CheckBox与ListView的结合使用

实现效果: 长按LitsView的item时, CheckBox显示,CheckBox可选中,在这个效果当中可能会有CheckBox被选中时出现混乱的情况,在此记录一下这个解决办法.

1. 先做准备工作: 一个listview 的item行布局

   <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
         android:orientation="vertical"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
   <TextView
   android:layout_margin="10dp"
   android:id="@+id/tv_item_list_name"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"/>
   <TextView
   android:layout_margin="10dp"
   android:layout_toRightOf="@id/tv_item_list_name"
   android:id="@+id/tv_item_list_age"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"/>
   <CheckBox
   android:layout_alignParentRight="true"
   android:layout_margin="10dp"
   android:visibility="gone"
   android:id="@+id/ckb_item_list"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"/>
   </RelativeLayout>
   

2. listview的adapter

                                                                                                                                           package com.limiao.checkbox;     
   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.CompoundButton;
   import android.widget.TextView;
   
   import java.util.List;
   import java.util.zip.Inflater;
   
   /**
    * Created by limiao on 16/11/24.
    */
   
   public class MyAdapter extends BaseAdapter {
   private List<Person> mPersons;
   private Context mContext;
   private boolean mVisibility = false;// checkbox是否显示,默认不显示
   public MyAdapter(Context context) {
   mContext = context;
   notifyDataSetChanged();
   }
   
   public void setVisibility(boolean visibility) {
   mVisibility = visibility;
   notifyDataSetChanged();
   }
   
   public void setPersons(List<Person> persons) {
   mPersons = persons;
   notifyDataSetChanged();
   }
   
   @Override
   public int getCount() {
   return mPersons == null ? 0 : mPersons.size();
   }
   
   @Override
   public Object getItem(int position) {
   return mPersons.get(position);
   }
   
   @Override
   public long getItemId(int position) {
   return position;
   }
   
   @Override
   public View getView(int position, View convertView, ViewGroup parent) {
   ViewHolder holder = null;
   if (convertView == null) {
       convertView = LayoutInflater.from(mContext).inflate(R.layout.item_list, parent, false);
       holder = new ViewHolder(convertView);
       convertView.setTag(holder);
   } else {
       holder = (ViewHolder) convertView.getTag();
   }
   Person person = mPersons.get(position);
   holder.mNameTv.setText(person.getName());
   holder.mAgeTv.setText(person.getAge());
   if (mVisibility) {
       holder.mCheckBox.setVisibility(View.VISIBLE);
       final ViewHolder finalHolder = holder;
   
       /**
        * 此处要用setOnClickListener,而不是setOnCheckedChangeListener()
        * 否则会出现混乱的情况
        */
   
       holder.mCheckBox.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View v) {
               CheckBox checkBox = (CheckBox) v;
               finalHolder.mCheckBox.setChecked(checkBox.isChecked());
           }
       });
   }
   return convertView;
   }
   
   private static class ViewHolder {
   private TextView mNameTv;
   private TextView mAgeTv;
   private CheckBox mCheckBox;
   
   public ViewHolder(View view) {
       mNameTv = (TextView) view.findViewById(R.id.tv_item_list_name);
       mAgeTv = (TextView) view.findViewById(R.id.tv_item_list_age);
       mCheckBox = (CheckBox) view.findViewById(R.id.ckb_item_list);
   }
   

   }

在为CheckBox设置选中状态时,这里需要用setOnClickListener(),才不会出现混乱,如果用setOnCheckedChangeListener()就会出现以下的情况

CheckBox的选中状态出现混乱

3. 一个很简单的实体类

    package com.limiao.checkbox;
    /**
     * Created by limiao on 16/11/23.
     */

    public class Person  {
    String  name ;
    String age;

    public Person(String name, String age) {
    this.name = name;
    this.age = age;
    }

    public String getName() {
    return name;
    }

    public void setName(String name) {
    this.name = name;
    }

    public String getAge() {
    return age;
    }

    public void setAge(String age) {
    this.age = age;
    }
    }

4. 最后是MainActivity

   package com.limiao.checkbox;
   
   import android.support.v7.app.AppCompatActivity;
   import android.os.Bundle;
   import android.view.View;
   import android.widget.AdapterView;
   import android.widget.ListView;
   
   import java.util.ArrayList;
   import java.util.List;
   
   public class MainActivity extends AppCompatActivity {
   private ListView mListView;
   private MyAdapter mMyAdapter;
   private List<Person> mPersons;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);
   mListView = (ListView) findViewById(R.id.lv_aty_main);
   mPersons = new ArrayList<>();
   for (int i = 0; i < 90; i++) {
       Person person = new Person("aaa","34");
       mPersons.add(person);
   }
   mMyAdapter = new MyAdapter(this);
   mMyAdapter.setPersons(mPersons);
   mListView.setAdapter(mMyAdapter);
   mListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
       @Override
       public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
           mMyAdapter.setVisibility(true);
           return false;
       }
   });
   }
   }
   

demo的完整的下载地址