Solved "PurchaseResponse.RequestStatus.FAILED", While amazon IAP Live test environment

현재 근무하고 있는 회사에서 아마존 결제 라이브러리를 활용해 유니티플러그인을 개발 중입니다

아마존에서 제공하는 IAP 결제 라이브러리를 내부에서 개발한 라이브러리와 결합해서 AAR Format의 통합 라이브러리를 만들었습니다

실제 개발을 완료하고 Test하는 과정에서 기이한 현상이있어 기록으로 남깁니다

아마존 IAP Test 환경 같은 경우에는 크게 3가지 단계로 Test할수있습니다

1. Sandbox test
2. Live app testing(LAT)
3. 배포

https://developer.amazon.com/docs/in-app-purchasing/iap-testing-overview.html

Sendbox Test 환경에서는 문제없이 잘 작동했는데요, 같은 버전으로 2(LAT) Test 환경에서 결제를 시도하니 계속하여 “PurchaseResponse.RequestStatus.FAILED” Error

case가 발생하면서 결제가 정상적으로 작동하지 않았어요

https://developer.amazon.com/docs/in-app-purchasing/iap-implement-iap.html#responseobjects

문서를 확인해보니 다음과 같은 제약사항이 있었고

Note: R8 is now compatible with IAP, so you no longer need to disable R8. IAP is compatible with Android Gradle plugin version 3.6.0 or higher. Follow the steps below to use IAP with R8.

• https://developer.amazon.com/docs/in-app-purchasing/iap-obfuscate-the-code.html

실제 IAP 라이브러리를 포함해 통합 라이브러리를 만드는 안드로이드 프로젝트에서 pro guard를 및 R8 옵션을 disable 하니 정상적으로 동작하였어요!

아래는 안드로이드 스튜디오에서 R8 및 proguard를 disable한 부분입니다.

AAR Libary project build gradle

buildTypes {
			release {
				**minifyEnabled false**
				proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
			}
		}

gradle.propertys

	android.enableR8=false

Currently I am making a billing library for apps to release on Amazon App store as AAR Format with integrated with Amazon IAP library in company. After finished integrated work , while I was testing my library , I found weird situation and share how can I fixed the problem

Actually there are three ways to test an Amazon IAP Test

1. Sandbox test
2. Live app testing(LAT)
3. Release

https://developer.amazon.com/docs/in-app-purchasing/iap-testing-overview.html

Actually everything is fine with first Sandbox Test environment but during the second stage , every-times tried to purchase it failed with below log

“PurchaseResponse.RequestStatus.FAILED”

https://developer.amazon.com/docs/in-app-purchasing/iap-implement-iap.html#responseobjects

After checked the official document there were a requirement

Note: R8 is now compatible with IAP, so you no longer need to disable R8. IAP is compatible with Android Gradle plugin version 3.6.0 or higher. Follow the steps below to use IAP with R8.

https://developer.amazon.com/docs/in-app-purchasing/iap-obfuscate-the-code.html

In the Android studio that makes the integrated library including the actual IAP Library, I disabled proguard and R8 option Finally !! It worked well :)

Below is the part where R8 and proguard are disabled in Android Studio.

AAR Library project build gradle

buildTypes {
release {
**minifyEnabled false**
proguardFiles getDefaultProguardFile(‘proguard-android.txt’), ‘proguard-rules.pro’
}
}

gradle.propertys

android.enableR8=false