RateBeerForAndroid.java

/*
    This file is part of RateBeer For Android.
    
    RateBeer for Android is free software: you can redistribute it 
    and/or modify it under the terms of the GNU General Public 
    License as published by the Free Software Foundation, either 
    version 3 of the License, or (at your option) any later version.

    RateBeer for Android is distributed in the hope that it will be 
    useful, but WITHOUT ANY WARRANTY; without even the implied warranty 
    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with RateBeer for Android.  If not, see 
    <http://www.gnu.org/licenses/>.
 */
package com.ratebeer.android.app;

import java.io.File;

import android.app.Application;
import android.content.Context;
import android.os.Environment;

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import com.nostra13.universalimageloader.cache.disc.impl.FileCountLimitedDiscCache;
import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;
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import com.nostra13.universalimageloader.cache.disc.impl.LimitedAgeDiscCache;
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import com.nostra13.universalimageloader.cache.memory.impl.UsingFreqLimitedMemoryCache;
import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration.Builder;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;

public class RateBeerForAndroid extends Application {

	public static final String DEFAULT_FILES_DIR = Environment.getExternalStorageDirectory().toString()
			+ "/RateBeerForAndroid";

	private static ImageLoader imageCache;

	public static ImageLoader getImageCache(Context context) {
		if (imageCache == null) {
			imageCache = ImageLoader.getInstance();
			Builder imageCacheBuilder = new ImageLoaderConfiguration.Builder(context).defaultDisplayImageOptions(
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					new DisplayImageOptions.Builder().cacheInMemory().cacheOnDisc()
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					new DisplayImageOptions.Builder().cacheInMemory(true).cacheOnDisc(true)
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							.imageScaleType(ImageScaleType.IN_SAMPLE_INT).build()).memoryCache(
					new UsingFreqLimitedMemoryCache(2 * 1024 * 1024));
			File imageCacheDir = new File(RateBeerForAndroid.DEFAULT_FILES_DIR + "/cache/");
			imageCacheDir.mkdirs();
			// Only if the cache directory is valid (and we can list its files) do we use a local disk cache
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			if (imageCacheDir != null || imageCacheDir.listFiles() == null) {
				imageCacheBuilder
						.discCache(new FileCountLimitedDiscCache(imageCacheDir, new Md5FileNameGenerator(), 25));
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			// Max cache age is 1 hour
			if (imageCacheDir != null || imageCacheDir.listFiles() == null) {
				imageCacheBuilder.discCache(new LimitedAgeDiscCache(imageCacheDir, 60 * 60));
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			}
			imageCache.init(imageCacheBuilder.build());
		}
		return imageCache;
	}

}