getAll method
Returns all keys and values on the the platform that match provided parameters
.
If no restrictions are provided, fetches all entries stored on the platform.
Ignores any entries of types which are incompatible with shared_preferences.
Implementation
Future<Map<String, Object?>> getAll({Set<String>? allowList}) async {
final GetPreferencesParameters parameters = GetPreferencesParameters(
filter: PreferencesFilters(allowList: allowList));
return _platform.getPreferences(parameters, _options);
}