blmiles
commented
3 years ago OK, so it looks like using Promotional Offers on an IAP to achieve a trial period is NOT the way to do things.
I added an Introductory Offer on each of the IAPs with a two-week free period. Testing shows the info in the PurchaseToken "IsTrialPeriod" = true. Also, the app-store popup on the device shows it's a trial period and the date on which the first charge applies.
For my purposes, that'll suffice.
Hope this helps someone albeit not directly plugin related but trying to catch all the loose ends dealing with this and the variations in the app stores is quite the challenge.
Thank you
Hello,
As expected, handling IAP Promotional Offers in the App Store is problematic.
To enable a "Trial Period" in the App, one needs to add a Promotional Offer to any IAP, as you know. I have two approved IAPs in the App Store and a Promotional Offer on each, app is approved for release too.
Purchasing an IAP, I pass in the IAP productId, the purchase completes with no issues. However, when I pass in the IAP-Promotional-Offer productId, I get an unknown error in the InAppBilling plugin.
Bug Information
Version Number of Plugin: Beta 4.0.1 Device Tested On: iPad Mini 5th Gen Simulator Tested On: Version of VS: 16.8.2 Version of Xamarin: Xamarin Forms - 4.8.0.1560 Versions of other things you are using:
Steps to reproduce the Behavior
Add a Promotional Offer to an IAP in the APP Store and try to use that Promotional Offer productID and NOT the IAP productID
Expected Behavior
Complete the purchase of the IAP Promotional Offer, get a "purchase" object returned with all the correct trial-period information properly set in the PurchaseToken.
Actual Behavior
This is the error I get in VS: {Plugin.InAppBilling.InAppBillingPurchaseException: An unknown error occurred at Plugin.InAppBilling.InAppBillingImplementation.PurchaseAsync (System.String productId, Plugin.InAppBilling.ItemType itemType, Plugin.InAppBilling.IInAppBillingVerifyPurchase verifyPurchase) [0x0002b] in D:\a\1\s\src\Plugin.InAppBilling\InAppBilling.apple.cs:168 at mycompany.Services.BillingService.Subscribe (System.String productId) [0x000f3] in D:\Projects\Solutions\mycompany\mycompany.Shared\Services\BillingService.cs:41 }
Code snippet
var purchase = await billing.PurchaseAsync(productId, ItemType.Subscription, verify);
Screenshotst
Can someone please offer advice on this? Do we "purchase" IAP Promotional Offers in the same way as IAPs? Am I missing a step?
Thanks