purchasing consumable item using flutter_inapp_purchase? - flutter

Question

I am trying to make an in app purchase function,
and I faced this error: "you already own this item".
I found out that this is because the store considers the item as non-consumable item.
Unlike in_app_purchase package, this package doesn't support buyConsumable and buyNonConsumable functions.
so how to execute purchasing consumable item using that package?
also I assume that this is because of what's said above
items that are purchased keep being refunded automatically.
anyway my code is based on their example code but there it is:
storeController.dart
late StreamSubscription purchaseUpdatedSubscription;
late StreamSubscription purchaseErrorSubscription;
late StreamSubscription connectionSubscription;
// just followed the example
final List<String> productLists = Platform.isAndroid
? [
'point1',
'point2',
'point3',
]
: [
'point1',
'point2',
'point3'
];
String platformVersion = Platform.operatingSystem;
RxList<IAPItem> itemsList = <IAPItem>[].obs;
RxList<PurchasedItem> purchasesList = <PurchasedItem>[].obs;
#override
void onInit() async {
init();
await initPlatformState();
await getProduct();
await getPurchaseHistory();
}
Future<void> initPlatformState() async {
// Platform messages may fail, so we use a try/catch PlatformException.
// prepare
var result = await FlutterInappPurchase.instance.initialize();
print('result: $result');
// refresh items for android
try {
String msg = await FlutterInappPurchase.instance.consumeAll();
print('consumeAllItems: $msg');
} catch (err) {
print('consumeAllItems error: $err');
}
connectionSubscription =
FlutterInappPurchase.connectionUpdated.listen((connected) async {
print('connected: $connected');
});
purchaseUpdatedSubscription =
FlutterInappPurchase.purchaseUpdated.listen((productItem) async {
print('purchase-updated: $productItem');
await getPurchaseHistory();
});
purchaseErrorSubscription =
FlutterInappPurchase.purchaseError.listen((purchaseError)async {
print('purchase-error: $purchaseError');
});
}
Future getProduct() async {
List<IAPItem> items =
await FlutterInappPurchase.instance.getProducts(productLists);
for (var item in items) {
print('${item.toString()}');
itemsList.add(item);
}
}
Future getPurchaseHistory() async {
List<PurchasedItem>? items =
await FlutterInappPurchase.instance.getPurchaseHistory();
for (var item in items!) {
print('${item.toString()}');
purchasesList.add(item);
}
}
and the productListWidget:
Widget productList(context) {
return GridView.builder(
shrinkWrap: true,
itemCount: controller.itemsList.length,
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2,
mainAxisSpacing: 10,
crossAxisSpacing: 10,
mainAxisExtent: Get.width * 0.4 + 70,
),
itemBuilder: (BuildContext context, int index) {
final item = controller.itemsList[index];
return
Container(
width: Get.width * 0.5,
alignment: Alignment.center,
color: Colors.transparent,
margin: const EdgeInsets.fromLTRB(10,0,10,0),
child: Stack(
children: [
Container(
color: const Color(0xff353535),
child: Column(
children: [
const SizedBox(height: 10),
const Text('Name', style: TextStyle(color: Colors.white)),
Text(
item.title ?? '',
style: const TextStyle(
color: Colors.white,
fontSize: 15,
fontWeight: FontWeight.w600,
fontStyle: FontStyle.normal,
),
textAlign: TextAlign.center,
),
const SizedBox(height: 10),
const Text('Desc', style: TextStyle(color: Colors.white)),
Text(
item.description ?? '',
style: const TextStyle(
color: Colors.grey,
fontSize: 13,
fontStyle: FontStyle.normal,
),
textAlign: TextAlign.center,
),
const SizedBox(height: 10),
const Text('Price', style: TextStyle(color: Colors.white)),
Text(
'${item.currency ?? ''} ${item.originalPrice}',
style: const TextStyle(
color: Colors.white,
fontSize: 12,
fontStyle: FontStyle.normal,
overflow: TextOverflow.ellipsis
)
),
const SizedBox(height: 10),
GestureDetector(
onTap: () async {
controller.requestPurchase(item);
},
child: Container(
alignment: Alignment.center,
width: 100,
height: 30,
color: const Color(0xffE1FD2E),
child: const Text('Purchase')
)
)
]
),
),
]
)
);
}
);
}