listView优化

@Override

public View getView(int position, View convertView, ViewGroup parent) {

ViewHolder holder;

if(convertView==null){

convertView = View.inflate(context, R.layout.item_lv_toutiao, null);

holder = new ViewHolder();

holder.iv_toutiao_pic = (ImageView) convertView.findViewById(R.id.iv_toutiao_pic);

holder.tv_toutiao_title = (TextView) convertView.findViewById(R.id.tv_toutiao_title);

holder.tv_toutiao_intro = (TextView) convertView.findViewById(R.id.tv_toutiao_intro);

convertView.setTag(holder);

}else{

holder = (ViewHolder) convertView.getTag();

}

DisplayImageOptions options = ImageLoadUtils.initOptions();

ImageLoader.getInstance().displayImage(list.get(position).pic, holder.iv_toutiao_pic, options);

holder.iv_toutiao_pic.setScaleType(ImageView.ScaleType.FIT_XY);

holder.tv_toutiao_title.setText(list.get(position).title);

holder.tv_toutiao_intro.setText(list.get(position).intro);

return convertView;

}

class ViewHolder{

ImageView iv_toutiao_pic;

TextView tv_toutiao_title;

TextView tv_toutiao_intro;

}