/*******************************************************************************
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* Copyright 2011-2014 Sergey Tarasevich
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*******************************************************************************/
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package com.nostra13.universalimageloader.utils;
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import com.nostra13.universalimageloader.cache.disc.DiskCache;
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import java.io.File;
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/**
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* Utility for convenient work with disk cache.<br />
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* <b>NOTE:</b> This utility works with file system so avoid using it on application main thread.
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*
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* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
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* @since 1.8.0
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*/
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public final class DiskCacheUtils {
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private DiskCacheUtils() {
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}
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/** Returns {@link File} of cached image or <b>null</b> if image was not cached in disk cache */
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public static File findInCache(String imageUri, DiskCache diskCache) {
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File image = diskCache.get(imageUri);
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return image != null && image.exists() ? image : null;
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}
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/**
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* Removed cached image file from disk cache (if image was cached in disk cache before)
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*
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* @return <b>true</b> - if cached image file existed and was deleted; <b>false</b> - otherwise.
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*/
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public static boolean removeFromCache(String imageUri, DiskCache diskCache) {
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File image = diskCache.get(imageUri);
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return image != null && image.exists() && image.delete();
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}
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}
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