如何验证应用程序内购买交易本身成功的Windows Phone 8

Question

我有我的应用程序内购买该代码

string receipt = await Store.CurrentApp.RequestProductPurchaseAsync(pID, false); 

的文档指出此方法成功返回值，即使：

there's no network connection available 
the user cancels out of the dialog 
the user's authentication fails 

You should treat a success result as indicating the async process completed without  
errors. To ensure that the transaction itself was successful, check the 
LicenseInformation element in the returned receipt. 

在解锁购买功能之前，是否有快速验证特定物品收据的实际成功？目前如果没有错误，该功能将永远解锁，因为收据未经验证。

我的代码：

private async void inAppPurchase(string key) 
    { 

     if (!Store.CurrentApp.LicenseInformation.ProductLicenses[key].IsActive) 
     { 
      try 
      { 
       // The customer doesn't own this feature, so 
       // show the purchase dialog. 
       MockIAPLib.ListingInformation li = await Store.CurrentApp.LoadListingInformationAsync(); 
       string pID = li.ProductListings[key].ProductId; 

       //purchase successful 
       string receipt = await Store.CurrentApp.RequestProductPurchaseAsync(pID, false); 

       //Check the receipt for 

       switch (key) 
       { 
        case "IsAdsVisibleSetting": 
         settings.IsAdsVisibleSetting = false; 
         break; 
        case "style_2": 
         fontFolder[key] = true; 
         settings.AllowedFontSetting = fontFolder; 
         break; 
        case "backgrounds_2": 
         backgroundGroups[key] = true;       
         settings.AllowedBackgroundGroupsSetting = backgroundGroups; 
         break; 
        case "backgrounds_3": 
         backgroundGroups[key] = true; 
         settings.AllowedBackgroundGroupsSetting = backgroundGroups; 
         break; 
       } 

       RenderStoreItems(); 
      } 
      catch (Exception) 
      { 
       MessageBox.Show("Sorry, the in-app purchase was not completed because an error occurred.", "Purchasing Error", MessageBoxButton.OK); 
      } 
     } 
    } 

Answer 1

购买方法调用后，一定要检查许可证是否活动面前完全缩绒货。如果是消费类型，请调用ReportProductFulfillment（）方法。

CurrentApp.LicenseInformation.ProductLicenses[key].IsActive 

顺便说一句，在您的代码中includeReceipt值设置为false - 将始终将'receipt'保留为空。