flash static method
Implementation
static void flash(BuildContext context, String message,
{bool isError = false}) {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text(message),
backgroundColor: isError ? Colors.red : Colors.green,
behavior: SnackBarBehavior.floating,
duration: const Duration(seconds: 3),
),
);
}