Android: ListView与Button的共存问题解决

public class lvWithButtonExt extends ListActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        // 关联Layout中的ListView
        ListView vncListView = (ListView)findViewById(android.R.id.list);
        
        // 生成动态数组，加入数据 
        ArrayList<HashMap<String, Object>> remoteWindowItem = newArrayList<HashMap<String, Object>>();
        for(int i=0;i<10;i++)
        {
            HashMap<String, Object> map = new HashMap<String, Object>();
            map.put("ItemImage", R.drawable.firefox);//图像资源的ID 
            map.put("ItemWinName", "Window ID "+i);
            map.put("ItemCloseWin",android.R.drawable.ic_menu_close_clear_cancel);
            remoteWindowItem.add(map);
        }
        
      // 生成适配器的Item和动态数组对应的元素 
        lvButtonAdapter listItemAdapter = new lvButtonAdapter(
            this,
            remoteWindowItem,//数据源 
            R.layout.lvitem,//ListItem的XML实现

            //动态数组与ImageItem对应的子项 
            new String[] {"ItemImage","ItemWinName", "ItemCloseWin"},
            //ImageItem的XML文件里面的一个ImageView,两个TextView ID 
            new int[] {R.id.ItemImage,R.id.ItemWinName,R.id.ItemCloseWin}
        );
        
        vncListView.setAdapter(listItemAdapter);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id){
        // TODO Auto-generated method stub
        super.onListItemClick(l, v, position, id);
        l.getItemAtPosition(position);
    }
}

public class lvButtonAdapter extends BaseAdapter {
    private class buttonViewHolder {
        ImageView appIcon;
        TextView appName;
        ImageButton buttonClose;
    }
    
    private ArrayList<HashMap<String, Object>> mAppList;
    private LayoutInflater mInflater;
    private Context mContext;
    private String[] keyString;
    private int[] valueViewID;
    private buttonViewHolder holder;
    
    public lvButtonAdapter(Context c, ArrayList<HashMap<String, Object>> appList, int resource,
            String[] from, int[] to) {
        mAppList = appList;
        mContext = c;
        mInflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        keyString = new String[from.length];
        valueViewID = new int[to.length];
        System.arraycopy(from, 0, keyString, 0, from.length);
        System.arraycopy(to, 0, valueViewID, 0, to.length);
    }
    
    @Override
    public int getCount() {
        return mAppList.size();
    }

    @Override
    public Object getItem(int position) {
        return mAppList.get(position);
    }

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

    public void removeItem(int position){
        mAppList.remove(position);
        this.notifyDataSetChanged();
    }
    
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView != null) {
            holder = (buttonViewHolder) convertView.getTag();
        } else {
            convertView = mInflater.inflate(R.layout.lvitem, null);
            holder = new buttonViewHolder();
            holder.appIcon = (ImageView)convertView.findViewById(valueViewID[0]);
            holder.appName = (TextView)convertView.findViewById(valueViewID[1]);
            holder.buttonClose = (ImageButton)convertView.findViewById(valueViewID[2]);
            convertView.setTag(holder);
        }
        
        HashMap<String, Object> appInfo = mAppList.get(position);
        if (appInfo != null) {
            String aname = (String) appInfo.get(keyString[1]);
            int mid = (Integer)appInfo.get(keyString[0]);
            int bid = (Integer)appInfo.get(keyString[2]);
            holder.appName.setText(aname);
            holder.appIcon.setImageDrawable(holder.appIcon.getResources().getDrawable(mid));
            holder.buttonClose.setImageDrawable(holder.buttonClose.getResources().getDrawable(bid));
            holder.buttonClose.setOnClickListener(new lvButtonListener(position));
        }        
        return convertView;
    }

    class lvButtonListener implements OnClickListener {
        private int position;

        lvButtonListener(int pos) {
            position = pos;
        }
        
        @Override
        public void onClick(View v) {
            int vid=v.getId();
            if (vid == holder.buttonClose.getId())
                removeItem(position);
        }
    }
}