/**
* Loads the last known database version of the accounts' databases from a {@link
* SharedPreference}.
*
* <p>If the stored version matches {@link LocalStore#DB_VERSION} we know that the databases are
* up to date.<br>
* Using {@code SharedPreferences} should be a lot faster than opening all SQLite databases to get
* the current database version.
*
* <p>See {@link UpgradeDatabases} for a detailed explanation of the database upgrade process.
*
* @see #areDatabasesUpToDate()
*/
public void checkCachedDatabaseVersion() {
sDatabaseVersionCache = getSharedPreferences(DATABASE_VERSION_CACHE, MODE_PRIVATE);
int cachedVersion = sDatabaseVersionCache.getInt(KEY_LAST_ACCOUNT_DATABASE_VERSION, 0);
if (cachedVersion >= LocalStore.DB_VERSION) {
K9.setDatabasesUpToDate(false);
}
}
