Handling In-App Purchase Subscription Status Updates in Android Using Billing Library v5
I'm currently working on an Android application that implements in-app purchases using the Google Play Billing Library (version 5). I've set up the basic subscription flow and can successfully purchase a subscription, but I'm running into issues when it comes to handling subscription status updates. Specifically, I need to know how to properly implement the `PurchasesUpdatedListener` to handle changes in the subscription status, like cancellations or renewals. I've set up my listener as follows: ```kotlin class MyBillingListener : PurchasesUpdatedListener { override fun onPurchasesUpdated(billingResult: BillingResult, purchases: List<Purchase>?) { if (billingResult.responseCode == BillingClient.SkuType.SUBS) { purchases?.forEach { purchase -> handlePurchase(purchase) } } else { Log.e(TAG, "Purchase failed: ${billingResult.debugMessage}") } } } ``` In my `handlePurchase` method, I'm updating the UI based on the subscription status: ```kotlin private fun handlePurchase(purchase: Purchase) { when (purchase.status) { PurchaseStatus.Purchased -> { // Grant entitlement updateUIForActiveSubscription() } PurchaseStatus.Canceled -> { // Update UI for canceled subscription updateUIForCanceledSubscription() } PurchaseStatus.Expired -> { // Handle expired subscription updateUIForExpiredSubscription() } } } ``` The main scenario I'm working with is that when a subscription is renewed or canceled, the `onPurchasesUpdated` method is sometimes not triggered. I've ensured that I've set up the listener in the `onCreate` method of my activity, and I call `startConnection` on my `BillingClient`. However, I sometimes receive no updates after the initial purchase, leading to incorrect UI states. I've verified my connection to the billing client and confirmed that my app is properly set up in the Google Play Console for handling subscriptions. I've also checked my logs and noticed that when a subscription is canceled via the Play Store, the `onPurchasesUpdated` method doesn't get called, and I only see the behavior message: 'BillingClient: Unable to consume the purchase.' Has anyone experienced similar issues with the Billing Library and knows how to ensure that subscription status updates are reliably handled? Any insights on best practices or debugging steps would be greatly appreciated! For context: I'm using Kotlin on Windows. Any ideas what could be causing this?