Google Pay

<?xml version='1.0' encoding='utf-8'?>
<resources>
    <string name="app_name">capacitor-stripe</string>
    <string name="title_activity_main">capacitor-stripe</string>
    <string name="package_name">io.ionic.starter</string>
    <string name="custom_url_scheme">io.ionic.starter</string>

    <string name="publishable_key">Your Publishable Key</string>
    <bool name="enable_google_pay">true</bool>
    <string name="country_code">US</string>
    <string name="merchant_display_name">Widget Store</string>
    <bool name="google_pay_is_testing">true</bool>

    <bool name="email_address_required">true</bool>
    <bool name="phone_number_required">true</bool>
    <bool name="billing_address_required">true</bool>
    <string name="billing_address_format">Full</string>

    <bool name="google_pay_existing_payment_method_required">false</bool>
</resources>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="io.ionic.starter">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">

        <activity
            android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|smallestScreenSize|screenLayout|uiMode"
            android:name="io.ionic.starter.MainActivity"
            android:label="@string/title_activity_main"
            android:theme="@style/AppTheme.NoActionBarLaunch"
            android:launchMode="singleTask">

            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

        </activity>

        <provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="${applicationId}.fileprovider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/file_paths"></meta-data>
        </provider>

        <meta-data
          android:name="com.google.android.gms.wallet.api.enabled"
          android:value="true" />

        <meta-data
          android:name="com.getcapacitor.community.stripe.enable_google_pay"
          android:value="@bool/enable_google_pay"/>

        <meta-data
          android:name="com.getcapacitor.community.stripe.publishable_key"
          android:value="@string/publishable_key"/>

        <meta-data
          android:name="com.getcapacitor.community.stripe.country_code"
          android:value="@string/country_code"/>

        <meta-data
          android:name="com.getcapacitor.community.stripe.merchant_display_name"
          android:value="@string/merchant_display_name"/>

        <meta-data
          android:name="com.getcapacitor.community.stripe.google_pay_is_testing"
          android:value="@bool/google_pay_is_testing"/>

        <meta-data
          android:name="com.getcapacitor.community.stripe.email_address_required"
          android:value="@bool/email_address_required"/>

        <meta-data
          android:name="com.getcapacitor.community.stripe.phone_number_required"
          android:value="@bool/phone_number_required"/>

        <meta-data
          android:name="com.getcapacitor.community.stripe.billing_address_required"
          android:value="@bool/billing_address_required"/>

        <meta-data
          android:name="com.getcapacitor.community.stripe.billing_address_format"
          android:value="@string/billing_address_format"/>

        <meta-data
          android:name="com.getcapacitor.community.stripe.google_pay_existing_payment_method_required"
          android:value="@bool/google_pay_existing_payment_method_required"/>
    </application>

    <!-- Permissions -->

    <uses-permission android:name="android.permission.INTERNET" />
</manifest>

import { firstValueFrom } from 'rxjs';
import { GooglePayEventsEnum, Stripe } from '@capacitor-community/stripe';

(async () => {
  try {
    await Stripe.isGooglePayAvailable();
  } catch {
    return;
  }

  Stripe.addListener(GooglePayEventsEnum.Completed, () => {
    console.log('GooglePayEventsEnum.Completed');
  });

  // Connect to your backend endpoint, and get paymentIntent.
  const { paymentIntent } = await firstValueFrom(this.http.post<{
    paymentIntent: string;
  }>(environment.api + 'intent', {}));

  // Prepare Google Pay
  await Stripe.createGooglePay({
    paymentIntentClientSecret: paymentIntent,

    // Web only. Google Pay on Android App doesn't need
    paymentSummaryItems: [{
      label: 'Product Name',
      amount: 1099.00
    }],
    merchantIdentifier: 'merchant.com.getcapacitor.stripe',
    countryCode: 'US',
    currency: 'USD',
  });

  // Present Google Pay
  const result = await Stripe.presentGooglePay();
  if (result.paymentResult === GooglePayEventsEnum.Completed) {
    // Happy path
  }
})();