// Removes the old files if the data is wiped.
private static void removeOldFilesIfNecessary(Context context) {
SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(context);
int n = 0;
try {
n = pref.getInt(KEY_CACHE_UP_TO_DATE, 0);
} catch (Throwable t) {
// ignore.
}
if (n != 0) return;
pref.edit().putInt(KEY_CACHE_UP_TO_DATE, 1).commit();
/// M: [BEHAVIOR.MODIFY] @{
/*File cacheDir = context.getExternalCacheDir();*/
File cacheDir = FeatureHelper.getExternalCacheDir(context);
if (cacheDir == null) {
Log.e(TAG, "<removeOldFilesIfNecessary> failed to get cache dir");
return;
}
/// @}
String prefix = cacheDir.getAbsolutePath() + "/";
BlobCache.deleteFiles(prefix + "imgcache");
BlobCache.deleteFiles(prefix + "rev_geocoding");
BlobCache.deleteFiles(prefix + "bookmark");
}
// Return null when we cannot instantiate a BlobCache, e.g.:
// there is no SD card found.
// This can only be called from data thread.
public static BlobCache getCache(
Context context, String filename, int maxEntries, int maxBytes, int version) {
synchronized (sCacheMap) {
if (!sOldCheckDone) {
removeOldFilesIfNecessary(context);
sOldCheckDone = true;
}
BlobCache cache = sCacheMap.get(filename);
if (cache == null) {
/// M: [BEHAVIOR.MODIFY] @{
/*File cacheDir = context.getExternalCacheDir();*/
File cacheDir = FeatureHelper.getExternalCacheDir(context);
if (cacheDir == null) {
Log.e(TAG, "<getCache> failed to get cache dir");
return null;
}
/// @}
String path = cacheDir.getAbsolutePath() + "/" + filename;
try {
/// M: [DEBUG.ADD] @{
Log.i(TAG, "<getCache> new BlobCache, path = " + path);
/// @}
cache = new BlobCache(path, maxEntries, maxBytes, false, version);
sCacheMap.put(filename, cache);
} catch (IOException e) {
Log.e(TAG, "Cannot instantiate cache!", e);
}
}
return cache;
}
}