android复选框删除、反选、全选以及取消

来源：互联网发布：数据分析前途编辑：程序博客网时间：2024/05/17 13:41

//主界面

package com.bwie.test;

import java.util.ArrayList;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONObject;
import com.bwie.test.adapter.MyAdapter;
import com.bwie.test.adapter.MyAdapter.ViewHolder;
import com.bwie.test.bean.Person;
import com.bwie.test.httpUrlConnection.HttpUrlGetConnectinGet;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.app.Activity;

public class MainActivity extends Activity {

   private ListView lv;
   private List<Person> list;
   private MyAdapter adapter;
   private ImageView allCheckBox;
   private int checkNum; // 记录选中的条目数量
   private TextView selected;
   private TextView fanxuan;
   private TextView cancle;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       // 初始化控件
       lv = (ListView) findViewById(R.id.lv);
       allCheckBox = (ImageView) findViewById(R.id.de_chu);
       selected = (TextView) findViewById(R.id.selectedCall);
       fanxuan = (TextView) findViewById(R.id.fanxuan);
       cancle = (TextView) findViewById(R.id.cancle);
       // 全选
       selected.setOnClickListener(new OnClickListener() {
           @Override
           public void onClick(View v) {
               // TODO Auto-generated method stub
               // 遍历list的长度，将MyAdapter中的map值全部设为true
               for (int i = 0; i < list.size(); i++) {
                   MyAdapter.getIsSelected().put(i, true);
               }
               // 数量设为list的长度
               checkNum = list.size();
               // 刷新listview和TextView的显示
               dataChanged();
           }
       });
       // 反选
       fanxuan.setOnClickListener(new OnClickListener() {

           @Override
           public void onClick(View v) {
               // TODO Auto-generated method stub
               // 遍历list的长度，将已选的设为未选，未选的设为已选
               for (int i = 0; i < list.size(); i++) {
                   if (MyAdapter.getIsSelected().get(i)) {
                       MyAdapter.getIsSelected().put(i, false);
                       checkNum--;
                   } else {
                       MyAdapter.getIsSelected().put(i, true);
                       checkNum++;
                   }
               }
               // 刷新listview和TextView的显示
               dataChanged();
           }
       });
       // 取消
       cancle.setOnClickListener(new OnClickListener() {

           @Override
           public void onClick(View v) {
               // TODO Auto-generated method stub
               // 遍历list的长度，将已选的按钮设为未选
               for (int i = 0; i < list.size(); i++) {
                   if (MyAdapter.getIsSelected().get(i)) {
                       MyAdapter.getIsSelected().put(i, false);
                       checkNum--;// 数量减1
                   }
               }
               // 刷新listview和TextView的显示
               dataChanged();
           }
       });
       //删除
       allCheckBox.setOnClickListener(new OnClickListener() {
           @Override
           public void onClick(View v) {
               // TODO Auto-generated method stub
               for (int i = 0; i < list.size(); i++) {
                   Person p = list.get(i);
                   if (p.isCheck()) {
                       list.remove(i);
                       i--;
                   }

               }
               // 刷新listview和TextView的显示
               dataChanged();
           }
       });
       // 开启线程
       new MyThread().start();

   }

   public class MyThread extends Thread {

       @Override
       public void run() {
           // TODO Auto-generated method stub
           super.run();
           list = new ArrayList<Person>();
           try {
               String str = HttpUrlGetConnectinGet.HGet();
               Log.e("======", str);
               JSONObject object = new JSONObject(str);
               JSONArray jsonarray = object.getJSONArray("data");
               for (int i = 0; i < jsonarray.length(); i++) {
                   JSONObject jsonObject = jsonarray.getJSONObject(i);
                   String channelName = jsonObject.getString("channelName");
                   Person p = new Person();
                   p.setChannelName(channelName);
                   list.add(p);
               }
               Message msg = new Message();
               msg.obj = list;
               Log.e("======++", list + "");
               msg.what = 1;
               myHandler.sendMessage(msg);
           } catch (Exception e) {
               // TODO: handle exception
               e.printStackTrace();
           }

       }
   }

   public Handler myHandler = new Handler() {
       public void handleMessage(android.os.Message msg) {
           switch (msg.what) {
           case 1:
               List<Person> mlist = (List<Person>) msg.obj;
               adapter = new MyAdapter(MainActivity.this, mlist);
               lv.setAdapter(adapter);
               lv.setOnItemClickListener(new OnItemClickListener() {
                   @Override
                   public void onItemClick(AdapterView<?> arg0, View arg1,
                           int arg2, long arg3) {
                       // TODO Auto-generated method stub
                       // 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 viewHolder = (ViewHolder) arg1.getTag();
                       // 改变CheckBox的状态
                       viewHolder.ck.toggle();
                       // 将CheckBox的选中状况记录下来
                       MyAdapter.getIsSelected().put(arg2,
                               viewHolder.ck.isChecked());
                       // 调整选定条目
                       if (viewHolder.ck.isChecked() == true) {
                           checkNum++;
                       } else {
                           checkNum--;
                       }
                   }
               });

               break;
           default:
               break;
           }

       };

   };

   private void dataChanged() {
       // 通知listView刷新
       adapter.notifyDataSetChanged();
   };

}

//adapter 界面

package com.bwie.test.adapter;
import java.util.HashMap;
import java.util.List;
import com.bwie.test.R;
import com.bwie.test.bean.Person;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.TextView;

public class MyAdapter extends BaseAdapter {

   private Context context;
   private List<Person> mlist;
   private static HashMap<Integer,Boolean> isSelected;

   public MyAdapter(Context context, List<Person> mlist) {
       // TODO Auto-generated constructor stub
       this.context = context;
       this.mlist = mlist;
       isSelected=new HashMap<Integer, Boolean>();
       initData();
   }

   private void initData() {
       // TODO Auto-generated method stub
       for (int i = 0; i < mlist.size(); i++) {
               getIsSelected().put(i,false);
               }

   }

   @Override
   public int getCount() {
       // TODO Auto-generated method stub
       return mlist.size();
   }

   @Override
   public Object getItem(int position) {
       // TODO Auto-generated method stub
       return mlist.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
       //viewHolder的优化
       ViewHolder viewHolder;
       if (convertView==null) {
           viewHolder=new ViewHolder();
           convertView=View.inflate(context,R.layout.list_item,null);
           viewHolder.tvname=(TextView) convertView
                   .findViewById(R.id.text_name);
           viewHolder.ck=(CheckBox) convertView.findViewById(R.id.checkBox1);
           convertView.setTag(viewHolder);
       } else {
           viewHolder=(ViewHolder)convertView.getTag();
       }
       viewHolder.tvname.setText(mlist.get(position).getChannelName());
       viewHolder.ck.setChecked(getIsSelected().get(position));
       viewHolder.ck.setOnCheckedChangeListener(new OnCheckedChangeListener() {

           @Override
           public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
               // TODO Auto-generated method stub
               if(isChecked){
                   mlist.get(position).setCheck(true);
               }else{
                   mlist.get(position).setCheck(false);
               }
           }
       });
       return convertView;
   }
   public static HashMap<Integer, Boolean> getIsSelected() {
        return isSelected;
    }

    public static void setIsSelected(HashMap<Integer, Boolean> isSelected) {
        MyAdapter.isSelected = isSelected;
    }
    public static class ViewHolder {
       TextView tvname;
       public CheckBox ck;
   }

}

//person界面

package com.bwie.test.bean;
public class Person {
   private String uid;
   private String channelName;
   private String channelKey;
   private String descr;
   private String createDate;
   private String channelLogo;
   private String channelVersion;
   private boolean isCheck;

   public Person(String uid, String channelName, String channelKey,
           String descr, String createDate, String channelLogo,
           String channelVersion, boolean isCheck) {
       super();
       this.uid = uid;
       this.channelName = channelName;
       this.channelKey = channelKey;
       this.descr = descr;
       this.createDate = createDate;
       this.channelLogo = channelLogo;
       this.channelVersion = channelVersion;
       this.isCheck = isCheck;
   }

   /**
   * @return the uid
   */
   public String getUid() {
       return uid;
   }

   /**
   * @param uid the uid to set
   */
   public void setUid(String uid) {
       this.uid = uid;
   }

   /**
   * @return the channelName
   */
   public String getChannelName() {
       return channelName;
   }

   /**
   * @param channelName the channelName to set
   */
   public void setChannelName(String channelName) {
       this.channelName = channelName;
   }

   /**
   * @return the channelKey
   */
   public String getChannelKey() {
       return channelKey;
   }

   /**
   * @param channelKey the channelKey to set
   */
   public void setChannelKey(String channelKey) {
       this.channelKey = channelKey;
   }

   /**
   * @return the descr
   */
   public String getDescr() {
       return descr;
   }

   /**
   * @param descr the descr to set
   */
   public void setDescr(String descr) {
       this.descr = descr;
   }

   /**
   * @return the createDate
   */
   public String getCreateDate() {
       return createDate;
   }

   /**
   * @param createDate the createDate to set
   */
   public void setCreateDate(String createDate) {
       this.createDate = createDate;
   }

   /**
   * @return the channelLogo
   */
   public String getChannelLogo() {
       return channelLogo;
   }

   /**
   * @param channelLogo the channelLogo to set
   */
   public void setChannelLogo(String channelLogo) {
       this.channelLogo = channelLogo;
   }

   /**
   * @return the channelVersion
   */
   public String getChannelVersion() {
       return channelVersion;
   }

   /**
   * @param channelVersion the channelVersion to set
   */
   public void setChannelVersion(String channelVersion) {
       this.channelVersion = channelVersion;
   }

   /**
   * @return the isCheck
   */
   public boolean isCheck() {
       return isCheck;
   }

   /**
   * @param isCheck the isCheck to set
   */
   public void setCheck(boolean isCheck) {
       this.isCheck = isCheck;
   }

   public Person(){}
}
//数据请求界面
package com.bwie.test.httpUrlConnection;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

public class HttpUrlGetConnectinGet {
public static String HGet(){
   String result="";
   String path="http://121.42.8.95:8090/AndroidServer/yk.json";
   try {
       HttpGet h=new HttpGet(path);
       HttpClient httpclient=new DefaultHttpClient();
       HttpResponse httpResponse = httpclient.execute(h);
       if(httpResponse.getStatusLine().getStatusCode()==200){
           HttpEntity httpEntity = httpResponse.getEntity();
            result=EntityUtils.toString(httpEntity,"utf-8");
       }
   } catch (Exception e) {
       // TODO: handle exception
       e.printStackTrace();
   }
    return result;
}
}

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