Xamarin Google Pay 实施答案

【问题标题】：Xamarin Google Pay implementationXamarin Google Pay 实施
【发布时间】：2021-01-28 13:16:32
【问题描述】：

我正在尝试为 Android 制作一个简单的 Xamarin 应用程序，并有机会通过 Google Pay 付款。使用 Android.Gms.Wallet。在 AssemlyInfo 中添加了[assembly: MetaData("com.google.android.gms.wallet.api.enabled", Value = "true")]。

尝试在 OnCreate 方法中调用 MainActivity 中的 GooglePay 小部件：

openGooglePay(this,1000,5);

这就是方法：

void openGooglePay(Activity a, int money, int requestCode)
{
  PaymentsClient paymentsClient = WalletClass.GetPaymentsClient(this,
                 new WalletClass.WalletOptions.Builder()
                         .SetEnvironment(WalletConstants.EnvironmentTest)
                         .Build()
            );

  var request = PaymentDataRequest.FromJson(money.ToString());
  AutoResolveHelper.ResolveTask(paymentsClient.LoadPaymentData(request), a, requestCode);
}

但是我的手机屏幕是空的。

可能是什么问题？

【问题讨论】：

这个网站是为你的代码中的特定问题而设计的。这个问题太模糊了。

标签： c# android xamarin google-pay

【解决方案1】：

好吧，我找到了我的问题的答案 - 只是将java/kotlin code 重写为 c#。

public const int LOAD_PAYMENT_DATA_REQUEST_CODE = 991;

在活动中调用openGooglePay(this,1);，例如在OnCreate

void openGooglePay(Activity act, int money)
    {
        PaymentsClient paymentsClient = WalletClass.GetPaymentsClient(
             this,
             new WalletClass.WalletOptions.Builder()
                     .SetEnvironment(WalletConstants.EnvironmentTest)
                     .Build()
        );

        TransactionInfo tran = TransactionInfo.NewBuilder()
            .SetTotalPriceStatus(WalletConstants.TotalPriceStatusFinal)
            .SetTotalPrice(money.ToString())
            .SetCurrencyCode("USD")
            .Build();

        var req = createPaymentDataRequest(tran);

        var futurePay = paymentsClient.LoadPaymentData(req);
        
    AutoResolveHelper.ResolveTask(futurePay, act, LOAD_PAYMENT_DATA_REQUEST_CODE);
}

PaymentDataRequest createPaymentDataRequest(TransactionInfo transactionInfo)
    {
        var paramsBuilder = PaymentMethodTokenizationParameters.NewBuilder()
            .SetPaymentMethodTokenizationType(
            WalletConstants.PaymentMethodTokenizationTypePaymentGateway)
            .AddParameter("gateway", "myGateway")
            .AddParameter("gatewayMerchantId", "myMerchant");

            return createPaymentDataRequest(transactionInfo, paramsBuilder.Build());

}

    private PaymentDataRequest createPaymentDataRequest(TransactionInfo transactionInfo, PaymentMethodTokenizationParameters paymentMethodTokenizationParameters)
    {
        return PaymentDataRequest.NewBuilder()
            .SetPhoneNumberRequired(false)
            .SetEmailRequired(false)
            .SetShippingAddressRequired(false)
   .SetTransactionInfo(transactionInfo)
   .AddAllowedPaymentMethods(new List<Integer>() { (Integer)WalletConstants.PaymentMethodCard, (Integer)WalletConstants.PaymentMethodTokenizedCard })
   .SetCardRequirements(
       CardRequirements.NewBuilder()
           .AddAllowedCardNetworks(new List<Integer>() { (Integer)WalletConstants.CardNetworkVisa, (Integer)WalletConstants.CardNetworkMastercard })
           .SetAllowPrepaidCards(true)
           .SetBillingAddressFormat(WalletConstants.BillingAddressFormatFull)
           .Build()
   )
   .SetPaymentMethodTokenizationParameters(paymentMethodTokenizationParameters)
   .SetUiRequired(true)
   .Build();
    }

【讨论】：