如何在iOS设备的flutter中集成Razorpay支付

import razorpay_flutter

// ...

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
  // ...

  GeneratedPluginRegistrant.register(with: self)

  // Initialize Razorpay
  RazorpayFlutterPlugin.initWithKey("YOUR_RAZORPAY_KEY", andDelegate: self)

  // ...
  
  return super.application(application, didFinishLaunchingWithOptions: launchOptions)
}

import 'package:razorpay_flutter/razorpay_flutter.dart';

// ...

Razorpay _razorpay;

// 初始化Razorpay
@override
void initState() {
  super.initState();
  _razorpay = Razorpay();
  _razorpay.on(Razorpay.EVENT_PAYMENT_SUCCESS, _handlePaymentSuccess);
  _razorpay.on(Razorpay.EVENT_PAYMENT_ERROR, _handlePaymentError);
  _razorpay.on(Razorpay.EVENT_EXTERNAL_WALLET, _handleExternalWallet);
}

// 打开支付页面
void openRazorpayPayment() {
  var options = {
    'key': 'YOUR_RAZORPAY_KEY',
    'amount': 1000, // 支付金额（以最小货币单位为单位，例如1000表示10.00 INR）
    'name': 'Merchant Name',
    'description': 'Product Description',
    'prefill': {'contact': '1234567890', 'email': 'test@example.com'},
  };

  try {
    _razorpay.open(options);
  } catch (e) {
    debugPrint('Error: $e');
  }
}

// 处理支付成功事件
void _handlePaymentSuccess(PaymentSuccessResponse response) {
  // 处理支付成功逻辑
}

// 处理支付失败事件
void _handlePaymentError(PaymentFailureResponse response) {
  // 处理支付失败逻辑
}

// 处理外部钱包支付事件
void _handleExternalWallet(ExternalWalletResponse response) {
  // 处理外部钱包支付逻辑
}

// 释放Razorpay资源
@override
void dispose() {
  super.dispose();
  _razorpay.clear();
}