我在我的 Flutter 应用中使用 in_app_purchase: ^1.0.1
来实现订阅的应用内购买。我已经成功地购买了一次订阅,但是当我尝试使用 restorePurchases()
来获取用户已经购买的订阅时,我得到的列表每次都会增加长度。似乎不可能重复购买同一产品。
这是我的代码。
_processIAP() async {
Stream purchaseUpdated = InAppPurchase.instance.purchaseStream;
_subscription = purchaseUpdated.listen((purchaseDetailsList) {
print("purchaseDetailsList.length = " + purchaseDetailsList.length.toString());
purchaseDetailsList.forEach((PurchaseDetails purchaseDetails) async {
print(purchaseDetails.purchaseID + " " + purchaseDetails.pendingCompletePurchase.toString());
if (purchaseDetails.status == PurchaseStatus.pending) {
print("Purchase is still pending!");
} else {
if (purchaseDetails.status == PurchaseStatus.error) {
print("An error has occurred!");
} else if (purchaseDetails.status == PurchaseStatus.purchased || purchaseDetails.status == PurchaseStatus.restored) {
print("Purchased or restored successfully!");
await InAppPurchase.instance.completePurchase(purchaseDetails);
print("Purchase marked as completed");
}
if (purchaseDetails.pendingCompletePurchase) {
await InAppPurchase.instance.completePurchase(purchaseDetails);
print("Purchase marked as completed");
}
}
});
}, onDone: () {
print("DONE!");
_subscription.cancel();
}, onError: (error) {
print(error);
});
const Set<String> _kIds = <String>{'basic_monthly_apple'};
final ProductDetailsResponse response = await InAppPurchase.instance.queryProductDetails(_kIds);
if (response.notFoundIDs.isNotEmpty) {
print("Some product IDs not found!");
}
print("Restoring previous purchases!");
await InAppPurchase.instance.restorePurchases();
//PurchaseParam purchaseParam = PurchaseParam(productDetails: products[0]);
// InAppPurchase.instance.buyNonConsumable(purchaseParam: purchaseParam);
}
在日志中,每次我尝试在使用 purchaseDetailsList
方法后购买订阅时,restorePurchases()
的长度都会增加(增加 1)。每个 purchaseDetail
都有一个唯一的 purchaseID
。此外,所有 pendingCompletePurchase
的 purchaseDetails
始终为 true
,即使它们已被标记为已完成。
日志 -
Some product IDs not found!
flutter: Restoring previous purchases!
flutter: purchaseDetailsList.length = 6
flutter: 1000000819394740 true
flutter: Purchased or restored successfully!
flutter: 1000000819394741 true
flutter: Purchased or restored successfully!
flutter: 1000000819394742 true
flutter: Purchased or restored successfully!
flutter: 1000000819394743 true
flutter: Purchased or restored successfully!
flutter: 1000000819394744 true
flutter: Purchased or restored successfully!
flutter: 1000000819394745 true
flutter: Purchased or restored successfully!
flutter: Purchase marked as completed
flutter: Purchase marked as completed
flutter: Purchase marked as completed
flutter: Purchase marked as completed
flutter: Purchase marked as completed
flutter: Purchase marked as completed
每次我重新启动应用程序并重试时,长度 6 都会不断增加。此外,我不能与 buyNonConsumable
一起执行 restorePurchases
。它会导致一个错误,指示需要标记为已完成的待处理事务。
非常感谢任何帮助。