GalleryAdapter.java

/*
 * Copyright 2013 Peng fei Pan
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package me.xiaopan.android.examples.adapter;

import me.xiaoapn.easy.imageloader.ImageLoader;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;

@SuppressWarnings("deprecation")
public class GalleryAdapter extends BaseAdapter{
	private Context context;
	private String[] urls;
	
	public GalleryAdapter (Context context, String[] urls){
		this.context = context;
		this.urls = urls;
	}
	
	@Override
	public int getCount() {
		return urls.length;
	}
	
	@Override
	public Object getItem(int position) {
		return urls[position];
	}

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

	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ViewHolder viewHolder;
		if(convertView == null){
			viewHolder = new ViewHolder();
			ImageView imageView = new ImageView(context);
			imageView.setLayoutParams(new Gallery.LayoutParams(Gallery.LayoutParams.FILL_PARENT, Gallery.LayoutParams.FILL_PARENT));
			imageView.setScaleType(ScaleType.FIT_CENTER);
			viewHolder.imageView = imageView;
			convertView = imageView;
			convertView.setTag(viewHolder);
		}else{
			viewHolder = (ViewHolder) convertView.getTag();
		}
		
		ImageLoader.getInstance().load(urls[position], viewHolder.imageView);
		return convertView;
	}
	
	private class ViewHolder{
		public ImageView imageView;
	}
}