条目的全选-反选_Demo

主Activity代码

package com.example.allandreverse;import java.util.ArrayList;import java.util.LinkedList;import java.util.List;import android.os.Bundle;import android.app.Activity;import android.content.Context;import android.view.Menu;import android.view.View;import android.view.ViewGroup;import android.view.View.OnClickListener;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.CheckBox;import android.widget.ListView;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity {    private ListView list_view;    private CheckAdapter checkAdapter;    private CheckBox allBox;    private Button reverse;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //获取控件        list_view = (ListView)findViewById(R.id.list_view);        allBox = (CheckBox)findViewById(R.id.all);        reverse = (Button)findViewById(R.id.reverse);        //条目集合        List<String> list = new ArrayList<String>();        //添加（测试）数据        for (int i = 0; i < 15; i++) {            list.add("这是条目" + i);        }        //创建适配器、设置适配器        checkAdapter = new CheckAdapter(getApplicationContext(), list);        list_view.setAdapter(checkAdapter);        //设置全选        allBox.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                boolean flag = allBox.isChecked();                for (int i = 0; i < checkAdapter.getSelect().size(); i++) {                    checkAdapter.getSelect().set(i, flag);                }                checkAdapter.notifyDataSetChanged();            }        });        //反选        reverse.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                if (! checkAdapter.getSelect().contains(true)) {                    Toast.makeText(MainActivity.this, "qingxuanz", 0).show();                }else {                    for (int i = 0; i < checkAdapter.getSelect().size(); i++) {                        if (checkAdapter.getSelect().get(i)) {                            checkAdapter.getSelect().set(i, false);                        }else {                            checkAdapter.getSelect().set(i, true);                        }                    }                    if (checkAdapter.getSelect().contains(false)) {                        allBox.setChecked(false);                    }                    checkAdapter.notifyDataSetChanged();                }            }        });    }//创建的适配器    private class CheckAdapter extends BaseAdapter {        private List<String> list;        private Context context;        //创建一个集合 去记录选中与未选中的状态         LinkedList<Boolean> linkedList = new LinkedList<Boolean>();        public CheckAdapter(Context context, List<String> list) {            // TODO Auto-generated constructor stub            this.list = list;            this.context = context;            for (int i = 0; i < list.size(); i++) {                linkedList.add(false);            }        }        //对外提供一个方法 获取这个集合        private List<Boolean> getSelect() {            return linkedList;        }        @Override        public int getCount() {            // TODO Auto-generated method stub            return list.size();        }        @Override        public Object getItem(int position) {            // TODO Auto-generated method stub            return list.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) {            if (convertView == null) {                convertView = View.inflate(context, R.layout.item, null);            }            CheckBox ck = (CheckBox) convertView.findViewById(R.id.ck);            TextView tView = (TextView) convertView.findViewById(R.id.tv);            tView.setText(list.get(position));            ck.setChecked(linkedList.get(position));            //对checkBox点击进行监听            ck.setOnClickListener(new OnClickListener() {                @Override                public void onClick(View v) {                    //点中的时候改成相反的值                    linkedList.set(position, ! linkedList.get(position));                    //点击的同时还要去判断全选                    if (linkedList.contains(false)) {                        allBox.setChecked(false);                    }else {                        allBox.setChecked(true);                    }                    notifyDataSetChanged();                }            });            return convertView;        }    }}

主类XML布局：

<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" >    <ListView        android:id="@+id/list_view"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_above="@+id/linear" >    </ListView>    <LinearLayout        android:id="@+id/linear"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:orientation="horizontal" >        <CheckBox            android:id="@+id/all"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="全选" />        <Button            android:text="反选"            android:id="@+id/reverse"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />    </LinearLayout></RelativeLayout>

适配器的item布局：

<?xml version="1.0" encoding="utf-8"?><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/ck"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        />    <TextView         android:id="@+id/tv"        android:textSize="18sp"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        /></LinearLayout>