import 'package:flutter/material.dart';

showNotification (Color backgroundColor, Color textColor, String text, BuildContext context, int? duration) {
  final snackBar = SnackBar(
      behavior: SnackBarBehavior.floating,
      duration: duration == null ? Duration(milliseconds: 1500) : Duration(milliseconds: duration),
      width: 280.0, // Width of the SnackBar.
      backgroundColor: backgroundColor,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(10.0),
      ),
      padding: const EdgeInsets.symmetric(
        horizontal: 10.0, // Inner padding for SnackBar content.
      ),
      content: Container(
        height: 32.5,
        child: Center(
          child: Text(
            text,
            textAlign: TextAlign.center,
            style: TextStyle(color: textColor),
          ),
        ),
      )
  );
  ScaffoldMessenger.of(context).showSnackBar(snackBar);
}