Скачать или смотреть How to Get iOS Transaction ID from In-App Purchases in Flutter (StoreKit + in_app_purchase)

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In this video, I’ll show you the complete process to get the iOS transaction ID when a user completes an in-app purchase in a Flutter app using the in_app_purchase and in_app_purchase_storekit packages. We start by adding the required dependencies that enable in-app purchases and StoreKit support on iOS. Then, we enable StoreKit by registering the platform with InAppPurchaseStoreKitPlatform.registerPlatform(). Next, we query product details using InAppPurchase.instance.queryProductDetails() to load subscription products from App Store Connect. We also listen to the purchase stream via InAppPurchase.instance.purchaseStream to handle real-time purchase updates. When a purchase is successful, we specifically check if the purchase is of type AppStorePurchaseDetails and extract the transaction ID using purchase.skPaymentTransaction.transactionIdentifier. This transaction ID can then be sent to your backend for logging or verification purposes, instead of sending the full receipt. This approach works seamlessly for both non-consumable and subscription purchases in sandbox and production environments.

Flutter In-App Subscription Example (Buy Using Product ID)
Download: https://drive.google.com/file/d/1zOfI...
This file helps you initiate a subscription purchase in Flutter using only the product ID (e.g., com.app.monthly).

It includes:
✅ Querying product details using InAppPurchase
✅ Starting the purchase flow
✅ Listening to purchase updates
✅ Extracting the transaction ID (iOS) or purchase token (Android)
✅ Completing pending transactions
💡 Required Packages:

in_app_purchase: ^3.1.6
in_app_purchase_storekit: ^0.3.21 // Only for iOS
📦 Make sure your product is live and available in App Store / Play Console.📲 iOS users: Don’t forget to register StoreKit using:
dart
InAppPurchaseStoreKitPlatform.registerPlatform();