Android letting me purchase a non-consumable product more than 1 time

Development Platform & Builds Mobile
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4

I fixed this finally. Problem lies within the engine itself. According to Google, all purchases need to be “acknowledged” after the successful purchase event. I checked the GooglePlayStoreHelper.java file at Engine → Plugins → Online → Android → OnlineSubsytemGooglePlay → Source → Java → BillingApiV2 → com → EpicGames → ue4 → GooglePlayStoreHelper.java.

Check the OnPurchaseResult method. There is no code for acknowledgement. In fact without acknowledgement, Google play will refund the purchase within a week. So make sure you add this code before the line that says…

nativePurchaseComplete(BillingClient.BillingResponseCode.OK, sku, f_purchase.getPurchaseToken(), receipt, f_purchase.getSignature());

This is the line that says purchase is a success. It makes sense to acknowledge the purchase before this line.

Add these lines.

//Ashy Custom Code
AcknowledgePurchaseParams acknowledgePurchaseParams = AcknowledgePurchaseParams.newBuilder().setPurchaseToken(f_purchase.getPurchaseToken()).build();

  				AcknowledgePurchaseResponseListener acknowledgePurchaseResponseListener = new AcknowledgePurchaseResponseListener() {
  				@Override
  					public void onAcknowledgePurchaseResponse(BillingResult billingResult) {             
  						//getMessage("Purchase acknowledged");               
  					}
  				};

  				mBillingClient.acknowledgePurchase(acknowledgePurchaseParams,acknowledgePurchaseResponseListener);

//End of Ashy Custom Code

Purchase is acknowledged and Google is showing an error saying you already own this item when i attempt the purchase again.

I hope Epic fixes this soon. Purchases getting refunded after a week could spell disaster for some people.

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