JaveedIshaq

import 'package:fluttertoast/fluttertoast.dart';
/// Hardware back Button Press 
/// DateTime timeBackPressed = DateTime.now(); 
/// timeBackPressed is reviced from the View
Future<bool> willPopScopeLogic(DateTime timeBackPressed) async {
  final Duration difference = DateTime.now().difference(timeBackPressed);
  final bool isExitWarning = difference >= const Duration(seconds: 2);
  timeBackPressed = DateTime.now();

  if (isExitWarning) {

JaveedIshaq

import 'package:fluttertoast/fluttertoast.dart';
/// Hardware back Button Press 
/// DateTime timeBackPressed = DateTime.now(); 
/// timeBackPressed is reviced from the View
Future<bool> willPopScopeLogic(DateTime timeBackPressed) async {
  final Duration difference = DateTime.now().difference(timeBackPressed);
  final bool isExitWarning = difference >= const Duration(seconds: 2);
  timeBackPressed = DateTime.now();

  if (isExitWarning) {

JaveedIshaq

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

class DisplayCollection extends StatefulWidget {
  @override
  _DisplayCollectionState createState() => _DisplayCollectionState();
}

class _DisplayCollectionState extends State<DisplayCollection> {
  final Ref = Firestore.instance.collection("Countries");

JaveedIshaq

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Elevated Button',
      home: FlutterExample(),

JaveedIshaq

food_delivery_app_ui

a clean Design and Clean Code structure

JaveedIshaq

import 'package:flutter/material.dart';

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);
const Color PRIMARY_COLOR = Colors.indigo;
const Color ACCENT_COLOR = Colors.indigoAccent;
const Color BACKGROUND_COLOR = Colors.grey;


   ThemeData _buildTheme() {       
         final ThemeData base = ThemeData.light();

JaveedIshaq

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

void main() => runApp(new MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomePage(),

JaveedIshaq

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(

JaveedIshaq

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

/// the App Parent Widget
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {

JaveedIshaq

void main() {
  
String loveWork = 'i love work';
String lovePizza = loveWork.replaceAll('work', 'pizza');
print(lovePizza);
  
  
}