NewsListAdapter.java

package net.yasite.adapter;

import java.util.ArrayList;
import java.util.List;

import net.yasite.entity.NewsEntity;
import net.yasite.test.BaseApplication;
import net.yasite.test.R;
import android.content.Context;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;

public class NewsListAdapter extends BaseAdapter {
	List<NewsEntity> list;
	Context context;
	
	private ImageLoader mImageLoader;
	private DisplayImageOptions options;
	
	public List<NewsEntity> getList() {
		return list;
	}
	public void setList(List<NewsEntity> list) {
		this.list = list;
	}
	public NewsListAdapter(Context context,List<NewsEntity> list){
		this.context = context;
		this.list = list;
		mImageLoader = BaseApplication.initImageLoader(context);
		options = new DisplayImageOptions.Builder()
		.bitmapConfig(Bitmap.Config.RGB_565)
		.showStubImage(R.drawable.ic_launcher)
        .showImageForEmptyUri(R.drawable.ic_launcher)
        .showImageOnFail(R.drawable.ic_launcher)
		.cacheInMemory(true)
		.cacheOnDisc(true)
		.build();
	}
	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return list.size();
	}

	@Override
	public NewsEntity getItem(int position) {
		return list.get(position);
	}

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

	@Override
	public View getView(int position, View convertView, ViewGroup arg2) {
		ViewHolder mViewHolder;
		if(null == convertView){
			mViewHolder = new ViewHolder();
			convertView = LayoutInflater.from(context).inflate(R.layout.list_item, null);
			this.setupChildViews(convertView, mViewHolder);
			convertView.setTag(mViewHolder);
		} else{
			mViewHolder = (ViewHolder) convertView.getTag();
		}
			setChildViewData(mViewHolder, position, getItem(position));
		return convertView;
	}
	
	
	private void setChildViewData(ViewHolder mViewHolder, int position,
			NewsEntity item) {
		mViewHolder.nid.setText(item.getId());
		mViewHolder.title.setText(item.getTitle());
		mViewHolder.desc.setText(item.getDesc());
		if(item.getPic() != null && !item.getPic().equals("")){
			mImageLoader.displayImage("http://172.17.68.224:80/api/pic/" + item.getPic(),
					mViewHolder.pic, options);
		}else{
			mImageLoader.displayImage("drawable://" + R.drawable.ic_launcher, mViewHolder.pic);
		}
		
	}
	private void setupChildViews(View convertView, ViewHolder mViewHolder){
		mViewHolder.nid = (TextView)convertView.findViewById(R.id.nid);
		mViewHolder.title = (TextView)convertView.findViewById(R.id.title);
		mViewHolder.desc = (TextView)convertView.findViewById(R.id.desc);
		mViewHolder.pic = (ImageView)convertView.findViewById(R.id.pic);
	}
	
	static class ViewHolder{
		private TextView nid;
		private TextView title;
		private TextView desc;
		private ImageView pic;
	}

}