public void clearAllCache(Context ctx) {
BreadcrumbsTracks.initCacheVariables();
setChanged();
clearPersistentCache(ctx);
notifyObservers();
}
/**
* Read the static breadcrumbs data from private file
*
* @param ctx
* @return is refresh is needed
*/
@SuppressWarnings("unchecked")
public boolean readCache(Context ctx) {
FileInputStream fis = null;
ObjectInputStream ois = null;
Date bundlesPersisted = null, activitiesPersisted = null;
Object[] cache;
synchronized (BREADCRUMSB_BUNDLES_CACHE_FILE) {
try {
fis = ctx.openFileInput(BREADCRUMSB_BUNDLES_CACHE_FILE);
ois = new ObjectInputStream(fis);
cache = (Object[]) ois.readObject();
// new Object[] { CACHE_VERSION, new Date(), sActivitiesWithBundles, sBundlesWithTracks,
// sBundleMappings, sTrackMappings };
if (cache[0] instanceof Integer && CACHE_VERSION.equals(cache[0])) {
bundlesPersisted = (Date) cache[1];
HashMap<Integer, List<Integer>> bundles = (HashMap<Integer, List<Integer>>) cache[2];
HashMap<Integer, Map<String, String>> bundlemappings =
(HashMap<Integer, Map<String, String>>) cache[3];
HashMap<Integer, Map<String, String>> trackmappings =
(HashMap<Integer, Map<String, String>>) cache[4];
sBundlesWithTracks = bundles != null ? bundles : sBundlesWithTracks;
sBundleMappings = bundlemappings != null ? bundlemappings : sBundleMappings;
sTrackMappings = trackmappings != null ? trackmappings : sTrackMappings;
} else {
clearPersistentCache(ctx);
}
fis = ctx.openFileInput(BREADCRUMSB_ACTIVITY_CACHE_FILE);
ois = new ObjectInputStream(fis);
cache = (Object[]) ois.readObject();
// new Object[] { CACHE_VERSION, new Date(), sActivityMappings };
if (cache[0] instanceof Integer && CACHE_VERSION.equals(cache[0])) {
activitiesPersisted = (Date) cache[1];
HashMap<Integer, Map<String, String>> activitymappings =
(HashMap<Integer, Map<String, String>>) cache[2];
sActivityMappings = activitymappings != null ? activitymappings : sActivityMappings;
} else {
clearPersistentCache(ctx);
}
} catch (OptionalDataException e) {
clearPersistentCache(ctx);
Log.w(TAG, "Unable to read persisted breadcrumbs cache", e);
} catch (ClassNotFoundException e) {
clearPersistentCache(ctx);
Log.w(TAG, "Unable to read persisted breadcrumbs cache", e);
} catch (IOException e) {
clearPersistentCache(ctx);
Log.w(TAG, "Unable to read persisted breadcrumbs cache", e);
} catch (ClassCastException e) {
clearPersistentCache(ctx);
Log.w(TAG, "Unable to read persisted breadcrumbs cache", e);
} catch (ArrayIndexOutOfBoundsException e) {
clearPersistentCache(ctx);
Log.w(TAG, "Unable to read persisted breadcrumbs cache", e);
} finally {
if (fis != null) {
try {
fis.close();
} catch (IOException e) {
Log.w(TAG, "Error closing file stream after reading cache", e);
}
}
if (ois != null) {
try {
ois.close();
} catch (IOException e) {
Log.w(TAG, "Error closing object stream after reading cache", e);
}
}
}
}
setChanged();
notifyObservers();
boolean refreshNeeded = false;
refreshNeeded = refreshNeeded || bundlesPersisted == null || activitiesPersisted == null;
refreshNeeded =
refreshNeeded
|| (activitiesPersisted.getTime() < new Date().getTime() - CACHE_TIMEOUT * 10);
refreshNeeded =
refreshNeeded || (bundlesPersisted.getTime() < new Date().getTime() - CACHE_TIMEOUT);
return refreshNeeded;
}