🪙 Flutter Pay Buttons

A modern, customizable Flutter plugin that provides ready-made Pay buttons — including Apple Pay, Google Pay, and more — using a simple, developer-friendly API.

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✨ Features

✅ Prebuilt buttons for Apple Pay, Google Pay, etc.
✅ Fully customizable UI (color, radius, text, child widget).
✅ Built on top of the official pay package.
✅ Simple callback for handling payment results.
✅ Scalable and responsive with pr, sp, and ScaledEdgeInsets.

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📦 Installation

Add the dependency in your pubspec.yaml:

dependencies:
  flutter_pay_buttons: ^0.0.4

Then, import it:

import 'package:flutter_pay_buttons/flutter_pay_buttons.dart';

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🚀 Quick Start (Apple Pay Example)

ApplePayButton(
  merchantId: 'merchant.YOUR_MERCHANT_ID',
  merchantName: 'Example Merchant',
  amount: '49.99',
  paymentItems: const [
    PaymentItem(label: 'Product', amount: '49.99', status: PaymentItemStatus.final_price, type: PaymentItemType.item),
    PaymentItem(label: 'Total', amount: '49.99', status: PaymentItemStatus.final_price),
  ],
  onPaymentResult: (result) {
    print('Payment result: $result');
  },
)

---

🚀 Quick Start (Google Pay Example)

GooglePayButton(
 totalPrice: '10.00',
 merchantId: 'YOUR_MERCHANT_ID',
 merchantName: 'Example Merchant',
 publicKey: 'YOUR_PUBLIC_KEY_HERE',
 tokenizationSpecificationType: TokenizationSpecificationType.direct,
 isTesting: true,
 paymentItems: [PaymentItem(label: 'Total', amount: '99.99', status: PaymentItemStatus.final_price)],
 onPaymentResult: (result) {
  debugPrint('Payment Result: $result');
 },
)

---

⚙️ Parameters (Apple Pay)

Parameter	Type	Required	Description
merchantId	String	✅	The Apple Pay merchant ID.
merchantName	String	✅	The display name shown in the Apple Pay sheet.
amount	String	✅	The total payment amount for the transaction.
paymentItems	List<PaymentItem>	✅	List of payment items displayed in the Apple Pay sheet.
onPaymentResult	Function(Map<String, dynamic>)	✅	Callback triggered after receiving the Apple Pay result.
height	double?	❌	Custom height of the button.
width	double?	❌	Custom width of the button (must be at least 220).
margin	EdgeInsets?	❌	External padding around the button.
backgroundColor	Color?	❌	Background color of the Apple Pay button.
cornersRadius	double?	❌	Corner radius of the button for rounded edges.
merchantCapabilities	List<MerchantCapability>?	❌	Supported merchant capabilities (e.g. 3DS, Credit, Debit).
supportedNetworks	List<ApplePaySupportedNetwork>?	❌	Supported card networks for Apple Pay (e.g. visa, masterCard).
countryCode	String?	❌	The ISO country code (e.g. US, PK).
currencyCode	String?	❌	The currency code used for the transaction (e.g. USD, PKR).
requiredBillingContactFields	List<ApplePayContactFields>?	❌	Fields required for billing contact information.
requiredShippingContactFields	List<ApplePayContactFields>?	❌	Fields required for shipping contact information.
mainAxisAlignment	MainAxisAlignment	❌	Alignment of content inside the button row.
mainAxisSize	MainAxisSize	❌	Layout size behavior of the button (default: MainAxisSize.min).
child	Widget?	❌	Custom widget to replace the default Apple Pay button UI.

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⚙️ Parameters (Google Pay)

Parameter	Type	Required	Description
merchantId	String	✅	The Google Pay merchant ID.
merchantName	String	✅	The merchant name displayed in the payment sheet.
totalPrice	String	✅	The total transaction amount.
paymentItems	List<PaymentItem>	✅	List of payment items shown in the Google Pay sheet.
onPaymentResult	Function(Map<String, dynamic>)	✅	Callback triggered when the payment result is received.
height	double?	❌	Custom height of the button.
width	double?	❌	Custom width of the button (must be at least 220).
margin	EdgeInsets?	❌	External padding around the button.
backgroundColor	Color?	❌	Background color of the button.
cornersRadius	double?	❌	Corner radius for rounded edges.
isTesting	bool	❌	Enable testing mode for Google Pay.
checkoutOption	CheckoutOption	❌	Determines when payment is processed (e.g. CheckoutOption.lazy).
apiVersion	int?	❌	Google Pay API version (optional).
apiVersionMinor	int?	❌	Minor API version for Google Pay.
allowedCardNetworks	List<CardNetwork>?	❌	List of supported card networks (e.g. VISA, MASTERCARD).
billingAddressRequired	bool	❌	Whether billing address is required.
billingAddressFormat	BillingAddressFormat?	❌	Format of the billing address (e.g. FULL, MIN).
phoneNumberRequired	bool	❌	Whether phone number collection is required.
tokenizationSpecificationType	TokenizationSpecificationType	❌	Defines how payment data is tokenized (direct or paymentGateway).
tokenizationSpecificationParameters	Map<String, dynamic>?	❌	Parameters required when using paymentGateway tokenization.
publicKey	String?	❌	Public key used for direct tokenization.
currencyCode	String?	❌	Currency code (e.g. USD, PKR).
transactionInfoStatus	TransactionInfoStatus?	❌	Status type for the transaction (e.g. FINAL, ESTIMATED).
child	Widget?	❌	Custom child widget to override the default button content.
mainAxisAlignment	MainAxisAlignment	❌	Alignment of content inside the button row.
mainAxisSize	MainAxisSize	❌	Layout size behavior of the button (default: MainAxisSize.min).

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🧠 How It Works

1. Internally, ApplePayButton builds a configuration JSON for the pay package.
2. When tapped, it calls showPaymentSelector() to display the Apple Pay sheet.
3. The result (success, error, or cancellation) is returned via the onPaymentResult callback.

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🎨 Customizing the Button

You can replace the default layout with your own widget:

ApplePayButton(
  merchantId: 'merchant.com.example',
  merchantName: 'Custom Shop',
  amount: '29.99',
  paymentItems: const [
    PaymentItem(label: 'Shoes', amount: '29.99'),
  ],
  onPaymentResult: (result) => print(result),
  child: Container(
    padding: const EdgeInsets.all(16),
    decoration: BoxDecoration(
      color: Colors.black,
      borderRadius: BorderRadius.circular(12),
    ),
    child: Row(
      mainAxisAlignment: MainAxisAlignment.center,
      children: const [
        Icon(Icons.apple, color: Colors.white),
        SizedBox(width: 8),
        Text('Buy with Apple Pay', style: TextStyle(color: Colors.white)),
      ],
    ),
  ),
)

💙 Author

M-Tayyab-Mustafa
📧 m.tayyabmustafa.joiya@gmail.com
🌐 github.com/M-Tayyab-Mustafa

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💡 Notes

• Make sure to configure your Merchant ID.
• Always test on a real device (Apple Pay is not supported in simulators).

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Made with ❤️ in Flutter