How to use Apple pay with Flutter?

After lots of switching packages, configuring gradles, installing pods to make it work. I am finally happy to see google putting an end to this battle with the introduction of pay library. As the name is, its really simple and straight forward, yet I felt there must be some resource out on the internet to help devs to implement such a feature in short time so that you can focus on developing something really awesome.

I am making it very simple where you can just copy paste bunch of lines below and make it work.

First off all you need the following:

• Apple Pay developer account.
• Mac Device to open Xcode.
• Real iOS device to test apple pay or (you can use the simulator but apple pay token will return null).
• Create Tester account in apple developer account to use testing cards (sandbox tester).

1- Setup Code:

• Install pay package flutter pub add pay
• add apple pay button in your screen :

import 'package:flutter/material.dart';
import 'package:pay/pay.dart';
const _paymentItems = [
PaymentItem(
label: '<Add Your merchant name or the displayName you added in the json file apple_pay.json ex:Facebook',
amount: '99.99',
status: PaymentItemStatus.final_price,
)
];
class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Apple Pay Example'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            ApplePayButton(
              paymentConfigurationAsset: 'applepay.json',
              paymentItems: _paymentItems,
              style: ApplePayButtonStyle.black,
              type: ApplePayButtonType.buy,
              width: 200,
              height: 50,
              margin: const EdgeInsets.only(top: 15.0),
              onPaymentResult: (value) {
                print(value);
              },
              onError: (error) {…