Android listview--checkbox乱序

1. Code1） adapter classimport java.util.ArrayList;    import java.util.HashMap;    import java.util.List;    import java.util.Map;        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.ImageView;    import android.widget.TextView;        public class CheckBoxAdapter extends BaseAdapter {        private LayoutInflater mInflater;        private List<Map<String, Object>> mData;        public static Map<Integer, Boolean> isSelected;            public MyAdapter(Context context) {            mInflater = LayoutInflater.from(context);            init();        }            //初始化        private void init() {            mData=new ArrayList<Map<String, Object>>();            for (int i = 0; i < 5; i++) {                Map<String, Object> map = new HashMap<String, Object>();                map.put("img", R.drawable.icon);                map.put("title", "第" + (i + 1) + "行的标题");                mData.add(map);            }            //这儿定义isSelected这个map是记录每个listitem的状态，初始状态全部为false。            isSelected = new HashMap<Integer, Boolean>();            for (int i = 0; i < mData.size(); i++) {                isSelected.put(i, false);            }        }            @Override        public int getCount() {            return mData.size();        }            @Override        public Object getItem(int position) {            return null;        }            @Override        public long getItemId(int position) {            return 0;        }            @Override        public View getView(int position, View convertView, ViewGroup parent) {            ViewHolder holder = null;            //convertView为null的时候初始化convertView。            if (convertView == null) {                holder = new ViewHolder();                convertView = mInflater.inflate(R.layout.vlist, null);                holder.img = (ImageView) convertView.findViewById(R.id.img);                holder.title = (TextView) convertView.findViewById(R.id.title);                holder.cBox = (CheckBox) convertView.findViewById(R.id.cb);                convertView.setTag(holder);            } else {                holder = (ViewHolder) convertView.getTag();            }            holder.img.setBackgroundResource((Integer) mData.get(position).get(                    "img"));            holder.title.setText(mData.get(position).get("title").toString());            holder.cBox.setChecked(isSelected.get(position));            return convertView;        }            public final class ViewHolder {            public ImageView img;            public TextView title;            public CheckBox cBox;        }    }   2) xml布局<?xml version="1.0" encoding="utf-8"?>    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"        android:orientation="horizontal"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        >        <ImageView            android:id="@+id/img"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center_vertical"/>        <TextView             android:id="@+id/title"            android:textSize="18dip"            android:layout_weight="1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"/>        <CheckBox            android:id="@+id/cb"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:focusable="false"            android:focusableInTouchMode="false"            android:clickable="false"                   android:checkMark="?android:attr/listChoiceIndicatorMultiple"/>    </LinearLayout> 由于checkbox的点击事件优先级比listview的高，所以要在checkbox中添加android:focusable="false"，使得checkbox初始的时候没有获取焦点。2. Call1) set value    list=(ListView)findViewById(R.id.lv);                MyAdapter adapter=new MyAdapter(this);                list.setAdapter(adapter);                list.setItemsCanFocus(false);                list.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);                        list.setOnItemClickListener(new OnItemClickListener(){                    @Override                    public void onItemClick(AdapterView<?> parent, View view,                            int position, long id) {                        ViewHolder vHollder = (ViewHolder) view.getTag();        //在每次获取点击的item时将对于的checkbox状态改变，同时修改map的值。                        vHollder.cBox.toggle();                        MyAdapter.isSelected.put(position, vHollder.cBox.isChecked());                    }                });2) get valueOnClickListener bPop = new OnClickListener() {            @Override            public void onClick(View v) {                for(int i=0;i<list.getCount();i++){                    if(MyAdapter.isSelected.get(i)){                        ViewHolder vHollder = (ViewHolder) list.getChildAt(i).getTag();    Log.i(TAG, "--onClick --"+vHollder.title.getText());                    }                }            }        };