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Version: 7.1 (Current)

Available Purchases

Source Code: available_purchases_screen.dart

This example demonstrates how to retrieve and display user's available purchases and purchase history.

Key Features​

  • Retrieve active purchases
  • Include expired subscriptions (iOS)
  • Display purchase details
  • Restore purchases
  • Handle purchase validation

Implementation Overview​

1. Get Active Purchases​

final purchases = await iap.getAvailablePurchases(
  onlyIncludeActiveItemsIOS: true,
);

2. Get All Purchases (Including Expired)​

final allPurchases = await iap.getAvailablePurchases(
  onlyIncludeActiveItemsIOS: false,
  alsoPublishToEventListenerIOS: false,
);

3. Display Purchase Information​

for (final purchase in purchases) {
  debugPrint('Product ID: ${purchase.productId}');
  debugPrint('Transaction ID: ${purchase.transactionIdFor}');
  debugPrint('Purchase Date: ${purchase.transactionDate}');
  debugPrint('Purchase Token: ${purchase.purchaseToken}');
}

4. Restore Purchases​

Future<void> restorePurchases() async {
  final restored = await iap.getAvailablePurchases();

  // Verify purchases on server
  for (final purchase in restored) {
    await verifyPurchaseOnServer(purchase.purchaseToken);
  }

  // Grant access to purchased content
  await updateUserAccess(restored);
}

Platform Differences​

iOS​

  • Use onlyIncludeActiveItemsIOS: true to filter expired subscriptions
  • Use onlyIncludeActiveItemsIOS: false to include purchase history
  • alsoPublishToEventListenerIOS publishes purchases to the event stream

Android​

  • Returns all verified purchases from Google Play
  • Includes purchase tokens for server-side verification
  • No separate purchase history API

Best Practices​

  1. Verify purchases on your backend - Don't trust client-side purchase data alone
  2. Handle restore gracefully - Show clear feedback during restore process
  3. Check purchase state - Validate purchase state before granting access
  4. Support offline mode - Cache validated purchases locally
  5. Handle edge cases - Account for refunds, cancellations, and billing retries