InfomationGalleryAdapter.java

package com.hyrt.cei.adapter;

import java.util.HashMap;
import java.util.List;

import android.content.Context;
import android.graphics.drawable.Drawable;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;

import com.hyrt.cei.application.CeiApplication;
import com.hyrt.cei.ui.information.InformationActivity;
import com.hyrt.cei.util.AsyncImageLoader;
import com.hyrt.cei.util.AsyncImageLoader.ImageCallback;
import com.hyrt.cei.vo.ImageResourse;
import com.hyrt.cei.vo.InfoNew;
import com.hyrt.ceiphone.R;

public class InfomationGalleryAdapter extends BaseAdapter {
	private Context mContext;
	private List<InfoNew> data;
	public HashMap<Integer, Drawable> drawables = new HashMap<Integer, Drawable>();
	private AsyncImageLoader asyncImageLoader;
	private Gallery gallery;

	public InfomationGalleryAdapter(Context mContext, List<InfoNew> data,
			Gallery gallery) {
		this.mContext = mContext;
		this.data = data;
		this.gallery = gallery;
		asyncImageLoader = ((CeiApplication) mContext.getApplicationContext()).asyncImageLoader;
	}

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

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return data.get(position % 5);
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return position;
	}

	@Override
	public View getView(final int position, View convertView, ViewGroup parent) {
		if (convertView == null) {
			convertView = new ImageView(mContext);
		}
		convertView.setLayoutParams(new Gallery.LayoutParams(
				LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));
		if (data.size() != 0) {
			convertView.setTag(data.get(position % 5).getImagepath());
		}
		((ImageView) convertView).setScaleType(ImageView.ScaleType.FIT_XY);
		convertView
				.setBackgroundResource(R.drawable.courseware_big_default_icon);
		if (drawables.containsKey(Integer.valueOf(position % 5))
				&& drawables.get(Integer.valueOf(position % 5)) != null) {
			convertView.setBackgroundDrawable(drawables.get(Integer
					.valueOf(position % 5)));
		} else {
			ImageResourse imageResource = new ImageResourse();
			if (data.size() != 0) {
				imageResource.setIconUrl(data.get(position % 5).getImagepath());
				imageResource.setIconId(data.get(position % 5).getId());
				imageResource.setIconTime(data.get(position % 5).getTime());
			}
			asyncImageLoader.loadDrawable(imageResource, new ImageCallback() {

				@Override
				public void imageLoaded(Drawable imageDrawable, String imageUrl) {
					ImageView img = (ImageView) gallery.findViewWithTag(data
							.get(position % 5).getImagepath());
					if (img != null && imageDrawable != null) {
						img.setImageDrawable(imageDrawable);
						drawables.put(Integer.valueOf(position % 5),
								imageDrawable);
						Log.i("view", position + "aic");
					}
				}
			});
		}
		return convertView;
	}

}