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

	@Override
	public View initView(LayoutInflater inflater) {
		view = inflater.inflate(R.layout.fragment_shopping_cart, null);
		ViewUtils.inject(this, view);
		return view;
	}

	@Override
	public 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Logo
			scItem.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);
		}

	}

	@Override
	public void initListener() {
		cb_select_all.setOnClickListener(this);// 全选
		tv_checkout.setOnClickListener(this);// 结算

	}

	@Override
	public 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;
	}

	@Override
	public 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() {
			@Override
			public 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;
	}

	@Override
	public 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() {
			@Override
			public 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() {
			@Override
			public 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
	}
}