Android checkbox的listView(多選,全選,反選)具體實現方法

布局文件：
[html] 
復制代碼 代碼如下:
<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="horizontal" > 

    <TextView 
        android:id="@+id/tv" 
        android:layout_width="fill_parent" 
        android:layout_height="wrap_content" 
        android:layout_gravity="center_vertical" /> 

    <LinearLayout 
        android:id="@+id/line" 
        android:layout_width="fill_parent" 
        android:layout_height="50dp" 
        android:layout_below="@+id/tv" 
        android:orientation="horizontal" > 

        <Button 
            android:id="@+id/bt_selectall" 
            android:layout_width="80dp" 
            android:layout_height="fill_parent" 
            android:text="全選" /> 

             <Button 
            android:id="@+id/bt_cancleselectall" 
            android:layout_width="80dp" 
            android:layout_height="fill_parent" 
            android:text="反選" /> 

         
        <Button 
            android:id="@+id/bt_deselectall" 
            android:layout_width="80dp" 
            android:layout_height="fill_parent" 
            android:text="取消選擇" /> 

    </LinearLayout> 

    <ListView 
        android:id="@+id/lv" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent" 
        android:layout_below="@+id/line" /> 

</RelativeLayout> 
 

 
listView 的item布局文件：

[html]
復制代碼 代碼如下:
<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="horizontal" > 

    <TextView 
        android:id="@+id/item_tv" 
        android:layout_width="0dp" 
        android:layout_height="wrap_content" 
        android:layout_gravity="center_vertical" 
        android:layout_weight="1" /> 

    <CheckBox 
        android:id="@+id/item_cb" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:clickable="false" 
        android:focusable="false" 
        android:focusableInTouchMode="false" 
        android:gravity="center_vertical" /> 

</LinearLayout> 
 

Activity:

[java]
復制代碼 代碼如下:
public class Ex_checkboxActivity extends Activity { 
    private ListView lv; 
    private MyAdapter mAdapter; 
    private ArrayList<String> list; 
    private Button bt_selectall; 
    private Button bt_cancel; 
    private Button bt_deselectall; 
    private int checkNum; // 記錄選中的條目數量 
    private TextView tv_show;// 用於顯示選中的條目數量 

    /** Called when the activity is first created. */ 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
        /* 實例化各個控件 */ 
        lv = (ListView) findViewById(R.id.lv); 
        bt_selectall = (Button) findViewById(R.id.bt_selectall); 
        bt_cancel = (Button) findViewById(R.id.bt_cancelselectall); 
        bt_deselectall = (Button) findViewById(R.id.bt_deselectall); 
        tv_show = (TextView) findViewById(R.id.tv); 
        list = new ArrayList<String>(); 
        // 為Adapter准備數據 
        initDate(); 
        // 實例化自定義的MyAdapter 
        mAdapter = new MyAdapter(list, this); 
        // 綁定Adapter 
        lv.setAdapter(mAdapter); 

        // 全選按鈕的回調接口 
        bt_selectall.setOnClickListener(new OnClickListener() { 
            @Override 
            public void onClick(View v) { 
                // 遍歷list的長度，將MyAdapter中的map值全部設為true 
                for (int i = 0; i < list.size(); i++) { 
                    MyAdapter.getIsSelected().put(i, true); 
                } 
                // 數量設為list的長度 
                checkNum = list.size(); 
                // 刷新listview和TextView的顯示 
                dataChanged(); 
            } 
        }); 

        // 反選按鈕的回調接口 
        bt_cancel.setOnClickListener(new OnClickListener() { 
            @Override 
            public void onClick(View v) { 
                // 遍歷list的長度，將已選的設為未選，未選的設為已選 
                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的顯示 
                dataChanged(); 
            } 
        }); 

        // 取消按鈕的回調接口 
        bt_deselectall.setOnClickListener(new OnClickListener() { 
            @Override 
            public void onClick(View v) { 
                // 遍歷list的長度，將已選的按鈕設為未選 
                for (int i = 0; i < list.size(); i++) { 
                    if (MyAdapter.getIsSelected().get(i)) { 
                        MyAdapter.getIsSelected().put(i, false); 
                        checkNum--;// 數量減1 
                    } 
                } 
                // 刷新listview和TextView的顯示 
                dataChanged(); 
            } 
        }); 

        // 綁定listView的監聽器 
        lv.setOnItemClickListener(new OnItemClickListener() { 
            @Override 
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, 
                    long arg3) { 
                // 取得ViewHolder對象，這樣就省去了通過層層的findViewById去實例化我們需要的cb實例的步驟 
                ViewHolder holder = (ViewHolder) arg1.getTag(); 
                // 改變CheckBox的狀態 
                holder.cb.toggle(); 
                // 將CheckBox的選中狀況記錄下來 
                MyAdapter.getIsSelected().put(arg2, holder.cb.isChecked()); 
                // 調整選定條目 
                if (holder.cb.isChecked() == true) { 
                    checkNum++; 
                } else { 
                    checkNum--; 
                } 
                // 用TextView顯示 
                tv_show.setText("已選中" + checkNum + "項"); 
            } 
        }); 
    } 

    // 初始化數據 
    private void initDate() { 
        for (int i = 0; i < 15; i++) { 
            list.add("data" + " " + i); 
        } 

    } 
    // 刷新listview和TextView的顯示 
    private void dataChanged() { 
        // 通知listView刷新 
        mAdapter.notifyDataSetChanged(); 
        // TextView顯示最新的選中數目 
        tv_show.setText("已選中" + checkNum + "項"); 
    }; 
} 


列表適配器：

[java] 
復制代碼 代碼如下:
package com.notice.listcheck; 

import java.util.ArrayList; 
import java.util.HashMap; 

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.TextView; 

public class MyAdapter extends BaseAdapter { 
    // 填充數據的list 
    private ArrayList<String> list; 
    // 用來控制CheckBox的選中狀況 
    private static HashMap<Integer, Boolean> isSelected; 
    // 上下文 
    private Context context; 
    // 用來導入布局 
    private LayoutInflater inflater = null; 

    // 構造器 
    public MyAdapter(ArrayList<String> list, Context context) { 
        this.context = context; 
        this.list = list; 
        inflater = LayoutInflater.from(context); 
        isSelected = new HashMap<Integer, Boolean>(); 
        // 初始化數據 
        initDate(); 
    } 

    // 初始化isSelected的數據 
    private void initDate() { 
        for (int i = 0; i < list.size(); i++) { 
            getIsSelected().put(i, false); 
        } 
    } 

    @Override 
    public int getCount() { 
        return list.size(); 
    } 

    @Override 
    public Object getItem(int position) { 
        return list.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) { 
            // 獲得ViewHolder對象 
            holder = new ViewHolder(); 
            // 導入布局並賦值給convertview 
            convertView = inflater.inflate(R.layout.listviewitem, null); 
            holder.tv = (TextView) convertView.findViewById(R.id.item_tv); 
            holder.cb = (CheckBox) convertView.findViewById(R.id.item_cb); 
            // 為view設置標簽 
            convertView.setTag(holder); 
        } else { 
            // 取出holder 
            holder = (ViewHolder) convertView.getTag(); 
        } 
        // 設置list中TextView的顯示 
        holder.tv.setText(list.get(position)); 
        // 根據isSelected來設置checkbox的選中狀況 
        holder.cb.setChecked(getIsSelected().get(position)); 
        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 tv; 
        CheckBox cb; 
    } 
}