listview_item多条目加载

package com.example.adapter;

import java.util.List;

import com.example.bean.CircleImageView;
import com.example.bean.News;
import com.example.indicator.R;
import com.nostra13.universalimageloader.core.ImageLoader;

import android.content.Context;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class MyBaseAdapter extends BaseAdapter {

	private List<News> newsList;
	private Context context;

	public MyBaseAdapter(Context context, List<News> newsList) {
		this.context = context;
		this.newsList = newsList;

	}

	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return newsList.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public long getItemId(int position) {

		return 0;
	}

	@Override
	public int getItemViewType(int position) {
		News news = newsList.get(position);
		if (news.imgSmall != null && news.imgSmall.length() > 0) {
			return 1;
		} else {
			return 0;
		}
		
	}

	@Override
	public int getViewTypeCount() {

		return 4;
	}

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		int i = getItemViewType(position);
		ViewHolder0 vh0 = null;
		ViewHolder1 vh1 = null;
		if (convertView == null) {
			switch (i) {
			case 0:
				convertView = View.inflate(context, R.layout.item2, null);
				vh0 = new ViewHolder0();
				vh0.portrait = (CircleImageView) convertView
						.findViewById(R.id.portrait2);
				vh0.authorid = (TextView) convertView
						.findViewById(R.id.authorid2);
				vh0.body = (TextView) convertView.findViewById(R.id.body2);
				convertView.setTag(vh0);
				break;
			case 1:
				convertView = View.inflate(context, R.layout.item, null);
				vh1 = new ViewHolder1();
				vh1.portrait = (CircleImageView) convertView
						.findViewById(R.id.portrait);
				vh1.authorid = (TextView) convertView
						.findViewById(R.id.authorid);
				vh1.body = (TextView) convertView.findViewById(R.id.body);
				vh1.imgSmall = (ImageView) convertView
						.findViewById(R.id.imgSmall);
				convertView.setTag(vh1);
				break;
			default:
				break;
			}
		} else {
			switch (i) {
			case 0:
				vh0 = (ViewHolder0) convertView.getTag();
				break;
			case 1:
				vh1 = (ViewHolder1) convertView.getTag();
				break;
			default:
				break;
			}
		}

		ImageLoader imageLoader = ImageLoader.getInstance();
		News news = newsList.get(position);
		switch (i) {
		case 0:
			vh0.authorid.setText(news.authorid);
			vh0.body.setText(news.body);
			imageLoader.displayImage(news.portrait, vh0.portrait);
			break;
		case 1:
			vh1.authorid.setText(news.authorid);
			vh1.body.setText(news.body);
			imageLoader.displayImage(news.portrait, vh1.portrait);
			
			imageLoader.displayImage(news.imgSmall, vh1.imgSmall);
			break;
		default:
			break;
		}
		return convertView;
	}

	class ViewHolder0 {
		CircleImageView portrait;
		TextView authorid;
		TextView body;
	}

	class ViewHolder1 {
		CircleImageView portrait;
		TextView authorid;
		TextView body;
		ImageView imgSmall;
	}
}