可以通过Xamarin安卓应用程序直接使用谷歌Play BillingClient吗？

dependencies {
    implementation 'com.android.billingclient:billing:4.0.0'
}

<uses-permission android:name="com.android.vending.BILLING" />

using Android.Content;
using Com.Android.Billingclient;
using Com.Android.Billingclient.Api;

public class BillingService
{
    private BillingClient billingClient;

    public BillingService(Context context)
    {
        billingClient = BillingClient.NewBuilder(context)
            .SetListener(this)
            .EnablePendingPurchases()
            .Build();

        billingClient.StartConnection(new BillingClientStateListener
        {
            OnConnected = () =>
            {
                // The BillingClient is ready. You can query purchases here.
            },
            OnDisconnected = () =>
            {
                // Try to restart the connection on the next request to
                // Google Play by calling the StartConnection() method.
            }
        });
    }
}

public void QuerySkuDetailsAsync(List<string> skuIds)
{
    SkuDetailsParams.Builder builder = SkuDetailsParams.NewBuilder();
    builder.SetType(BillingClientSdkConstants.TypeInapp);
    builder.SetSkusList(skuIds);

    billingClient.QuerySkuDetailsAsync(builder.Build(),
        (responseCode, skuDetailsList) =>
        {
            // Process the list of SkuDetails objects here.
        });
}

public void LaunchBillingFlow(Activity activity, SkuDetails skuDetails)
{
    BillingFlowParams billingFlowParams = BillingFlowParams.NewBuilder()
        .SetSkuDetails(skuDetails)
        .Build();
    billingClient.LaunchBillingFlow(activity, billingFlowParams);
}

public class MyBillingListener : PurchasesUpdatedListener
{
    public override void OnPurchasesUpdated(BillingResult billingResult, IEnumerable<Purchase> purchases)
    {
        if (billingResult.ResponseCode == BillingClientSdkConstants.Ok)
        {
            // Handle successful purchases here.
        }
        else if (billingResult.ResponseCode == BillingClientSdkConstants.UserCancelled)
        {
            // Handle an error caused by a user cancelling the purchase flow.
        }
        else
        {
            // Handle any other error codes.
        }
    }
}