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  • Android 带checkbox的listView 实现多选,全选,反选,删除

    activity_main.xml

    复制代码
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >
      <LinearLayout 
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          >
        <Button 
            android:id="@+id/button1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="全选"
            android:layout_weight="1"
            />
        <Button 
            android:id="@+id/button2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="反 选"
             android:layout_weight="1"
            />
        <Button 
            android:id="@+id/button3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="全不选"
             android:layout_weight="1"
            />
        <Button 
            android:id="@+id/button4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="删除"
             android:layout_weight="1"
            />
    </LinearLayout>
    <TextView 
        android:id="@+id/price"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
    <ListView 
        android:id="@+id/listveiw"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        
        ></ListView>
      
      
      
      
    </LinearLayout>
    复制代码

    listveiw.xml

    如果ListView的Item中包含CheckBox,由于CheckBox的焦 点优先级高于ListView,所以当选中ListView时,ListView将不会有选中的状态,解决的方法就是在checkbox组件中加一属 性:android:focusable="false"

    复制代码
    <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >
       <TextView 
           android:id="@+id/text"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="ddd"
           
           />
    
       <CheckBox
           android:id="@+id/checkbox"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
          
            android:focusable="false"  
            android:clickable="false"

    android:layout_alignParentRight="true" android:layout_alignParentTop="true" /> </RelativeLayout>
    复制代码

    MainActivity.java

    复制代码
    package com.bawei.day04_listview;
    
    import java.util.ArrayList;
    import java.util.Iterator;
    import java.util.List;
    
    import com.bawei.day04_listview.Adper.ViewHolder;
    import com.bawei.vo.Good;
    
    import android.os.Bundle;
    import android.app.Activity;
    import android.view.Menu;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.widget.AdapterView;
    import android.widget.AdapterView.OnItemClickListener;
    import android.widget.BaseAdapter;
    import android.widget.Button;
    import android.widget.ListView;
    import android.widget.TextView;
    
    public class MainActivity extends Activity {
    
        private Button button1;
        private Button button2;
        private Button button3;
        private ListView listView;
        private List<Good> list;
        private TextView price;
        private int num = 0;
        private int pric = 0;
        private BaseAdapter adapter;
        private Button button4;
        private List<Good> li;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            button1 = (Button) findViewById(R.id.button1);// 全选
            button2 = (Button) findViewById(R.id.button2);// 反选
            button3 = (Button) findViewById(R.id.button3);// 全不选
            button4 = (Button) findViewById(R.id.button4);// 删除
            listView = (ListView) findViewById(R.id.listveiw);// 价格
    
            price = (TextView) findViewById(R.id.price);
            list = new ArrayList<Good>();
            // 赋值
            for (int i = 0; i < 60; i++) {
                list.add(new Good(i + "", false));
            }
            // 适配
            adapter = new Adper(list, MainActivity.this);
            listView.setAdapter(adapter);
            // 全选
            button1.setOnClickListener(new OnClickListener() {
    
                public void onClick(View v) {
                    // TODO Auto-generated method stub
    
                    num = 0;
                    pric = 0;
    
                    for (int i = 0; i < list.size(); i++) {
                        // 改变boolean
                        list.get(i).setBo(true);
                        // 如果为选中
                        if (list.get(i).getBo()) {
    
                            num++;
                            pric += Integer.parseInt(list.get(i).getName());
    
                        }
                    }
                    // 刷新
                    adapter.notifyDataSetChanged();
                    // 显示
                    price.setText("一共选了" + num + "件," + "价格是" + pric + "");
    
                }
            });
            // 反选
            button2.setOnClickListener(new OnClickListener() {
    
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    num = 0;
                    pric = 0;
                    for (int i = 0; i < list.size(); i++) {
                        // 改值
                        if (list.get(i).getBo()) {
                            list.get(i).setBo(false);
                        } else {
                            list.get(i).setBo(true);
                        }
                        // 刷新
                        adapter.notifyDataSetChanged();
                        // 如果为选中
                        if (list.get(i).getBo()) {
    
                            num++;
                            pric += Integer.parseInt(list.get(i).getName());
    
                        }
                    }
                    // 用TextView显示
                    price.setText("一共选了" + num + "件," + "价格是" + pric + "");
                }
            });
            // 全不选
            button3.setOnClickListener(new OnClickListener() {
    
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    num = 0;
                    pric = 0;
                    for (int i = 0; i < list.size(); i++) {
                        // 改值
                        list.get(i).setBo(false);
                        // 刷新
                        adapter.notifyDataSetChanged();
                        // 如果为选中
                        if (list.get(i).getBo()) {
                            num++;
                            pric += Integer.parseInt(list.get(i).getName());
                        }
    
                    }
                    price.setText("一共选了" + num + "件," + "价格是" + pric + "元");
                }
            });
            // 删除1
            /*
             * li = new ArrayList<Good>(); button4.setOnClickListener(new
             * OnClickListener() {
             * 
             * public void onClick(View v) { // TODO Auto-generated method stub for
             * (int i = 0; i < list.size(); i++) { if(list.get(i).getBo()){
             * //把要删除的保存起来 li.add(list.get(i));
             * 
             * }
             * 
             * } //删除 list.removeAll(li); adapter.notifyDataSetChanged(); num = 0;
             * pric = 0; price.setText("一共选了"+num+"件,"+"价格是"+pric+"元"); } });
             */
            // 删除2
            /*button4.setOnClickListener(new OnClickListener() {
    
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    for (int i = 0; i < list.size(); i++) {
                        if (list.get(i).getBo()) {
                            list.remove(i);
                           i--;
                        }
    
                    }
               
                    adapter.notifyDataSetChanged();
                    num = 0;
                    pric = 0;
                    price.setText("一共选了" + num + "件," + "价格是" + pric + "元");
                }
            });*/
            // 删除3
            button4.setOnClickListener(new OnClickListener() {
    
                public void onClick(View v) {
                    // TODO Auto-generated method stub
                    // 获取list集合对应的迭代器
                    Iterator it = list.iterator();
                    while (it.hasNext()) {
                        // 得到对应集合元素
                        Good g = (Good) it.next();
                        // 判断
                        if (g.getBo()) {
                            // 从集合中删除上一次next方法返回的元素
                            it.remove();
                        }
                    }
                    // 刷新
                    adapter.notifyDataSetChanged();
                    num = 0;
                    pric = 0;
                    // 显示
                    price.setText("一共选了" + num + "件," + "价格是" + pric + "元");
                }
            });
            // 绑定listView的监听器
            listView.setOnItemClickListener(new OnItemClickListener() {
    
                public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                        long arg3) {
                    // TODO Auto-generated method stub
                    // 取得ViewHolder对象
                    ViewHolder viewHolder = (ViewHolder) arg1.getTag();
                    // 改变CheckBox的状态
                    viewHolder.checkBox.toggle();
                    // 将CheckBox的选中状况记录下来
                    list.get(arg2).setBo(viewHolder.checkBox.isChecked());
                    // 调整选定条目
                    if (viewHolder.checkBox.isChecked() == true) {
                        num++;
                        pric += Integer.parseInt(list.get(arg2).getName());
                    } else {
                        num--;
                        pric -= Integer.parseInt(list.get(arg2).getName());
                    }
                    // 用TextView显示
                    price.setText("一共选了" + num + "件," + "价格是" + pric + "元");
                }
            });
    
        }
    
    }
    复制代码

    List的Vo类Good.java

    复制代码
    package com.bawei.vo;
    
    public class Good {
    private String name;
    private boolean bo;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public boolean getBo() {
        return bo;
    }
    public void setBo(boolean bo) {
        this.bo = bo;
    }
    @Override
    public String toString() {
        return "Good [name=" + name + ", bo=" + bo + "]";
    }
    public Good(String name, boolean bo) {
        super();
        this.name = name;
        this.bo = bo;
    }
    public Good() {
        super();
    }
    
    }
    复制代码

    适配Adper.java

    复制代码
    package com.bawei.day04_listview;
    
    import java.util.List;
    
    import com.bawei.vo.Good;
    
    import android.content.Context;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.view.ViewGroup;
    import android.widget.BaseAdapter;
    import android.widget.Button;
    import android.widget.CheckBox;
    import android.widget.CompoundButton;
    import android.widget.CompoundButton.OnCheckedChangeListener;
    import android.widget.TextView;
    
    public class Adper extends BaseAdapter {
        List<Good> list;
        Context context;
        
        public Adper(List<Good> list, Context context) {
            // TODO Auto-generated constructor stub
        this.list=list;
        this.context=context;
        
        
        }
    
        public int getCount() {
            // TODO Auto-generated method stub
            return list.size();
        }
    
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return null;
        }
    
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return 0;
        }
    
        public View getView(final int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub
            final ViewHolder viewHolder;
            if(convertView==null){
                convertView=View.inflate(context, R.layout.listveiw, null);
             viewHolder=new ViewHolder();
             viewHolder.textView=(TextView) convertView.findViewById(R.id.text);
            viewHolder.checkBox=(CheckBox) convertView.findViewById(R.id.checkbox); 
            convertView.setTag(viewHolder);
            }else{
                viewHolder=(ViewHolder) convertView.getTag();
            }
            viewHolder.textView.setText("价格:"+list.get(position).getName());
            
            //显示checkBox
            viewHolder.checkBox.setChecked(list.get(position).getBo());
            
            return convertView;
            
        }
    class ViewHolder{
        TextView textView;
        CheckBox checkBox;
    }
    }
    复制代码

     

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  • 原文地址:https://www.cnblogs.com/wbp0818/p/5388460.html
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