支払いを受け付ける

import { useState, useEffect } from 'react';
import { StripeProvider } from '@stripe/stripe-react-native';

function App() {
  const [publishableKey, setPublishableKey] = useState('');

  const fetchPublishableKey = async () => {
    const key = await fetchKey(); // fetch key from your server here
    setPublishableKey(key);
  };

  useEffect(() => {
    fetchPublishableKey();
  }, []);

  return (
    <StripeProvider
      publishableKey={publishableKey}
      merchantIdentifier="merchant.identifier" // required for Apple Pay
      urlScheme="your-url-scheme" // required for 3D Secure and bank redirects
    >
      {/* Your app code here */}
    </StripeProvider>
  );
}

export default function CheckoutScreen() {
  const { initPaymentSheet, presentPaymentSheet } = useStripe();
  const [loading, setLoading] = useState(false);

  const fetchPaymentSheetParams = async () => {
    const response = await fetch(`${API_URL}/payment-sheet`, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
      },
    });
    const { paymentIntent, ephemeralKey, customer } = await response.json();

    return {
      paymentIntent,
      ephemeralKey,
      customer,
    };
  };

  const initializePaymentSheet = async () => {
    const {
      paymentIntent,
      ephemeralKey,
      customer,
    } = await fetchPaymentSheetParams();

    const { error } = await initPaymentSheet({
      merchantDisplayName: "Example, Inc.",
      customerId: customer,
      customerEphemeralKeySecret: ephemeralKey,
      paymentIntentClientSecret: paymentIntent,
      // Set `allowsDelayedPaymentMethods` to true if your business can handle payment
      //methods that complete payment after a delay, like SEPA Debit and Sofort.
      allowsDelayedPaymentMethods: true,
      defaultBillingDetails: {
        name: 'Jane Doe',
      }
    });
    if (!error) {
      setLoading(true);
    }
  };

  const openPaymentSheet = async () => {
    // see below
  };

  useEffect(() => {
    initializePaymentSheet();
  }, []);

  return (
    <Screen>
      <Button
        variant="primary"
        disabled={!loading}
        title="Checkout"
        onPress={openPaymentSheet}
      />
    </Screen>
  );
}

export default function CheckoutScreen() {
  // continued from above

  const openPaymentSheet = async () => {
    const { error } = await presentPaymentSheet();

    if (error) {
      Alert.alert(`Error code: ${error.code}`, error.message);
    } else {
      Alert.alert('Success', 'Your order is confirmed!');
    }
  };

  return (
    <Screen>
      <Button
        variant="primary"
        disabled={!loading}
        title="Checkout"
        onPress={openPaymentSheet}
      />
    </Screen>
  );
}

import { useEffect, useCallback } from 'react';
import { Linking } from 'react-native';
import { useStripe } from '@stripe/stripe-react-native';

export default function MyApp() {
  const { handleURLCallback } = useStripe();

  const handleDeepLink = useCallback(
    async (url: string | null) => {
      if (url) {
        const stripeHandled = await handleURLCallback(url);
        if (stripeHandled) {
          // This was a Stripe URL - you can return or add extra handling here as you see fit
        } else {
          // This was NOT a Stripe URL – handle as you normally would
        }
      }
    },
    [handleURLCallback]
  );

  useEffect(() => {
    const getUrlAsync = async () => {
      const initialUrl = await Linking.getInitialURL();
      handleDeepLink(initialUrl);
    };

    getUrlAsync();

    const deepLinkListener = Linking.addEventListener(
      'url',
      (event: { url: string }) => {
        handleDeepLink(event.url);
      }
    );

    return () => deepLinkListener.remove();
  }, [handleDeepLink]);

  return (
    <View>
      <AwesomeAppComponent />
    </View>
  );
}

await initPaymentSheet({
  ...
  returnURL: 'your-app://stripe-redirect',
  ...
});