import 'package:flutter/material.dart'; class SnackBarService { // BuildContext? _buildContext; static SnackBarService instance = SnackBarService(); set buildContext(BuildContext _context) { _buildContext = _context; } void showSnackBarError(String _message) { ScaffoldMessenger.of(_buildContext!).showSnackBar( SnackBar( duration: Duration(seconds: 2), content: Text( _message, style: TextStyle( color: Colors.white, fontSize: 15, ), ), backgroundColor: Colors.red, ), ); } void showSnackBarSuccess(String _message) { ScaffoldMessenger.of(_buildContext!).showSnackBar( SnackBar( duration: Duration(seconds: 2), content: Text( _message, style: TextStyle( color: Colors.white, fontSize: 15, ), ), backgroundColor: Colors.green, ), ); } }