What is the Billing Library Version used by Unreal for Android In-App Purchases?

Development Platform & Builds Mobile
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1

We’ve been preparing an application for Unreal that will use In-App Purchases and subscriptions. We see that in August 2021, Google Play will be phasing out all updates to apps using versions previous to Billing Library v3:

Starting August 2, 2021, all new apps must use Billing Library version 3 or newer. By November 1, 2021, all updates to existing apps must use Billing Library version 3 or newer.

Once August 2 rolls around, does Unreal plan to have a Version 3 update for the relevant Google Play in-app purchase nodes? The specific nodes I’m referring to can be found in the following documentation:

EDIT - As a follow-up question: I noticed a separate forum post that implied 4.26 may already be using Billing Library 4.26. Is this accurate?

2

Yes, you can check that it is supported by accessing the following path local or in the Git source code at:

\Engine\Plugins\Online\Android\OnlineSubsystemGooglePlay\Source\OnlineSubsystemGooglePlay_UPL.xml

Comparing the file between 4.25 and 4.26, 4.25 has billing:2.0.3, while 4.26 has billing:3.0.0, which means that the Billing Library Version 3 is already supported.

In fact, apps created with the previous version showed a warning about the Billing Library on the Google Play Console, but when I uploaded a test release of an app created with 4.26, the warning did not appear
(However, we are not able to publish it yet)

3

I’m also using ue4.25 and I’m also getting the same warning of Google billing system . So what I need to do upgrade to ue4.26 or need to change settings in SDK or ndk

4

Hi, we’re using UE4.26 but I’m still getting the error message in the Play Console. I also tried a build with 4.27, but still the same. Is there any other requirement that must be met or any setting I’d need to change?

Any hints very much appreciated.

5

It seems you have to activate the GooglePlay support even if you don’t use any purchases inside your app.

We updated the following settings and now it works:

[OnlineSubsystem]
DefaultPlatformService=GooglePlay
 
[/Script/AndroidRuntimeSettings.AndroidRuntimeSettings]
bEnableGooglePlaySupport=True
 
[OnlineSubsystemGooglePlay.Store]
bUseGooglePlayBillingApiV2=True
6

Which file I have to update this?

1 Like
7

Itd also like to know where?

Seems like a nice fix