setString method
Stores a string value in SharedPreferences.
key: The key for the string value to be stored.value: The string value to store.
Implementation
Future<void> setString(String key, String value) async {
await ensureSharedPrefIsInitialized();
if (stringKeys.containsKey(key)) {
await prefs.setString(key, value);
} else {
throw Exception("Key '$key' is not implemented as string.");
}
}