tv_goods_name.setText(item.goodsName);// 名称holder.tv_goods_des.setText(item.goodsDes);// 详细holder.tv_goods_price.setText("￥" + item.goodsPrice);// 价格holder.eas_num.setNumScope(1, 10);// 设置数值范围holder.eas_num.setNum(item.goodsNum);// 数量holder.eas_num.setOnNumChangeListener(new INumChangeListener() {@Overridepublic void onNumChange(View view, int num) {item.goodsNum = num;sCartPage.updateAmount();// 更新金额}});holder.cb_select.setChecked(goodsSelList.get(position));// 是否选择holder.cb_select.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {goodsSelList.set(position, !goodsSelList.get(position));// 更新商品对应商铺对应的全选按钮if (goodsSelList.contains(false)) {adapter.getSelect().set(storePosition, false);} else {adapter.getSelect().set(storePosition, true);}// 更新购物车，全选按钮if (adapter.getSelect().contains(false)) {sCartPage.checkAll(false);} else {sCartPage.checkAll(true);}sCartPage.updateAmount();// 更新金额adapter.notifyDataSetChanged();}});return convertView;}/** * 创建一个本，减少findViewById的次数 */private class ViewHolder {CheckBox cb_select;// 选择ImageView tv_comment;// 商品图TextView tv_goods_name;// 商品名TextView tv_goods_des;// 商品详情TextView tv_goods_price;// 商品价格EditAddSubView eas_num;// 商品数量}}