loadCache method
Load SharedPreferences cache
Implementation
Future<void> loadCache() async {
try {
final prefs = await SharedPreferences.getInstance();
final allPrefsKeys = prefs.getKeys();
for (final pkey in allPrefsKeys) {
if (pkey.startsWith(_rcCachePrefix)) {
final key = pkey.substring(_rcCachePrefix.length);
final v = prefs.getString(pkey);
if (v != null) _cache[key] = v;
}
}
} catch (e) {
debugPrint("Cache load error: $e");
}
}