ImageFragmentAdapter.java

package com.mzeat.ui.adapter;

import java.util.List;

import com.mzeat.R;
import com.mzeat.image.ImageCache;
import com.mzeat.image.ImageCache.ImageCacheParams;
import com.mzeat.image.ImageFetcher;
import com.mzeat.image.ImageResizer;
import com.mzeat.image.ImageWorker.ImageWorkerAdapter;
import com.mzeat.ui.fragment.ImagePagerFragment;

import android.content.Context;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.util.Log;

/**
 * <p>
 * Description:
 * </p>
 * 
 * @version 1.0
 * @author hongjinqun
 * @date 2012-12-23
 */
public class ImageFragmentAdapter extends FragmentPagerAdapter {

	private List<String> imageUrls;
	private ImageResizer mImageWorker;
	private ImageCache mImageCache;
	private Context mContext;

	/**
	 * ImageFragmentAdapter构造方法
	 * 
	 * @param context
	 * @param fm
	 * @param imageUrls
	 */
	public ImageFragmentAdapter(Context context, FragmentManager fm,
			List<String> imageUrls) {
		super(fm);
		mContext = context;
		this.imageUrls = imageUrls;
		initImageLoader();
	}

	/**
	 * 设置ImageUrlList
	 * 
	 * @param imageUrls
	 */
	public void setImageUrlList(List<String> imageUrls) {
		if (this.imageUrls != null) {
			this.imageUrls.clear();
			this.imageUrls = imageUrls;

			notifyDataSetChanged();
		}
	}

	/**
	 * 初始化ImageLoader
	 */
	private void initImageLoader() {
		mImageWorker = new ImageFetcher(mContext, (int) mContext.getResources()
				.getDimension(R.dimen.poster_width), (int) mContext
				.getResources().getDimension(R.dimen.poster_height));
		mImageWorker.setAdapter(imageThumbWorkerUrlsAdapter);
		mImageWorker.setLoadingImage(R.drawable.empty_image);
		ImageCacheParams cacheParams = new ImageCacheParams(
				ImageCache.IMAGE_DIR);
		
		mImageCache = new ImageCache(mContext, cacheParams);
		mImageWorker.setImageCache(mImageCache);
	}

	@Override
	public Fragment getItem(int position) {
		Log.e("ImageFragmentAdapter", "position :" + position);
		String imageUrl = imageUrls.get(position);
		//= MobileStoreAppliction.getInstance().getService()
		//		.formartImageDownloadUrl(imageUrls.get(position));
		ImagePagerFragment instance = ImagePagerFragment.newInstance(
				mImageWorker, imageUrl);
		instance.setImagePoision(position);
		return instance;
	}

	/**
	 * 取得总数
	 */
	@Override
	public int getCount() {
		return imageUrls.size();
	}

	public ImageWorkerAdapter imageThumbWorkerUrlsAdapter = new ImageWorkerAdapter() {
		@Override
		public Object getItem(int index) {
			String imageUrl = imageUrls.get(index) ;
			//= MobileStoreAppliction.getInstance().getService()
				//	.formartImageDownloadUrl(imageUrls.get(index));
			return imageUrl;
		}

		@Override
		public int getSize() {
			return imageUrls.size();
		}
	};
}