android：ListView中的复选框(所选元素的奇怪行为)

我发现了 here和 here类似的问题,但问题略有不同.

在ListView中,我尝试放置一个适配器(从基本适配器扩展)内容复选框.

列表视图布局：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://scheR_322_11845@as.android.com/apk/res/android"
    style="@style/mainLayout"
 >

    <Button
        android:id="@+id/close_cat"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="buttonClick"
        android:text="@String/BACk" />

    <ListView
        android:id="@android:id/list"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" />

</LinearLayout>

列表元素的XML：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://scheR_322_11845@as.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal" >

    <TableLayout
        android:id="@+id/bloccheck"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginBottom="25px"
        android:layout_marginTop="25px"
        android:BACkground="@color/black" >

        <TableRow
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:baselineAligned="true"
            android:paddingLeft="4sp" >

            <LinearLayout
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_gravity="center_vertical"
                android:layout_weight="1"
                android:orientation="horizontal"
                android:paddingLeft="20sp" >

                <ImageView
                    android:id="@+id/iv_cat"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content" />

                <TextView
                    android:id="@+id/category"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="left"
                    android:layout_marginLeft="15dip"
                    android:text="tfgldkjhglf"
                    android:textSize="20sp" />
            </LinearLayout>

            <checkBox
                android:id="@+id/check_cat"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="right"
                android:layout_marginRight="10sp"
                android:onClick="MyHandler" />
        </TableRow>
    </TableLayout>

</LinearLayout>

我在我的视图中设置了适配器：

list = getListView();
list.setAdapter(new CatAdapter(this,listCat));

我的适配器：

public class CatAdapter extends BaseAdapter {

    private LayoutInflater  mInflater;
    private List<CatAdapterObject> mListAppInfo;
    private Context mContext;


    /**
     * Constructor
     * @param context
     * @param data
     * @param resource
     * @param from
     * @param to
     */
    public CatAdapter (Context context,List<CatAdapterObject> list){   
        mContext = context;
        mListAppInfo = list;
        mInflater = LayoutInflater.from(mContext);      
    }

    /**
     * number of elements
     */
    @Override
    public int getCount() {
        return mListAppInfo.size();
    }

    /**
     * get an item in the list
     */
    @Override
    public Object getItem (int position){
        return mListAppInfo.get(position).getId();
    }

    /**
     * get id of the SELEcted item
     */
    @Override
    public long getItemId(int position) {
        return mListAppInfo.get(position).getId();
    }

    /**
     * get the view
     */
    @Override
    public View getView (int position,View convertView,ViewGroup parent){

        LinearLayout layoutItem;

        if (convertView == null) {
            layoutItem = (LinearLayout) mInflater.inflate(R.layout.category,parent,falsE);
        } else {
            layoutItem = (LinearLayout) convertView;
        }

        // get the current category
        CatAdapterObject entry =  mListAppInfo.get(position);

        //view setTing
        TextView category = (TextView) layoutItem.findViewById(R.id.category);
        checkBox cb         = (checkBox) layoutItem.findViewById(R.id.check_cat);
        ImageView iv_cat    = (ImageView) layoutItem.findViewById(R.id.iv_cat);

        //elements setTing
        category.setText(entry.getName());

        //checkBox
        cb.setchecked(entry.ischecked());
        cb.setTag(position);

        //picture
        Bitmap icon = Utils.getResizedBitmap(BitmapFactory.decoderesource(mContext.getresources(),entry.getPict()),45,truE);     
        iv_cat.setImageBitmap(icon);

        return layoutItem;

    }
}

当活动被推出时,列表将完美显示.我可以毫无问题地向上/向下滚动.但是,当我选中其中一个复选框并向下滚动时,选中“松散”其复选标记的框和列表中最新框的背景颜色已更改.

选中框时,会调用以下方法(在我的活动文件中)：

public void MyHandler(View v) {

        //クリックされたcheckBox
        cb = (checkBox) v;

        Log.d("checKBox","before :"+Utils.implode(",",this.cat_id_list));

        //get position in the list
        Integer position = Integer.parseInt(cb.getTag().toString());

        //instance of the view (list's child)
        View o = list.getChildAt(position).findViewById(R.id.bloccheck);

        // check if Box is checked
        if (cb.ischecked()) { 
            o.setBACkgroundresource(R.color.pink);

            this.cat_id_list.add(position.toString());

        // 背景色を替え、リストから削除
        } else { 

            o.setBACkgroundresource(R.color.black);

            Collections.sort(this.cat_id_list);
            int index = Collections.binarySearch(this.cat_id_list,position.toString());
            this.cat_id_list.remove(indeX);

        }

        Log.d("checKBox","after :"+Utils.implode(",this.cat_id_list));
    }

我的列表中有8个元素,但是当我检查列表的“mChildrenCount”时,只有5个元素.

我只想保存已检查的元素的“this.cat_id_list”id并更改所选项目的背景颜色.

非常感谢你的帮助！

ListView lv = ((ListActivity)context).getListView();
// Containing all check states
SparseBooleanArray sba = lv.getcheckedItemPositions();

checkBox cb = (checkBox) convertView.findViewById(R.id.yourcheckBox);

cb.setchecked(false);

if(sba != null)
  if(sba.get(position))
     cb.setchecked(true);