刷新购物车的操作以及创建订单
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//在查询购物车的适配器中写访问刷新购物车的方法 并且在每次对购物车进行操作的时候 例如全选反选 一级列表改变 二级列表改变 数量改变等等 调用一下刷新购物车的方法
package com.bwei.administrator.week_3.adapter;import android.content.Context;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.ViewGroup;import android.widget.BaseExpandableListAdapter;import android.widget.CheckBox;import android.widget.ImageView;import android.widget.TextView;import com.bumptech.glide.Glide;import com.bwei.administrator.week_3.R;import com.bwei.administrator.week_3.bean.CartBean;import com.bwei.administrator.week_3.okutil.OkHttpUtil;import java.io.IOException;import java.util.HashMap;import java.util.List;import java.util.Map;import okhttp3.Call;import okhttp3.Callback;import okhttp3.Response;/** * Created by Administrator on 2017/12/18. */public class MyExpandAdapter extends BaseExpandableListAdapter { Context context; List<CartBean.DataBean> groupData; Handler handler; public MyExpandAdapter(Context context, List<CartBean.DataBean> groupData, Handler handler) { this.context = context; this.groupData = groupData; this.handler=handler; } @Override public int getGroupCount() { return groupData.size(); } @Override public int getChildrenCount(int groupPosition) { return groupData.get(groupPosition).getList().size(); } @Override public Object getGroup(int groupPosition) { return groupData.get(groupPosition); } @Override public Object getChild(int groupPosition, int childPosition) { return groupData.get(groupPosition).getList().get(childPosition); } @Override public long getGroupId(int groupPosition) { return groupPosition; } @Override public long getChildId(int groupPosition, int childPosition) { return childPosition; } @Override public boolean hasStableIds() { return true; } @Override public View getGroupView(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { final GroupHolder holder; if(convertView==null){ convertView=View.inflate(context, R.layout.group_item_layout,null); holder=new GroupHolder(); holder.check_group= (CheckBox) convertView.findViewById(R.id.check_group); holder.text_group= (TextView) convertView.findViewById(R.id.text_group); convertView.setTag(holder); }else { holder= (GroupHolder) convertView.getTag(); } //设置值 //判断子条目是否都是1 boolean a = isAllChildSelected(groupPosition); groupData.get(groupPosition).setGroupChecked(a); holder.check_group.setChecked(groupData.get(groupPosition).isGroupChecked()); holder.text_group.setText(groupData.get(groupPosition).getSellerName()); //checkbox的点击事件 holder.check_group.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //首先自身变为相反 groupData.get(groupPosition).setGroupChecked(!groupData.get(groupPosition).isGroupChecked()); //2.2根据当前一级的状态,改变该组里面二级列表的状态 changeChildState(groupPosition,groupData.get(groupPosition).isGroupChecked()); //2.3通过判断所有的一级组是否选中,来决定是否全选选中 changeAllState(isAllGroupChecked()); ///价格 countPrice(); notifyDataSetChanged(); } }); return convertView; } /* * 改变全选反选的状态 * */ private void changeAllState(boolean allGroupChecked) { //将布尔值传给activity Message msg=Message.obtain(); msg.what=1; msg.obj=allGroupChecked; handler.sendMessage(msg); } //判断是否所有组都被选中 private boolean isAllGroupChecked() { for (int i=0;i<groupData.size();i++){ if(groupData.get(i).isGroupChecked()==false){ return false; } } return true; } /* * 根据一级的改变 改变他的自条目 * */ private void changeChildState(int groupPosition, boolean groupChecked) { for (int i=0;i<groupData.get(groupPosition).getList().size();i++){ List<CartBean.DataBean.ListBean> list = groupData.get(groupPosition).getList(); //调用刷新购物车的方法 CartBean.DataBean.ListBean listBean = list.get(i); getRefreshCartData(listBean); list.get(i).setSelected(groupChecked?1:0); } } @Override public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View view, ViewGroup parent) { ChildHolder holder; if (view == null){ view = View.inflate(context, R.layout.child_item_layout,null); holder = new ChildHolder(); holder.text_add = (TextView) view.findViewById(R.id.text_add); holder.text_num = (TextView) view.findViewById(R.id.text_num); holder.text_jian = (TextView) view.findViewById(R.id.text_jian); holder.text_title = (TextView) view.findViewById(R.id.text_title); holder.text_price = (TextView) view.findViewById(R.id.text_price); holder.image_good = (ImageView) view.findViewById(R.id.image_good); holder.check_child = (CheckBox) view.findViewById(R.id.check_child); view.setTag(holder); }else { holder = (ChildHolder) view.getTag(); } //设置值 final List<CartBean.DataBean.ListBean> list = groupData.get(groupPosition).getList(); holder.text_num.setText(list.get(childPosition).getNum()+"");//......注意 holder.text_price.setText("¥"+list.get(childPosition).getPrice()); holder.text_title.setText(list.get(childPosition).getTitle()); //设置check的选中状态 holder.check_child.setChecked(list.get(childPosition).getSelected()==1? true:false); Glide.with(context).load(list.get(childPosition).getImages().split("\\|")[0]).into(holder.image_good); //子条目的点击事件 holder.check_child.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //首先自身改变 list.get(childPosition).setSelected(list.get(childPosition).getSelected()==1?0:1); //判断当前子条目是否选中 进行改变组的状态 if(list.get(childPosition).getSelected()==1){ //判断一下当前组中所有的子条目是否全部选中 if (isAllChildSelected(groupPosition)){ //如果全部选中改变一下当前组的状态 changeGroupState(groupPosition,true); //.确定是否改变全选 changeAllState(isAllGroupChecked()); } }else { //如果没有选中改变一下当前组的状态 changeGroupState(groupPosition,false); //.确定是否改变全选 changeAllState(isAllGroupChecked()); } CartBean.DataBean.ListBean listBean = list.get(childPosition); getRefreshCartData(listBean); //价格 countPrice(); //刷新 notifyDataSetChanged(); } }); //加号的点击事件 holder.text_add.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { list.get(childPosition).setNum(list.get(childPosition).getNum() +1); //价格变化 if(list.get(childPosition).getSelected()==1){ CartBean.DataBean.ListBean listBean = list.get(childPosition); getRefreshCartData(listBean); countPrice(); } notifyDataSetChanged(); } }); holder.text_jian.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if(list.get(childPosition).getNum()==1){ return; } list.get(childPosition).setNum(list.get(childPosition).getNum() -1); //价格变化 if(list.get(childPosition).getSelected()==1){ CartBean.DataBean.ListBean listBean = list.get(childPosition); getRefreshCartData(listBean); countPrice(); } notifyDataSetChanged(); } }); countPrice(); return view; } private void changeGroupState(int groupPosition, boolean b) { groupData.get(groupPosition).setGroupChecked(b); } private boolean isAllChildSelected(int groupPosition) { for(int i=0;i<groupData.get(groupPosition).getList().size();i++){ if(groupData.get(groupPosition).getList().get(i).getSelected()==0){ return false; } } return true; } @Override public boolean isChildSelectable(int groupPosition, int childPosition) { return true; } /* * * 点击全选按钮 * */ public void checkAll(boolean checked) { //遍历组 for(int i=0;i<groupData.size();i++){ groupData.get(i).setGroupChecked(checked); //遍历子 List<CartBean.DataBean.ListBean> list = groupData.get(i).getList(); for (int j=0;j<list.size();j++){ list.get(j).setSelected(checked? 1:0); CartBean.DataBean.ListBean listBean = list.get(j); getRefreshCartData(listBean); } } //计算价格 countPrice(); //刷新 notifyDataSetChanged(); } /* * 计算价格 * */ private void countPrice() { double price=0; for (int i=0;i<groupData.size();i++){ List<CartBean.DataBean.ListBean> list = groupData.get(i).getList(); for (int j=0;j<list.size();j++){ if(list.get(j).getSelected()==1){ price+=list.get(j).getPrice()*list.get(j).getNum(); } } } //将价格发送到activity Message msg = Message.obtain(); msg.what=0; msg.obj=price; handler.sendMessage(msg); } private class GroupHolder{ CheckBox check_group; TextView text_group; } private class ChildHolder{ CheckBox check_child; ImageView image_good; TextView text_title; TextView text_price; TextView text_jian; TextView text_num; TextView text_add; } //更新购物车的方法 public void getRefreshCartData(CartBean.DataBean.ListBean listBean){ //https://www.zhaoapi.cn/product/updateCarts?uid=71&sellerid=1&pid=1&selected=0&num=10 String path ="https://www.zhaoapi.cn/product/updateCarts"; Map<String, String> parmas = new HashMap<>(); parmas.put("uid",2776+""); parmas.put("sellerid",listBean.getSellerid()+""); parmas.put("pid",listBean.getPid()+""); parmas.put("selected",listBean.getSelected()+""); parmas.put("num",listBean.getNum()+""); OkHttpUtil.doPost(path, parmas, new Callback() { @Override public void onFailure(Call call, IOException e) { } @Override public void onResponse(Call call, Response response) throws IOException { if(response.isSuccessful()){ } } }); }}=========activity中点击结算按钮跳转创建订单的页面 将价格传过去=========
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2); Intent intent = getIntent(); final String price = intent.getStringExtra("price"); //获取控件 kuan = (TextView) findViewById(R.id.text_kuan); kuan.setText("实付款:"+price); order = (TextView) findViewById(R.id.text_order); order.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { OkHttpUtil.doGet("https://www.zhaoapi.cn/product/createOrder?uid=2834&price=" + price, new Callback() { @Override public void onFailure(Call call, IOException e) { } @Override public void onResponse(Call call, Response response) throws IOException { final String string = response.body().string(); runOnUiThread(new Runnable() { @Override public void run() { Toast.makeText(Main2Activity.this, string,Toast.LENGTH_SHORT).show(); } }); } }); } });}
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