カード支払いの事前設定

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>
  );
}

import { CardField, useStripe } from '@stripe/stripe-react-native';

function PaymentScreen() {
  // ...
  return (
    <View>
      <CardField
        postalCodeEnabled={true}
        placeholders={{
          number: '4242 4242 4242 4242',
        }}
        cardStyle={{
          backgroundColor: '#FFFFFF',
          textColor: '#000000',
        }}
        style={{
          width: '100%',
          height: 50,
          marginVertical: 30,
        }}
        onCardChange={(cardDetails) => {
          console.log('cardDetails', cardDetails);
        }}
        onFocus={(focusedField) => {
          console.log('focusField', focusedField);
        }}
      />
    </View>
  );
}

function PaymentScreen() {
  // ...

  const { confirmSetupIntent, loading } = useConfirmSetupIntent();

  // ...

  const handlePayPress = async () => {
    // Gather the customer's billing information (for example, email)
    const billingDetails: BillingDetails = {
      email: 'jenny.rosen@example.com',
    };
    // Create a setup intent on the backend
    const clientSecret = await createSetupIntentOnBackend();
    const { setupIntent, error } = await confirmSetupIntent(clientSecret, {
      paymentMethodType: 'Card',
      paymentMethodData: {
        billingDetails,
      }
    });

    if (error) {
      //Handle the error
    }
    // ...
  };

  return (
    <View>
      // ...
      <Button onPress={handlePayPress} title="Save" loading={loading} />
    </View>
  );
}

function PaymentScreen() {
  // ...

  const {retrievePaymentIntent} = useStripe();

  // ...

  const handleRecoveryFlow = async () => {
    const {paymentIntent, error} = await retrievePaymentIntent(clientSecret);

    if (error) {
      Alert.alert(`Error: ${error.code}`, error.message);
    } else if (paymentIntent) {
      // Default to a generic error message
      const failureReason = 'Payment failed, try again.';
      if (paymentIntent.lastPaymentError.type === 'Card') {
        failureReason = paymentIntent.lastPaymentError.message;
      }
    }
  };

  return (
    <View>
      // ...
      <Button
        onPress={handleRecoveryFlow}
        title="Recovery flow"
        loading={loading}
      />
    </View>
  );
}

function PaymentScreen() {
  // ...

  const {retrievePaymentIntent} = useStripe();

  // ...

  const handleRecoveryFlow = async () => {
    const {paymentIntent, error} = await retrievePaymentIntent(clientSecret);

    if (error) {
      Alert.alert(`Error: ${error.code}`, error.message);
    } else if (paymentIntent) {
      // Default to a generic error message
      let failureReason = 'Payment failed, try again.';
      if (paymentIntent.lastPaymentError.type === 'Card') {
        failureReason = paymentIntent.lastPaymentError.message;
      }

      // If the last payment error is authentication_required, let the customer
      // complete the payment without asking them to reenter their details.
      if (paymentIntent.lastPaymentError?.code === 'authentication_required') {
        // Let the customer complete the payment with the existing PaymentMethod
        const {error} = await confirmPayment(paymentIntent.clientSecret, {
          paymentMethodType: 'Card',
          paymentMethodData: {
            billingDetails,
            paymentMethodId: paymentIntent.lastPaymentError?.paymentMethod.id,
          },
        });

        if (error) {
          // handle error
        }
      } else {
        // Collect a new PaymentMethod from the customer
      }
    }
  };

  return (
    <View>
      // ...
      <Button
        onPress={handleRecoveryFlow}
        title="Recovery flow"
        loading={loading}
      />
    </View>
  );
}