readDouble static method
Implementation
static Future<double?> readDouble(String key, {String MMKVId = "default"}) async {
double? doubleResult;
String? doubleString = await SharedStore.readValue(key, valueType.doubleType, MMKVId);
if (doubleString != null) {
doubleResult = double.parse(doubleString);
}
return doubleResult;
}