package com.weikou.beibeivideo.util.cache;
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import android.content.Context;
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import android.content.pm.PackageInfo;
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import android.content.pm.PackageManager;
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import com.lcjian.library.util.cache.DiskLruCache;
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import com.lcjian.library.util.common.StorageUtils;
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import java.io.File;
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import java.io.IOException;
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public class DiskLruCacheManager {
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private static DiskLruCacheManager instance;
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private DiskLruCache cache;
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private static int getVersionNum(Context context) {
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try {
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PackageInfo pi = context.getPackageManager().getPackageInfo(
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context.getPackageName(), 0);
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return pi.versionCode;
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} catch (PackageManager.NameNotFoundException e) {
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e.printStackTrace();
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return 1;
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}
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}
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public DiskLruCacheManager(Context context) {
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try {
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cache = DiskLruCache.open(
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new File(StorageUtils.getCacheDirectory(context)
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.toString(), "http"), getVersionNum(context),
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1, 1024 * 1024);
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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public static DiskLruCacheManager getInstance(Context context) {
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if (instance == null)
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instance = new DiskLruCacheManager(context);
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return instance;
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}
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public void cache(String key, String value) {
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if (cache == null)
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return;
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DiskLruCache.Editor editor = null;
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try {
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editor = cache
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.edit(key);
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editor.set(0, value);
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editor.commit();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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/**
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* 取缓存
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*
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* @param key
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* @return
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*/
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public String getCache(String key) {
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if (cache == null)
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return null;
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DiskLruCache.Snapshot snapshot = null;
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try {
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if (cache != null) {
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snapshot = cache.get(key);
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if (snapshot != null) {
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return snapshot.getString(0);
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}
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}
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} catch (IOException e) {
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e.printStackTrace();
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} finally {
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if (snapshot != null) {
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snapshot.close();
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}
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}
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return null;
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}
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}
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