[Android] Migrated app to MAUI - GetPurchasesAsync returns no results

[garnelsoftware]

Firstly, thank you so much for this plugin - it has been vital for me since first installing it 3 years ago. However, since MAUI migration it's failing to work as expected.

My MAUI app, migrated from Xamarin, cannot restore purchases - GetPurchasesAsync is returning no results. If instead you choose to Purchase, it finds that the item is already owned.

Version Number of Plugin: 7.1.0 Device Tested On: Android (Samsung S21) Simulator Tested On: N/A Version of Rider: 2023.3

Start the app, press the button to restore purchases.

The existing purchase should be found BUT instead the app reports that there are no purchases found and thus will fail to restore (no results are returned from the GetPurchasesAsync call).

If you choose to make a purchase the app reports that the item is already owned and then the app recognises that the purchase has been made and effectively restores it.

[sheharyarshahid]

For me GetPurchasesAsync doesn't works for iOS. It returns nothings not even throw any exception and keeps on running.

[electro-logic]

Hello James, I have the same issue with MAUI 8.0.71 and InAppBillingPlugin 8.0.2 beta , GetPurchasesAsync is not returning on iOS

[sheharyarshahid]

My workaround was instead of calling GetPurchasesAsync function, I directly call PurchaseAsync (iOS only) and it would work fine. If user is already subscribed, it will return purchase token of that specific purchase. Otherwise it will start new purchase

[electro-logic]

Ok guys, I found the issue and I have a fix for the .net 8 branch.

In InAppBilling.ios.cs in the RestoreAsync() method (line 247) there is

return tcsTransaction.Task

change it with

var result = await tcsTransaction.Task;
return result;

to avoid issue with the finally statement that unsubscribe the handler. From my preliminary testing, with this patch everything works fine on the iPhone.

https://github.com/jamesmontemagno/InAppBillingPlugin/pull/621/files

This fix is related to many issues, not only #612

[jamesmontemagno]

I am not sure how that would fix anything as it would be doing the same thing....

[jamesmontemagno]

@electro-logic will push out 8.0.3, but that isn't related to this at all as they are saying it is android

[electro-logic]

Hello James, yes my reply was to sheharyarshahid that was mentioning iOS as not working.