/**
* Returns whether the image is stored in the disk cache.
*
* @param imageRequest the imageRequest for the image to be looked up.
* @return true if the image was found in the disk cache, false otherwise.
*/
public DataSource<Boolean> isInDiskCache(final ImageRequest imageRequest) {
final CacheKey cacheKey = mCacheKeyFactory.getEncodedCacheKey(imageRequest, null);
final SimpleDataSource<Boolean> dataSource = SimpleDataSource.create();
mMainBufferedDiskCache
.contains(cacheKey)
.continueWithTask(
new Continuation<Boolean, Task<Boolean>>() {
@Override
public Task<Boolean> then(Task<Boolean> task) throws Exception {
if (!task.isCancelled() && !task.isFaulted() && task.getResult()) {
return Task.forResult(true);
}
return mSmallImageBufferedDiskCache.contains(cacheKey);
}
})
.continueWith(
new Continuation<Boolean, Void>() {
@Override
public Void then(Task<Boolean> task) throws Exception {
dataSource.setResult(!task.isCancelled() && !task.isFaulted() && task.getResult());
return null;
}
});
return dataSource;
}
/** Clear disk caches */
public void clearDiskCaches() {
mMainBufferedDiskCache.clearAll();
mSmallImageBufferedDiskCache.clearAll();
}
/**
* Performs disk cache check synchronously. It is not recommended to use this unless you know what
* exactly you are doing. Disk cache check is a costly operation, the call will block the caller
* thread until the cache check is completed.
*
* @param imageRequest the imageRequest for the image to be looked up.
* @return true if the image was found in the disk cache, false otherwise.
*/
public boolean isInDiskCacheSync(final ImageRequest imageRequest) {
final CacheKey cacheKey = mCacheKeyFactory.getEncodedCacheKey(imageRequest, null);
return mMainBufferedDiskCache.diskCheckSync(cacheKey);
}
/**
* Removes all images with the specified {@link Uri} from disk cache.
*
* @param imageRequest The imageRequest for the image to evict from disk cache
*/
public void evictFromDiskCache(final ImageRequest imageRequest) {
CacheKey cacheKey = mCacheKeyFactory.getEncodedCacheKey(imageRequest, null);
mMainBufferedDiskCache.remove(cacheKey);
mSmallImageBufferedDiskCache.remove(cacheKey);
}
