public String getstartCursor(String key) {
String startCursor = null;
try {
DiskLruCache.Snapshot snapShot = diskCache.get(key);
if (snapShot != null) {
InputStream in = snapShot.getInputStream(0);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
// 读取缓存
byte[] buffer = new byte[2048];
int length = 0;
while ((length = in.read(buffer)) != -1) {
bos.write(buffer, 0, length); // 写入输出流
}
in.close(); // 读取完毕，关闭输入流
startCursor = bos.toString();
// System.out.println("getstartCursor "+key+"|"+startCursor);
}
} catch (IOException e) {
e.printStackTrace();
}
return startCursor;
}
public Bitmap getBitmap(String key) {
if (key == null) {
return null;
}
Bitmap bitmap = getBitmapFromMemCache(key);
if (bitmap != null) {
return bitmap;
}
DiskLruCache.Snapshot snapshot = null;
try {
snapshot = _diskCache.get(key);
if (snapshot == null) {
return null;
}
final InputStream in = snapshot.getInputStream(0);
if (in != null) {
final BufferedInputStream buffIn = new BufferedInputStream(in, Utilities.IO_BUFFER_SIZE);
bitmap = BitmapFactory.decodeStream(buffIn);
}
} catch (IOException e) {
e.printStackTrace();
} finally {
if (snapshot != null) {
snapshot.close();
}
}
return bitmap;
}
public ArrayList<FavURLShow> getFavurlshowlist(String key) {
ArrayList<FavURLShow> list = null;
try {
DiskLruCache.Snapshot snapShot = diskCache.get(key);
if (snapShot != null) {
ObjectInputStream in = new ObjectInputStream(snapShot.getInputStream(0));
list = (ArrayList<FavURLShow>) in.readObject();
}
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return list;
}
@Override
public Bitmap getBitmap(String url) {
Bitmap bitmap = null;
if (mMemoryCache.get(url) != null) {
bitmap = mMemoryCache.get(url);
} else {
String key = CommonUtils.encryptionWithMD5(url);
try {
if (mDiskLruCache.get(key) != null) {
CommonUtils.log("hehe");
DiskLruCache.Snapshot snapShot = mDiskLruCache.get(key);
InputStream is = snapShot.getInputStream(0);
bitmap = BitmapFactory.decodeStream(is);
}
} catch (IOException e) {
e.printStackTrace();
}
}
return bitmap;
}
public boolean containsKey(String key) {
if (key == null) {
return false;
}
boolean contained = false;
DiskLruCache.Snapshot snapshot = null;
try {
snapshot = _diskCache.get(key);
contained = snapshot != null;
} catch (IOException e) {
e.printStackTrace();
} finally {
if (snapshot != null) {
snapshot.close();
}
}
return contained;
}
public CacheItem getFromDiskCache(final String url, boolean checkExpiration) {
CacheItem result = null;
if (null != mDiskCache) {
checkNotOnMainThread();
try {
final String key = transformUrlForDiskCacheKey(url);
DiskLruCache.Snapshot snapshot = mDiskCache.get(key);
if (null != snapshot) {
Object value = readValueFromDisk(snapshot.getInputStream(0));
DateTime expiresAt = new DateTime(readExpirationFromDisk(snapshot.getInputStream(1)));
if (value != null) {
if (checkExpiration && expiresAt.isBeforeNow()) {
mDiskCache.remove(key);
scheduleDiskCacheFlush();
} else {
result = new CacheItem(value, expiresAt);
if (null != mMemoryCache) {
mMemoryCache.put(url, result);
}
}
} else {
// If we get here, the file in the cache can't be
// decoded. Remove it and schedule a flush.
mDiskCache.remove(key);
scheduleDiskCacheFlush();
}
}
} catch (IOException e) {
Timber.e(e, "getFromDiskCache failed.");
}
}
return result;
}
