Amazon IAP 不调用监听器回调（Kindle Fire、Xamarin）

Question

我正在尝试 [使用 Xamarin 在 Android 项目中实施亚马逊应用内购买。

设置

亚马逊的官方 Xamarin SDK 不支持较新的 64 位设备，因此我创建了 own Java library binding using Amazon's Java SDK. (Documentation for the Java version)

Xamarin 为 PurchasingService 生成的绑定如下所示：

namespace Com.Amazon.Device.Iap
{
    [Register ("com/amazon/device/iap/PurchasingService", DoNotGenerateAcw = true)]
    public sealed class PurchasingService : Object
    {
        //
        // Static Fields
        //
        private static IntPtr IS_SANDBOX_MODE_jfieldId;

        [Register ("SDK_VERSION")]
        public const string SdkVersion = "2.0.76.4";

        internal static IntPtr java_class_handle;

        private static IntPtr id_getUserData;

        private static IntPtr id_getProductData_Ljava_util_Set_;

        private static IntPtr id_getPurchaseUpdates_Z;

        private static IntPtr id_notifyFulfillment_Ljava_lang_String_Lcom_amazon_device_iap_model_FulfillmentResult_;

        private static IntPtr id_purchase_Ljava_lang_String_;

        private static IntPtr id_registerListener_Landroid_content_Context_Lcom_amazon_device_iap_PurchasingListener_;

        //
        // Static Properties
        //
        internal static IntPtr class_ref {
            get;
        }

        [Register ("IS_SANDBOX_MODE")]
        public static bool IsSandboxMode {
            get;
        }

        public static RequestId UserData {
            [Register ("getUserData", "()Lcom/amazon/device/iap/model/RequestId;", "GetGetUserDataHandler")]
            get;
        }

        //
        // Properties
        //
        protected override IntPtr ThresholdClass {
            get;
        }

        protected override Type ThresholdType {
            get;
        }

        //
        // Constructors
        //
        internal PurchasingService (IntPtr javaReference, JniHandleOwnership transfer);

        //
        // Static Methods
        //
        [Register ("getProductData", "(Ljava/util/Set;)Lcom/amazon/device/iap/model/RequestId;", "")]
        public static RequestId GetProductData (ICollection<string> p0);

        [Register ("getPurchaseUpdates", "(Z)Lcom/amazon/device/iap/model/RequestId;", "")]
        public static RequestId GetPurchaseUpdates (bool p0);

        [Register ("notifyFulfillment", "(Ljava/lang/String;Lcom/amazon/device/iap/model/FulfillmentResult;)V", "")]
        public static void NotifyFulfillment (string p0, FulfillmentResult p1);

        [Register ("purchase", "(Ljava/lang/String;)Lcom/amazon/device/iap/model/RequestId;", "")]
        public static RequestId Purchase (string p0);

        [Register ("registerListener", "(Landroid/content/Context;Lcom/amazon/device/iap/PurchasingListener;)V", "")]
        public static void RegisterListener (Context p0, IPurchasingListener p1);
    }
}

对于PurchasingListener接口：

namespace Com.Amazon.Device.Iap
{
    [Register ("com/amazon/device/iap/PurchasingListener", "", "Com.Amazon.Device.Iap.IPurchasingListenerInvoker")]
    public interface IPurchasingListener : IJavaObject, IDisposable
    {
        //
        // Methods
        //
        [Register ("onProductDataResponse", "(Lcom/amazon/device/iap/model/ProductDataResponse;)V", "GetOnProductDataResponse_Lcom_amazon_device_iap_model_ProductDataResponse_Handler:Com.Amazon.Device.Iap.IPurchasingListenerInvoker, AmazonIAP")]
        void OnProductDataResponse (ProductDataResponse p0);

        [Register ("onPurchaseResponse", "(Lcom/amazon/device/iap/model/PurchaseResponse;)V", "GetOnPurchaseResponse_Lcom_amazon_device_iap_model_PurchaseResponse_Handler:Com.Amazon.Device.Iap.IPurchasingListenerInvoker, AmazonIAP")]
        void OnPurchaseResponse (PurchaseResponse p0);

        [Register ("onPurchaseUpdatesResponse", "(Lcom/amazon/device/iap/model/PurchaseUpdatesResponse;)V", "GetOnPurchaseUpdatesResponse_Lcom_amazon_device_iap_model_PurchaseUpdatesResponse_Handler:Com.Amazon.Device.Iap.IPurchasingListenerInvoker, AmazonIAP")]
        void OnPurchaseUpdatesResponse (PurchaseUpdatesResponse p0);

        [Register ("onUserDataResponse", "(Lcom/amazon/device/iap/model/UserDataResponse;)V", "GetOnUserDataResponse_Lcom_amazon_device_iap_model_UserDataResponse_Handler:Com.Amazon.Device.Iap.IPurchasingListenerInvoker, AmazonIAP")]
        void OnUserDataResponse (UserDataResponse p0);
    }
}

我还确保 Android 清单修改为：

<receiver android:name = "com.amazon.device.iap.ResponseReceiver" >
    <intent-filter>
        <action android:name = "com.amazon.inapp.purchasing.NOTIFY"
          android:permission = "com.amazon.inapp.purchasing.Permission.NOTIFY" />
    </intent-filter>
</receiver>

Amazon App Tester 安装在我的 Kindle 上并配置了以下测试数据：

{
    "IAP_ID":
    {
      "description":"One year Subscription",
      "title":"My Subscription",
      "itemType":"SUBSCRIPTION",
      "price":20.00,
      "subscriptionParent":"org.company.appid"
    }
}

我有一个 class 的框架来测试系统是否正常工作：

public class AmazonIAPController : Java.Lang.Object, IPurchasingListener
{
    const string ProductId = "IAP_ID";
    private Activity uiActivity;

    public AmazonIAPController()
    {
    }

    public void SetupIAP(Activity activity) {
        uiActivity = activity;
        PurchasingService.RegisterListener(uiActivity, this);

        // test that the Amazon system works
        PurchasingService.Purchase(ProductId);
    }

    public void OnResume(Activity activity) {
        uiActivity = activity;
        PurchasingService.RegisterListener(uiActivity, this);

        //PurchasingService.UserData;
        PurchasingService.GetPurchaseUpdates(false);
        PurchasingService.GetProductData(new string[] { ProductId });

    }

    public void OnProductDataResponse(ProductDataResponse response) {
        var status = response.GetRequestStatus();

        Debug.WriteLine("*****OnProductDataResponse");
    }

    public void OnPurchaseResponse(PurchaseResponse response) {
        var status = response.GetRequestStatus();
        Debug.WriteLine("*****OnPurchaseResponse");
    }

    public void OnPurchaseUpdatesResponse(PurchaseUpdatesResponse response) {
        var status = response.GetRequestStatus();
        Debug.WriteLine("*****OnPurchaseUpdatesResponse");
    }

    public void OnUserDataResponse(UserDataResponse response) {
        var status = response.GetRequestStatus();
        Debug.WriteLine("*****OnUserDataResponse");
    }
}

测试运行

我正在尝试运行在我的第 5 代 Kindle Fire 上执行此操作。当应用程序启动时，用户会按预期收到 Amazon IAP 提示。如果执行了购买，它就会完成并且交易会正确显示在 Amazon App Tester 应用程序中。

问题

我在回调方法中设置了断点。这些断点永远不会被触发。 Debug.WriteLine 调用也不会出现在应用程序输出中。看来我的回调方法没有被调用。

Answer 1

问题的根源是 Android 清单条目与 Xamarin 生成具有代码属性的清单条目的方式冲突。

为了解决这个问题，我从清单中删除了上述条目，并在 Java 绑定项目中创建了一个附加文件，其中包含 ResponseReciever 的部分 class 和相关的清单属性如下：

using System;
using Android.App;
using Android.Content;

namespace Com.Amazon.Device.Iap
{
    [BroadcastReceiver(Name = "com.amazon.device.iap.ResponseReceiver")]
    [IntentFilter(new[] { "com.amazon.inapp.purchasing.NOTIFY" })]
    public partial class ResponseReceiver
    {

    }
}

此后，清单条目已正确生成，预期的回调开始工作。

注：

您可能会注意到清单 XML 中的 android:permission 条目不在上述属性中。我找不到参考资料，但我记得在某个地方看到过，不仅不需要这个条目来让 SDK 工作，而且根据 the official Android documentation，它实际上不是 action 上的有效属性。

Amazon IAP 不调用监听器回调（Kindle Fire、Xamarin）

Amazon IAP not calling listener call backs (Kindle Fire, Xamarin)

android

xamarin.android

amazon-appstore

kindle-fire

xamarin

设置

测试运行

问题

注：