listview和checkbox结合代码,Java代码库,德仔网

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【Java】 listview和checkbox结合
作者: / 发布于2014/1/6/ 324
通过重写listview的adapter，将listview和checkbox结合在一起，并且二者可以分别操作。
activity_menu.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:orientation="vertical"
>
  <ListView
    android:id="@+id/android:list"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="2.0"
    android:scrollbars="vertical" />

  <TextView
    android:id="@+id/foodname"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1.0"
    android:textSize="20dp"
    android:text="" />
   <TextView
    android:id="@+id/price"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_weight="1.0"
    android:textSize="20dp"
    android:text="" />
  <LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">

    <Button
      android:id="@+id/call"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:background="@drawable/thphone1"
      android:layout_weight="1.0"
    android:textSize="20dp"
      android:text="电话订餐" />

    <Button
    android:id="@+id/cancelButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_weight="1.0"
    android:textSize="20dp"
    android:text="取消" />
   
  </LinearLayout>
  



</LinearLayout>



listview_style.xml~1KB

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/RelativeLayout01"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:paddingBottom="4dip"
  android:paddingLeft="12dip"
  android:paddingRight="12dip" >
<CheckBox
    android:id="@+id/CheckBox01"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentRight="true"
    android:focusable="false"
    android:clickable="false"
    android:focusableInTouchMode="false"
    android:gravity="center_vertical"
    android:paddingTop="12dip"
    >
  </CheckBox>

  <TextView
    android:id="@+id/topTextView"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="TextView1"
    android:textSize="20dip" />

  <TextView
    android:id="@+id/bottomTextView"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:layout_below="@+id/topTextView"
    android:text="TextView2" >
  </TextView>

</RelativeLayout>





MenuActivity.java~6KB



package com.amaker.wlo;

import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;
import org.w3c.dom.NodeList;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.ListView;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.amaker.util.HttpUtil;

public class MenuActivity extends Activity {

 private ListView listview;
 private TextView totalPrice;
 private TextView totalFood;
 private Button callBtn;
 private Button cancleBtn;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_menu);
  
  listview=(ListView)findViewById(android.R.id.list);
  
   totalPrice=(TextView)findViewById(R.id.price);
  
   totalFood=(TextView)findViewById(R.id.foodname);
  
   callBtn=(Button)findViewById(R.id.call);
   callBtn.setOnClickListener(callListener);
  
   cancleBtn=(Button)findViewById(R.id.cancelButton);
   cancleBtn.setOnClickListener(canclelistener);
  
   Context context=null;
     try {
     context= createPackageContext("com.amaker.wlo", Context.CONTEXT_IGNORE_SECURITY);
   } catch (NameNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
     SharedPreferences preferences = context.getSharedPreferences("shop_id", MODE_WORLD_WRITEABLE);
     int shopid=preferences.getInt("shopid", 0);
     
    
  
  String urlStr = HttpUtil.BASE_URL + "servlet/FoodServlet?shopId="+shopid;
  try {
   // 实例化URL
   URL url = new URL(urlStr);
   // URLConnection 实例
   URLConnection conn = url.openConnection();
   // 获得输入流
   InputStream in = conn.getInputStream();
   // 获得DocumentBuilderFactory对象
   DocumentBuilderFactory factory = DocumentBuilderFactory
     .newInstance();
   // 获得DocumentBuilder对象
   DocumentBuilder builder = factory.newDocumentBuilder();
   // 获得Document对象
   Document doc = builder.parse(in);
   // 获得节点列表
   NodeList nl = doc.getElementsByTagName("food");
   // Spinner数据
   ArrayList<HashMap<String, Object>> listitem = new ArrayList<HashMap<String, Object>>();
   // 获得XML数据
   for (int i = 0; i < nl.getLength(); i++) {
    // 商家編號
    // 商家名字foodPrice
    String foodName = doc.getElementsByTagName("foodName")
      .item(i).getFirstChild().getNodeValue();
    String foodPrice = doc.getElementsByTagName("foodPrice")
      .item(i).getFirstChild().getNodeValue();
    HashMap<String, Object> map = new HashMap<String, Object>();
    map.put("foodName", foodName);
    map.put("foodPrice", foodPrice+"元");
    listitem.add(map);
   }
   MenuListAdapter listAdapter = new MenuListAdapter(this,listitem, R.layout.listview_style,
          new String[] { "foodName", "foodPrice" },
     new int[] { R.id.topTextView, R.id.bottomTextView }
   );
   
   listview.setAdapter(listAdapter);
   listview.setOnItemClickListener(getMenu);
  }catch (Exception e) {
   e.printStackTrace();
  }
  
  

 }
 
 OnItemClickListener getMenu=new OnItemClickListener() {
  
  int sumprice=0; //定义一个存储所有价格的变量
  String sumfood=""; //定义一个存储所有食物的变量
  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position,
    long id) {
   
     RelativeLayout lr = (RelativeLayout) view;
    
    
   
    
    
    
     TextView tvtop = (TextView) lr.getChildAt(1);
     
     String foodName=tvtop.getText().toString()+" ";
     
     
     
     
     TextView tv = (TextView) lr.getChildAt(2);
    
     String s = tv.getText().toString();
    
     int foodprice=Integer.parseInt(s.substring(0, s.indexOf("元")));
    
    
    
    
    // 取得ViewHolder对象，这样就省去了通过层层的findViewById去实例化我们需要的cb实例的步骤
       ViewHolder holder = (ViewHolder) view.getTag();
       // 改变CheckBox的状态
       holder.cb.toggle();
       // 将CheckBox的选中状况记录下来
       MenuListAdapter.getIsSelected().put(position, holder.cb.isChecked());
       // 调整选定条目
       if (holder.cb.isChecked() == true) {
        sumprice=sumprice+foodprice;
        sumfood=sumfood+foodName;
       } else {
         sumprice=sumprice-foodprice;
         sumfood=sumfood.replace(foodName, "");
         
       }
       // 用TextView显示
       totalPrice.setText("你預計消費： "+sumprice);
     
     
       totalFood.setText("你已經點了： "+sumfood);
    
    
   
  }
 };
  

    
    OnClickListener callListener=new OnClickListener() {
  
  @Override
  public void onClick(View v) {
   Context context=null;
     try {
     context= createPackageContext("com.amaker.wlo", Context.CONTEXT_IGNORE_SECURITY);
   } catch (NameNotFoundException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
     SharedPreferences pref = context.getSharedPreferences("phoneinfo", MODE_WORLD_WRITEABLE);
     String PhoneNum=pref.getString("PhoneNum", "");
   Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+PhoneNum)); 
      startActivity(intent); 
   
  }
 };
    
 OnClickListener canclelistener=new OnClickListener() {
  
  @Override
  public void onClick(View v) {
   Intent intent=new Intent(MenuActivity.this,MainMenuActivity.class);
   startActivity(intent);
   
  }
 };
     
  


}





MenuListAdapter.java~2KB

package com.amaker.wlo;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.SimpleAdapter;
import android.widget.TextView;

public class MenuListAdapter extends SimpleAdapter {
 // 用来控制CheckBox的选中状况
 private static HashMap<Integer, Boolean> isSelected;
 // 用来导入布局
 private LayoutInflater inflater = null;
 private List<? extends Map<String, ?>> Mdata;


 public MenuListAdapter(Context context,
   List<? extends Map<String, ?>> data, int resource, String[] from,
   int[] to) {
  super(context, data, resource, from, to);
  this.Mdata=data;
  isSelected=new HashMap<Integer, Boolean>();
  inflater = LayoutInflater.from(context);
  initDate();
 }

 
 private void initDate(){
    for(int i=0; i<Mdata.size();i++) {
      getIsSelected().put(i,false);
    }
  }


 @Override
 public View getView(int position, View convertView, ViewGroup parent) {
  ViewHolder holder = null;
  if (convertView == null) {
   // 获得ViewHolder对象
   holder = new ViewHolder();
   // 导入布局并赋值给convertview
   convertView = inflater.inflate(R.layout.listview_style, null);
   holder.tv1 = (TextView) convertView.findViewById(R.id.topTextView);
   holder.tv2 = (TextView) convertView.findViewById(R.id.bottomTextView);
   holder.cb = (CheckBox) convertView.findViewById(R.id.CheckBox01);
   // 为view设置标签
   convertView.setTag(holder);
  } else {
   // 取出holder
   holder = (ViewHolder) convertView.getTag();
  }

  // 设置list中TextView的显示
  //holder.tv1.setText();
  holder.tv1.setText(((Map)getItem(position)).get("foodName").toString());
  holder.tv2.setText(((Map)getItem(position)).get("foodPrice").toString());
  // 根据isSelected来设置checkbox的选中状况
  holder.cb.setChecked(getIsSelected().get(position));
  return convertView;
 }






 public static HashMap<Integer, Boolean> getIsSelected() {
  return isSelected;
 }

 public static void setIsSelected(HashMap<Integer, Boolean> isSelected) {
  MenuListAdapter.isSelected = isSelected;
 }

}

class ViewHolder {
 TextView tv1;
 TextView tv2;
 CheckBox cb;
}
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