[Flutter] my_util.dart

import 'package:flutter/material.dart';
import 'package:fluttertoast/fluttertoast.dart';

class MyUtils {
  /// Get DateTime format date input and return numbered data/time digit
  /// so returns 20230712
  static int getFormatTime(DateTime date) {
    return int.parse(
        "${date.year}${makeTwoDigit(date.month)}${makeTwoDigit(date.day)}");
  }

  /// Get numbered data/time digit number and returns DateTime format data
  /// so get 20230712 and returns DateTime format
  static DateTime numToDateTime(int date) {
    String d = date.toString();
    // 20210708
    int year = int.parse(d.substring(0, 4));
    int month = int.parse(d.substring(4, 6));
    int day = int.parse(d.substring(6, 8));

    return DateTime(year, month, day);
  }

  /// Get number and returns with two digit
  /// so get '1' and returns '01'
  static String makeTwoDigit(int num) {
    return num.toString().padLeft(2, "0");
  }

  /// Show snackbar on screen with given string type message, int type duration in ms
  static showSnackBar(BuildContext context, String msg, int durationInMs) {
    String str = msg;

    var snackBar = SnackBar(
      content: Text(str),
      duration: Duration(milliseconds: durationInMs),
    );
    ScaffoldMessenger.of(context).showSnackBar(snackBar);
  }

  /// Show toast bar with given string type message
  static void showToast(String msg) {
    Fluttertoast.showToast(
        msg: msg,
        toastLength: Toast.LENGTH_SHORT,
        gravity: ToastGravity.CENTER,
        timeInSecForIosWeb: 1,
        backgroundColor: Colors.red,
        textColor: Colors.white,
        fontSize: 16.0);
  }
}