android 实现仿美团点菜和京东分类导航
2024-05-24 12:47:36
android 实现仿美团点菜和京东分类导航
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废话不多说，看图说话
当看到标题的时候，每个人都想知道，到底是个什么样子呢？会不会和我想的不一样呢，我会不会有上当呢，看到图之后大家就知道，是实现的一个什么功能了。
一、首先给大家讲解下实现的方式，其实不是很难。
我先给大家看个我画的草图，画的不好，大家勿喷
这张草图是我在写这个的时候，简单的一个思路，看图，应该都能看懂
1、布局，左右分别是listview，我用left和right标识
2、事件，左边listview点击事件(onitemonclick)改变右边的listview的滚动位置，其次右边listview滚动事件(onscrollListener)改变左边listview的位置。
3、右边title的变化，点击左边listview改变，右边滚动到type的时候改变
4、点击加减号的抛物线动画 可以参考我的博客http://blog.csdn.net/mingzhnglei/article/details/54342644
5、购物车的时间，popuview。
6、数据在这里我是用的数据库存储
这么一分析，哎呀，其实也没有那么难吗？对不对。好吧，确实没有那么难
现在看代码
package com.sxwz.myapplication.fragment;
import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.Animation;
import android.view.animation.AnimationSet;
import android.view.animation.LinearInterpolator;
import android.view.animation.TranslateAnimation;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.SectionIndexer;
import android.widget.TextView;
import com.sxwz.myapplication.R;
import com.sxwz.myapplication.adapter.LeftAdapter;
import com.sxwz.myapplication.entity.Cart;
import com.sxwz.myapplication.entity.Product;
import com.sxwz.myapplication.utils.Parser;
import com.sxwz.myapplication.utils.UIHelper;
import com.sxwz.myapplication.utils.Utils;
import java.util.ArrayList;
import java.util.List;
/*****************************************************
* author: wz
* email: wangzhong0116@foxmail.com
* version: 1.0
* date: 2017/1/10 11:54
* description:
*****************************************************/
public class ProductFragment extends Fragmentimplements SectionIndexer, View.OnClickListener {private ListView rightListView; //右侧商品listview
private ListView leftListView; //左侧--商品类型listview
private RightAdapter rightAdapter; //右侧adapter
private LeftAdapter leftAdapter; //左侧adapter
private ImageView shopCart;//购物车
private View cartFrame;
private TextView buyNumView;//购物车上的数量标签
private TextView mPriceSumView;
//private View cartView;
private TextView selectedView;
private View titleLayout;
private TextView title;
private ListView popuListView;
/**
* 上次第一个可见元素，用于滚动时记录标识。
*/
private int lastFirstVisibleItem = -1;
private List<Product> mProductList;
private List<Cart> mCartList = new ArrayList<Cart>();
private ViewGroup anim_mask_layout;//动画层
private int buyNum = 0;//购买数量
private int count = 0;
private double priceSum = 0.0;
/**
* 在这里虚构个商家id，其主要目的是不想让大家走更多的弯路
*/
private int businessId = 0;
/**
* 上次选中的左侧菜单
*/
private View lastView;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {View view = inflater.inflate(R.layout.product_list, null);
initView(view);
initClick();
initData();
return view;
}private void initView(View view) {titleLayout = view.findViewById(R.id.title_layout);
title = (TextView) view.findViewById(R.id.title_layout_catalog);
rightListView = (ListView) view.findViewById(R.id.menu_lvmenu);
shopCart = (ImageView) view.findViewById(R.id.iv_add_cart);//购物车
cartFrame = view.findViewById(R.id.cart_frame);
buyNumView = (TextView) view.findViewById(R.id.tv_count_price);//购物车上的数量标签
mPriceSumView = (TextView) view.findViewById(R.id.price_sum_view);
selectedView = (TextView) view.findViewById(R.id.selected_view);
leftListView = (ListView) view.findViewById(R.id.side_menu_lv);
}private void initClick() {cartFrame.setOnClickListener(this);
selectedView.setOnClickListener(this);
//左侧类型点击对应右侧商品
leftListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {if (lastView != null) {//上次选中的view变回灰色
lastView.setBackgroundColor(getResources().getColor(R.color.frament_tab_color));
}//设置选中颜色为白色
view.setBackgroundColor(getResources().getColor(R.color.white));
//点击左侧，右侧滚动到对应的位置
TextView section_tv = (TextView) view.findViewById(R.id.section_tv);
int location = rightAdapter.getPositionForSection((Integer.parseInt(section_tv.getText().toString())));
if (location != -1) {rightListView.setSelection(location);
}lastView = view;
}});
}/**
* 初始化数据
*/
private void initData() {mProductList = Parser.getCateProductList(getActivity());
rightAdapter = new RightAdapter(getActivity(), mProductList);
leftAdapter = new LeftAdapter(getActivity(), mProductList);
rightListView.setAdapter(rightAdapter);
leftListView.setAdapter(leftAdapter);
rightListView.setOnScrollListener(mOnScrollListener);
//此处为判断是否为空
// if (mProductList==null){
//
// }
}/**
* 右侧商品滑动对于左侧类型
*/
private AbsListView.OnScrollListener mOnScrollListener = new AbsListView.OnScrollListener() {@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {}@Override
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {try {//获取屏幕第一个item的section
int section = getSectionForPosition(firstVisibleItem);
int nextSection = 0;
if (mProductList.size() > 1) {nextSection = getSectionForPosition(firstVisibleItem + 1);
}int nextSecPosition = getPositionForSection(+nextSection);
if (firstVisibleItem != lastFirstVisibleItem) {ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) titleLayout
.getLayoutParams();
params.topMargin = 0;
titleLayout.setLayoutParams(params);
title.setText(mProductList.get(getPositionForSection(section)).getType());
if (lastView != null) {lastView.setBackgroundColor(getResources().getColor(R.color.frament_tab_color));
}lastView = leftListView.getChildAt(section);
lastView.setBackgroundColor(getResources().getColor(R.color.white));
}if (nextSecPosition == firstVisibleItem + 1) {View childView = view.getChildAt(0);
if (childView != null) {int titleHeight = titleLayout.getHeight();
int bottom = childView.getBottom();
ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams) titleLayout
.getLayoutParams();
if (bottom < titleHeight) {float pushedDistance = bottom - titleHeight;
params.topMargin = (int) pushedDistance;
titleLayout.setLayoutParams(params);
} else {if (params.topMargin != 0) {params.topMargin = 0;
titleLayout.setLayoutParams(params);
}}}}lastFirstVisibleItem = firstVisibleItem;
} catch (NullPointerException e) {e.printStackTrace();
} catch (Exception e) {e.printStackTrace();
}}};
@Override
public Object[] getSections() {return null;
}@Override
public int getPositionForSection(int sectionIndex) {for (int i = 0; i < mProductList.size(); i++) {int section = mProductList.get(i).getSeleteId();
if (section == sectionIndex) {return i;
}}return -1;
}@Override
public int getSectionForPosition(int i) {return mProductList.get(i).getSeleteId();
}/**
* 创建动画层
* @return
*/
private ViewGroup createAnimLayout() {ViewGroup rootView = (ViewGroup) getActivity().getWindow().getDecorView();
LinearLayout animLayout = new LinearLayout(getActivity());
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.MATCH_PARENT);
animLayout.setLayoutParams(lp);
animLayout.setId(Integer.MAX_VALUE - 1);
animLayout.setBackgroundResource(android.R.color.transparent);
rootView.addView(animLayout);
return animLayout;
}private View addViewToAnimLayout(final ViewGroup parent, final View view,
int[] location) {int x = location[0];
int y = location[1];
LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
lp.leftMargin = x;
lp.topMargin = y;
view.setLayoutParams(lp);
return view;
}public void setAnim(final View v, int[] startLocation) {anim_mask_layout = null;
anim_mask_layout = createAnimLayout();
anim_mask_layout.addView(v);//把动画小球添加到动画层
final View view = addViewToAnimLayout(anim_mask_layout, v,
startLocation);
int[] endLocation = new int[2];// 存储动画结束位置的X、Y坐标
//TODO 这里需要进行判断购物车是否存在
shopCart.getLocationInWindow(endLocation);// shopCart是那个购物车
// 计算位移
int endX = 0 - startLocation[0] + 20;// 动画位移的X坐标
int endY = endLocation[1] - startLocation[1];// 动画位移的y坐标
System.out.println("=====x==="+endX);
System.out.println("=====y==="+endY);
TranslateAnimation translateAnimationX = new TranslateAnimation(0,
endX, 0, 0);
translateAnimationX.setInterpolator(new LinearInterpolator()); //让动画已均匀的速度改变
translateAnimationX.setRepeatCount(0);// 动画重复执行的次数
translateAnimationX.setFillAfter(true); //执行完毕，利用视图setLayoutParams来重新定位
TranslateAnimation translateAnimationY = new TranslateAnimation(0, 0,
0, endY);
translateAnimationY.setInterpolator(new AccelerateInterpolator());
translateAnimationY.setRepeatCount(0);// 动画重复执行的次数
translateAnimationX.setFillAfter(true);
AnimationSet set = new AnimationSet(false);
set.setFillAfter(false);
set.addAnimation(translateAnimationY);
set.addAnimation(translateAnimationX);
set.setDuration(800);// 动画的执行时间
view.startAnimation(set);
// 动画监听事件
set.setAnimationListener(new Animation.AnimationListener() {// 动画的开始
@Override
public void onAnimationStart(Animation animation) {v.setVisibility(View.VISIBLE);
}@Override
public void onAnimationRepeat(Animation animation) {// TODO Auto-generated method stub
}// 动画的结束
@Override
public void onAnimationEnd(Animation animation) {v.setVisibility(View.GONE);
addCart();
}});
}private void addCart() {buyNum++;//让购买数量+1
showSeleted();
}public void removeCart() {buyNum--;//让购买数量-1
showSeleted();
}private void showSeleted() {if (buyNum > 0) {buyNumView.setVisibility(View.VISIBLE);
buyNumView.setText(buyNum + "");
mPriceSumView.setText("共￥:" + convert(priceSum));
mPriceSumView.setTextColor(getResources().getColor(R.color.big_red));
if (priceSum > 12) {selectedView.setEnabled(true);
selectedView.setText("选好了");
selectedView.setBackgroundResource(R.drawable.bg_choice_press_round);
} else {selectedView.setEnabled(false);
selectedView.setText("￥15起送");
selectedView.setBackgroundResource(R.drawable.bg_choice_round);
}shopCart.setImageResource(R.mipmap.cart13);
cartFrame.setEnabled(true);
//selectedView.setVisibility(View.VISIBLE);
} else {mPriceSumView.setText("请点餐~");
mPriceSumView.setTextColor(getResources().getColor(R.color.cart_choice_color));
selectedView.setEnabled(false);
selectedView.setText("￥15起送");
selectedView.setBackgroundResource(R.drawable.bg_choice_round);
shopCart.setImageResource(R.mipmap.cart12);
buyNumView.setVisibility(View.GONE);
if (popupWindow != null) {popupWindow.dismiss();
}cartFrame.setEnabled(false);
//selectedView.setVisibility(View.GONE);
}}@Override
public void onClick(View v) {switch (v.getId()) {case R.id.selected_view:break;
case R.id.iv_add_cart:initPopWindow();
break;
case R.id.cart_frame:initPopWindow();
break;
case R.id.cart_clear_view://clear cart === hide cart list
break;
default:break;
}}popuwindow part
private PopupWindow popupWindow;
private void initPopWindow() {View contentView = LayoutInflater.from(getActivity()).inflate(R.layout.popu_cart, null);
int height = Utils.getScreenHeight(getActivity()) - (cartFrame.getHeight()*2) + 10;
popupWindow = new PopupWindow(contentView, Utils.getScreenWidth(getActivity()),
height);
popupWindow.setContentView(contentView);
//cart view init
View clearView = contentView.findViewById(R.id.cart_clear_view);
clearView.setOnClickListener(new View.OnClickListener() {@Override
public void onClick(View v) {UIHelper.clearCart(getActivity(), businessId);
cartFrame.setEnabled(false);
popupWindow.dismiss();
rightAdapter.notifyDataSetChanged();
leftAdapter.notifyDataSetChanged();
priceSum = 0.0;
buyNum = 0;
showSeleted();
}});
popuListView = (ListView) contentView.findViewById(R.id.cart_list);
getCart(popuListView);
popupWindow.setFocusable(true);
popupWindow.setTouchInterceptor(new View.OnTouchListener() {@Override
public boolean onTouch(View v, MotionEvent event) {return false;
}});
View empView = contentView.findViewById(R.id.content_view);
empView.setOnClickListener(new View.OnClickListener() {@Override
public void onClick(View v) {popupWindow.dismiss();
}});
// popupWindow.setOnDismissListener();
ColorDrawable dw = new ColorDrawable(getResources().getColor(R.color.ban_tou));
popupWindow.setBackgroundDrawable(dw);
popupWindow.getBackground().setAlpha(100);
popupWindow.setAnimationStyle(R.style.mypopwindow_anim_style);
popupWindow.showAsDropDown(cartFrame);
}private CartAdapter cartAdapter = null;
private void getCart(ListView listView) {mCartList = UIHelper.getCartList(getActivity(), businessId);
cartAdapter = new CartAdapter(getActivity(), mCartList);
listView.setAdapter(cartAdapter);
}private void updateCart(Product mProduct) {//TODO 这里需要进行判断购物车是否存在 如果存在 则显示动画，否则第一次不显示动画
int productId = mProduct.getProductId();
String name = mProduct.getFoodName();
double price = mProduct.getFoodPrice();
Cart cart = new Cart();
cart.setName(name);
cart.setProductId(productId);
cart.setSaleCount(count);
cart.setPrice(price);
UIHelper.getQueryIdCart(getActivity(), cart, productId,businessId);
}private void deleteProductId(int productId) {UIHelper.deleteCart(getActivity(), productId);
}/product adapter
class RightAdapter extends BaseAdapter implements SectionIndexer {private List<Product> list = null;
private Context mContext;
public RightAdapter(Context mContext, List<Product> list) {this.mContext = mContext;
this.list = list;
}@Override
public int getCount() {// TODO Auto-generated method stub
return this.list.size();
}@Override
public Object getItem(int position) {// TODO Auto-generated method stub
return list.get(position);
}@Override
public long getItemId(int position) {// TODO Auto-generated method stub
return position;
}@Override
public View getView(int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stub
final ViewProductHolder viewProductHolder;
final Product mProduct = list.get(position);
if (convertView == null) {convertView = LayoutInflater.from(mContext).inflate(R.layout.product_item, null);
TextView tvTag = (TextView) convertView.findViewById(R.id.cate_name);
TextView tvSalecount = (TextView) convertView.findViewById(R.id.product_salecount_view);
TextView tvTitle = (TextView) convertView.findViewById(R.id.product_name_view);
ImageView productImage = (ImageView) convertView.findViewById(R.id.product_imageView);
TextView countView = (TextView) convertView.findViewById(R.id.add_count_view);
TextView tvPrice = (TextView) convertView.findViewById(R.id.product_price_view);
ImageView removeProductImage = (ImageView) convertView.findViewById(R.id.delete_product_view);
ImageView addProductImage = (ImageView) convertView.findViewById(R.id.add_product_view);
viewProductHolder = new ViewProductHolder(tvTag, tvSalecount, tvTitle, productImage, countView, tvPrice, removeProductImage, addProductImage);
convertView.setTag(viewProductHolder);
} else {viewProductHolder = (ViewProductHolder) convertView.getTag();
}//如果有该类型，则隐藏
int section = getSectionForPosition(position);
if (position == getPositionForSection(section)) {viewProductHolder.tvTag.setVisibility(View.VISIBLE);
viewProductHolder.tvTag.setText(mProduct.getType());
} else {viewProductHolder.tvTag.setVisibility(View.GONE);
}viewProductHolder.tvTitle.setText(mProduct.getFoodName());
viewProductHolder.tvPrice.setText("￥" + mProduct.getFoodPrice());
viewProductHolder.tvSalecount.setText("已售" + mProduct.getSalesCount() + "份");
int salecount = UIHelper.saleCount(getActivity(), mProduct.getProductId(), businessId);
if (salecount > 0) {viewProductHolder.countView.setText(salecount + "");
viewProductHolder.countView.setVisibility(View.VISIBLE);
viewProductHolder.removeProductImage.setVisibility(View.VISIBLE);
} else {viewProductHolder.countView.setText(0 + "");
viewProductHolder.countView.setVisibility(View.GONE);
viewProductHolder.removeProductImage.setVisibility(View.GONE);
}//此处可以设置商品的图片========请在使用的过程中自行替换
String url = mProduct.getImageUrl();
viewProductHolder.productImage.setImageResource(R.mipmap.default_icon);
viewProductHolder.removeProductImage.setOnClickListener(new View.OnClickListener() {@Override
public void onClick(View v) {count = Integer.parseInt(viewProductHolder.countView.getText().toString());
count--;
priceSum = priceSum - mProduct.getFoodPrice();
if (count < 1) {viewProductHolder.removeProductImage.setVisibility(View.GONE);
viewProductHolder.countView.setVisibility(View.GONE);
}viewProductHolder.countView.setText(count + "");
mProduct.setCount(count);
if (count == 0) {deleteProductId(mProduct.getProductId());
} else {updateCart(mProduct);
}removeCart();
leftAdapter.notifyDataSetChanged();
//cartTotal(priceSum);
}});
viewProductHolder.addProductImage.setOnClickListener(new View.OnClickListener() {@Override
public void onClick(View v) {count = Integer.parseInt(viewProductHolder.countView.getText().toString());
count++;
priceSum = priceSum + mProduct.getFoodPrice();
viewProductHolder.countView.setVisibility(View.VISIBLE);
viewProductHolder.removeProductImage.setVisibility(View.VISIBLE);
viewProductHolder.countView.setText(count + "");
mProduct.setCount(count);
int[] startLocation = new int[2];// 一个整型数组，用来存储按钮的在屏幕的X、Y坐标
v.getLocationInWindow(startLocation);// 这是获取购买按钮的在屏幕的X、Y坐标（这也是动画开始的坐标）
ImageView ball = new ImageView(mContext);// buyImg是动画的图片，我的是一个小球
ball.setImageResource(R.mipmap.icon_fansnum_like_on);// 设置buyImg的图片
updateCart(mProduct);
setAnim(ball, startLocation);
leftAdapter.notifyDataSetChanged();
//cartTotal(priceSum);
}});
return convertView;
}private class ViewProductHolder {TextView tvTag, tvSalecount, tvTitle;//,tvPrice,countView
ImageView productImage;//,removeProductImage,addProductImage
private final TextView countView;
private final TextView tvPrice;
private final ImageView removeProductImage;
private final ImageView addProductImage;
private ViewProductHolder(TextView tvTag, TextView tvSalecount, TextView tvTitle, ImageView productImage, TextView countView, TextView tvPrice, ImageView removeProductImage, ImageView addProductImage) {this.tvTag = tvTag;
this.tvSalecount = tvSalecount;
this.tvTitle = tvTitle;
this.productImage = productImage;
this.countView = countView;
this.tvPrice = tvPrice;
this.removeProductImage = removeProductImage;
this.addProductImage = addProductImage;
}}@Override
public int getSectionForPosition(int position) {return list.get(position).getSeleteId();
}/**
* 查询api可以得知
* 根据分类列的索引号获得该序列的首个位置
* @param sectionIndex
* @return
*/
@Override
public int getPositionForSection(int sectionIndex) {for (int i = 0; i < getCount(); i++) {int section = list.get(i).getSeleteId();
if (section == sectionIndex) {return i;
}}return -1;
}@Override
public Object[] getSections() {// TODO 自动生成的方法存根
return null;
}}/cart adapter
class CartAdapter extends BaseAdapter {private List<Cart> list = null;
private Context mContext;
public CartAdapter(Context mContext, List<Cart> list) {this.mContext = mContext;
this.list = list;
}@Override
public int getCount() {// TODO Auto-generated method stub
return this.list.size();
}@Override
public Object getItem(int position) {// TODO Auto-generated method stub
return list.get(position);
}@Override
public long getItemId(int position) {// TODO Auto-generated method stub
return position;
}@Override
public View getView(final int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stub
final ViewHolder viewHolder;
final Cart mCart = list.get(position);
if (convertView == null) {convertView = LayoutInflater.from(mContext).inflate(R.layout.cart_item, null);
TextView tvname = (TextView) convertView.findViewById(R.id.product_name_view);
TextView countView = (TextView) convertView.findViewById(R.id.add_count_view);
TextView totalPrice = (TextView) convertView.findViewById(R.id.product_totle_price_view);
ImageView removeProductImage = (ImageView) convertView.findViewById(R.id.remove_product_view);
ImageView addProductImage = (ImageView) convertView.findViewById(R.id.add_product_view);
viewHolder = new ViewHolder(tvname, countView, totalPrice, removeProductImage, addProductImage);
convertView.setTag(viewHolder);
} else {viewHolder = (ViewHolder) convertView.getTag();
}viewHolder.tvname.setText(mCart.getName());
viewHolder.totalPrice.setText("￥" + mCart.getPrice());
viewHolder.countView.setText(String.valueOf(mCart.getSaleCount()));
if (Integer.parseInt(viewHolder.countView.getText().toString()) < 1) {viewHolder.removeProductImage.setVisibility(View.GONE);
viewHolder.countView.setVisibility(View.GONE);
} else {viewHolder.removeProductImage.setVisibility(View.VISIBLE);
viewHolder.countView.setVisibility(View.VISIBLE);
}viewHolder.removeProductImage.setOnClickListener(new View.OnClickListener() {@Override
public void onClick(View v) {count = Integer.parseInt(viewHolder.countView.getText().toString());
count--;
priceSum = priceSum - mCart.getPrice();
if (count < 1) {viewHolder.removeProductImage.setVisibility(View.GONE);
viewHolder.countView.setVisibility(View.GONE);
}viewHolder.countView.setText(count + "");
removeCart();
//cartTotal(priceSum);
if (count < 1) {deleteProductId(mCart.getProductId());
deleteData();
} else {mCartList.get(position).setSaleCount(count);
updateCart(mCart);
rightAdapter.notifyDataSetChanged();
}leftAdapter.notifyDataSetChanged();
}});
viewHolder.addProductImage.setOnClickListener(new View.OnClickListener() {@Override
public void onClick(View v) {count = Integer.parseInt(viewHolder.countView.getText().toString());
count++;
priceSum = priceSum + mCart.getPrice();
viewHolder.countView.setVisibility(View.VISIBLE);
viewHolder.removeProductImage.setVisibility(View.VISIBLE);
viewHolder.countView.setText(count + "");
//TODO 这里需要进行判断购物车是否存在 如果存在 则显示动画，否则第一次不显示动画
updateCart(mCart);
addCart();
//cartTotal(priceSum);
mCartList.get(position).setSaleCount(count);
rightAdapter.notifyDataSetChanged();
leftAdapter.notifyDataSetChanged();
}});
return convertView;
}private void deleteData() {try {mCartList = UIHelper.getCartList(getActivity(), businessId);
popuListView.setAdapter(new CartAdapter(getActivity(), mCartList));
rightAdapter.notifyDataSetChanged();
} catch (Exception e) {e.printStackTrace();
}}private void updateCart(Cart mCart) {int productId = mCart.getProductId();
String name = mCart.getName();
double price = mCart.getPrice();
Cart cart = new Cart();
cart.setProductId(productId);
cart.setName(name);
cart.setSaleCount(count);
cart.setPrice(price);
cart.setBusinessId(businessId);
UIHelper.getQueryIdCart(getActivity(), cart, productId,businessId);
}private class ViewHolder {TextView tvname;
private final TextView countView;
private final ImageView removeProductImage;
private final ImageView addProductImage;
private final TextView totalPrice;
private ViewHolder(TextView tvname, TextView countView, TextView totalPrice, ImageView removeProductImage, ImageView addProductImage) {this.tvname = tvname;
this.countView = countView;
this.totalPrice = totalPrice;
this.removeProductImage = removeProductImage;
this.addProductImage = addProductImage;
}}}static double convert(double value) {long l1 = Math.round(value * 100); //四舍五入
double ret = l1 / 100.0; //注意：使用 100.0 而不是 100
return ret;
}@Override
public void onDestroy() {super.onDestroy();
UIHelper.clearCart(getActivity(), businessId);
}
}
左边liewview的adapter
package com.sxwz.myapplication.adapter;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import com.sxwz.myapplication.R;
import com.sxwz.myapplication.entity.Product;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
/*****************************************************
* author: wz
* email: wangzhong0116@foxmail.com
* version: 1.0
* date: 2017/1/10 17:50
* description: 左侧商品类型适配器
*****************************************************/
public class LeftAdapter extends BaseAdapter {private List<MenuTagSection> list = null;
private Context mContext;
public LeftAdapter(Context mContext, List<Product> list) {this.mContext = mContext;
this.list = getTagSections(list);
}@Override
public int getCount() {return this.list.size();
}@Override
public Object getItem(int position) {return list.get(position);
}@Override
public long getItemId(int position) {return position;
}@Override
public View getView(int position, View convertView, ViewGroup parent) {ViewHolder viewHolder = null;
final MenuTagSection mContent = list.get(position);
if (convertView == null) {viewHolder = new ViewHolder();
convertView = LayoutInflater.from(mContext).inflate(R.layout.product_menu_item, null);
viewHolder.tvTag = (TextView) convertView.findViewById(R.id.menu_tag_tv);
viewHolder.tvSection = (TextView) convertView.findViewById(R.id.section_tv);
convertView.setTag(viewHolder);
} else {viewHolder = (ViewHolder) convertView.getTag();
}Log.i("fuck_getview", "success");
viewHolder.tvSection.setText(String.valueOf(mContent.getMenuSection()));
viewHolder.tvTag.setText(mContent.getMenuTag());
return convertView;
}final static class ViewHolder {TextView tvTag;
TextView tvSection;
}final static class MenuTagSection {String menuTag;
int menuSection;
public String getMenuTag() {return menuTag;
}public int getMenuSection() {return menuSection;
}public MenuTagSection(String menuTag, int menuSection) {this.menuTag = menuTag;
this.menuSection = menuSection;
}@Override
public boolean equals(Object o) {MenuTagSection mts = (MenuTagSection) o;
return menuTag.equals(mts.menuTag) && (menuSection == mts.menuSection);
}@Override
public int hashCode() {String in = menuSection + menuTag;
return in.hashCode();
}}/**
* 此处遍历商品去掉相同的商品类型
* 显示商品类型
* 左边菜单-----类型
* @param list
* @return
*/
private List<MenuTagSection> getTagSections(List<Product> list) {List<MenuTagSection> mtsList = new ArrayList<MenuTagSection>();
for (int i = 0; i < list.size(); i++) {if (!mtsList.contains(new MenuTagSection(list.get(i).getType(), list.get(i).getSeleteId()))) {mtsList.add(new MenuTagSection(list.get(i).getType(), list.get(i).getSeleteId()));
}}//去除重复
Set<MenuTagSection> ts = new HashSet<MenuTagSection>();
List<MenuTagSection> newMtsList = new ArrayList<MenuTagSection>();
for (Iterator<MenuTagSection> iter = mtsList.iterator(); iter.hasNext(); ) {MenuTagSection ele = iter.next();
if (ts.add(ele)) {newMtsList.add(ele);
}}return newMtsList;
}}
唉。。。。。
感觉这么一一的贴代码也不是个事，万一少贴了一点，其不是要报错。我相信绝大部分的童鞋都不希望这样，都希望直接给个demo下载地址多好呀。
你们的想法实现了，我确实也不想一一贴了，还是直接来下载地址吧 http://download.csdn.net/detail/mingzhnglei/9734768
声明下在我在demo里使用的是我的一个开源库
https://github.com/rocky0116/orderDishes
https://github.com/rocky0116/QuickDevelopApp 欢迎大家fork or starcompile 'com.sxwz.qcodelib:qcodelib:1.0.1'
有兴趣的朋友可以去看看，记得关注我
http://blog.csdn.net/mingzhnglei/article/details/54133673
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