listview之adapter的优化

private class CategoryAdapter extends BaseAdapter {// 资源信息private int[] logoResIds = new int[] { R.drawable.id_ssq, R.drawable.id_3d, R.drawable.id_qlc };private int[] titleResIds = new int[] { R.string.is_hall_ssq_title, R.string.is_hall_3d_title, R.string.is_hall_qlc_title };@Overridepublic int getCount() {return size;}@Overridepublic Object getItem(int position) {return position;}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(final int position, View convertView, ViewGroup parent) {ViewHolder holder = null;if (convertView == null) {holder = new ViewHolder();convertView = View.inflate(context, R.layout.il_hall_lottery_item, null);//R.layout.il_hall_lottery_item  list的资源文件holder.logo = (ImageView) convertView.findViewById(R.id.ii_hall_lottery_logo);holder.title = (TextView) convertView.findViewById(R.id.ii_hall_lottery_title);holder.summary = (TextView) convertView.findViewById(R.id.ii_hall_lottery_summary);holder.bet = (ImageView) convertView.findViewById(R.id.ii_hall_lottery_bet);convertView.setTag(holder);} else {holder = (ViewHolder) convertView.getTag();}holder.logo.setImageResource(logoResIds[position]);holder.title.setText(titleResIds[position]);holder.summary.setTag(position);//holder.bet.setOnClickListener(new OnClickListener() {////@Override//public void onClick(View v) {//if (position == 0) {//MiddleManager.getInstance().changeUI(PlaySSQ.class,ssqBundle);////}////}//});return convertView;}// 依据item的layoutclass ViewHolder {ImageView logo;TextView title;TextView summary;ImageView bet;}}