基于ListView的单选、全选、删除功能实现小Demo

说一下思路，借助一个抽象的checkboxbean模型，来对应每一个checkbox的选中状态:,然后根据checkboxbean的属性来进行相应的操作

1,首先来看效果图：

2，再看布局文件:
主布局：

<?xml version="1.0" encoding="utf-8"?>
<!--activity_main 布局文件-->
<RelativeLayout
    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"
    tools:context="com.wang.www.selectalldemo.MainActivity">

    <ListView
        android:id="@+id/listview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/linearlayout"></ListView>

    <RelativeLayout
        android:id="@+id/linearlayout"
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:orientation="horizontal">

        <CheckBox
            android:id="@+id/checkBox"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:checked="false"
            android:gravity="center"
            android:text="全选"/>

        <Button
            android:id="@+id/button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_alignParentEnd="true"
            android:layout_alignParentRight="true"
            android:text="删除"/>

        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="加载"
            android:id="@+id/button2"
            android:onClick="loadData"
            android:layout_centerVertical="true"
            android:layout_toLeftOf="@+id/button"
            android:layout_toStartOf="@+id/button"/>
    </RelativeLayout>
</RelativeLayout>

单项布局：

<?xml version="1.0" encoding="utf-8"?>
<!--单项布局，一个chenckbox,一个textview-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:orientation="horizontal">

    <CheckBox

        android:id="@+id/checkBox_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:checked="false"
        android:text="选中"/>

    <TextView
        android:id="@+id/textView_item"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="第几项"
        android:textAppearance="?android:attr/textAppearanceLarge"
        />

</LinearLayout>

3，代码
checkbox抽象模型：

/**
 * Created by wang on 2016/5/12.
 * checkbox抽象模型，用来保存每一个checkbox的选中状态
 */
public class CheckBoxBean {
    private boolean isChecked;

    public CheckBoxBean() {
    }

    public CheckBoxBean(boolean isChecked) {
        this.isChecked = isChecked;
    }

    public boolean isChecked() {
        return isChecked;
    }

    public void setChecked(boolean checked) {
        isChecked = checked;
    }
}

Activity:

package com.wang.www.selectalldemo;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    private static final String TAG = "selectalldemo";
    private CheckBox checkBox;
    private ListView listView;
    private Button button;
    MyAdapter adapter;
    private List<String> list = new ArrayList<>();
    private List<CheckBoxBean> boxList = new ArrayList<>();

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initList();
        initBoxBeanList();
        initView();
    }

    private void initBoxBeanList() {
        boxList.clear();
        for (int i = 0; i < list.size(); i++) {
            boxList.add(new CheckBoxBean(false));
        }
    }

    private void initList() {
        list.add("0");
        list.add("1");
        list.add("2");
        list.add("3");
        list.add("4");
        list.add("5");
        list.add("6");
        list.add("7");
        list.add("8");
        list.add("9");
        list.add("10");
        list.add("11");
        list.add("12");
        list.add("13");
        list.add("14");
        list.add("15");
        list.add("16");
        list.add("17");
        list.add("18");
        list.add("19");
        list.add("20");
    }

    private void initView() {
        button = (Button) findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                deleteCheckedItem();
            }
        });
        listView = (ListView) findViewById(R.id.listview);
        adapter = new MyAdapter(list,boxList,this);
        listView.setAdapter(adapter);
        checkBox = (CheckBox) findViewById(R.id.checkBox);
        checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                selectAll(isChecked);
                adapter.notifyDataSetChanged();
            }
        });

    }

    /**
     * 删除选中项
     */
    private void deleteCheckedItem() {
        int count = list.size() - 1 ;
        //从大都小遍历，否则，从小到大遍历的话会出现错位
        for (int i = count ; i >= 0 ; i--) {
            if (boxList.get(i).isChecked()){
                list.remove(i);
            }
        }

        //如果是全部删除,全选框设为未选中
        if (list.size()==0){
            checkBox.setChecked(false);
        }
        initBoxBeanList();
        adapter.notifyDataSetChanged();
    }

    /**
     * 单项中选中状态改变时，由adpater回调
     * @param position
     * @param isChecked
     */
    public void checkedStateChange(int position, boolean isChecked) {
        boxList.get(position).setChecked(isChecked);
        adapter.notifyDataSetChanged();
    }

    /**
     * 是否全选
     * @param isChecked
     * true:全选
     * false:全不选
     */
    private void selectAll(boolean isChecked) {
        for (int i = 0; i < boxList.size(); i++) {
            boxList.get(i).setChecked(isChecked);
        }
    }

    /**
     * 点击加载数据，重新初始化
     * @param v
     */
    public void loadData(View v){
        initList();
        initBoxBeanList();
        adapter.notifyDataSetChanged();
    }
}

Adapter:

package com.wang.www.selectalldemo;

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;

/**
 * Created by wang on 2016/5/11.
 */
public class MyAdapter extends BaseAdapter {
    private static final String TAG = "selectalldemo";
    private List<String> list;
    private List<CheckBoxBean> boxBeanList;
    private Context context;

    public MyAdapter(List<String> list, List<CheckBoxBean> boxBeanList, Context context) {
        this.list = list;
        this.boxBeanList = boxBeanList;
        this.context = context;
    }

    @Override
    public int getCount() {
        return list == null ? 0 : list.size();
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder holder;

        if (convertView == null) {
            convertView = LayoutInflater.from(context).inflate(R.layout.item, parent, false);
            holder = new ViewHolder(convertView);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.textView.setText(list.get(position));
        //设置监听
        holder.checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                MainActivity mainActivity = (MainActivity) context;
                mainActivity.checkedStateChange(position, isChecked);
            }
        });

        //根据集合中的 抽象模型的属性的设置checkbox的选中状态
        holder.checkBox.setChecked(boxBeanList.get(position).isChecked());

        return convertView;
    }

    class ViewHolder {
        CheckBox checkBox;
        TextView textView;

        public ViewHolder(View itemView) {
            checkBox = (CheckBox) itemView.findViewById(R.id.checkBox_item);
            textView = (TextView) itemView.findViewById(R.id.textView_item);
        }
    }
}

源码地址：https://github.com/1318526619/SelectAllDemo