Add close() to Download cache.

import java.nio.channels.FileChannel;

import java.util.zip.Adler32;

public class BlobCache {

public class BlobCache implements Closeable {

    private static final String TAG = "BlobCache";

    private static final int MAGIC_INDEX_FILE = 0xB3273030;

    // Close the cache. All resources are released. No other method should be

    // called after this is called.

    @Override

    public void close() {

        syncAll();

        closeAll();

package com.android.gallery3d.common;

import com.android.gallery3d.common.Entry.Table;

import android.content.ContentValues;

import android.content.Context;

import android.database.Cursor;

import android.database.sqlite.SQLiteOpenHelper;

import android.util.Log;

import com.android.gallery3d.common.Entry.Table;

import java.io.Closeable;

import java.io.File;

import java.io.IOException;

public class FileCache {

public class FileCache implements Closeable {

    private static final int LRU_CAPACITY = 4;

    private static final int MAX_DELETE_COUNT = 16;

        mDbHelper = new DatabaseHelper(context, dbName);

    }

    public void close() {

        mDbHelper.close();

    }

    public void store(String downloadUrl, File file) {

        if (!mInitialized) initialize();