Flutter in_app_purchase: ^3.1.4 issue on release production - flutter

Question

hello i am using in_app_purchase: ^3.1.4 official flutter plugin for purchasing item in my app its non_consumable product user can buy it only one time. i have test this app on internal testing.On internal testing it was working fine but issue was its not working production release anyone know what issue here is my code below please check now
final Set<String> _productIds = {'urdubible'};
late List<ProductDetails> _products;
bool _isPurchased = false;
#override
void initState() {
super.initState();
_checkPurchaseStatus();
// initialize the in-app purchase plugin
InAppPurchase .instance.purchaseStream
.listen((List<PurchaseDetails> purchases) {
// handle any purchase updates
_handlePurchaseUpdates(purchases);
});
// load the available products
_loadProducts();
}
Future<void> _loadProducts() async {
// get the product details from the store
ProductDetailsResponse response =
await InAppPurchase.instance.queryProductDetails(_productIds);
// save the product details to state
setState(() {
_products = response.productDetails;
});
}
void _handlePurchaseUpdates(List<PurchaseDetails> purchases) {
for (PurchaseDetails purchase in purchases) {
switch (purchase.status) {
case PurchaseStatus.purchased:
_savePurchaseStatus(true);
// handle the purchase, e.g. update UI, save the purchase to database, etc.
setState(() {
_isPurchased = true;
});
break;
case PurchaseStatus.error:
// handle any purchase errors
break;
case PurchaseStatus.canceled:
// handle cancelled purchases
break;
}
}
}
Future<void> _purchaseProduct() async {
if (_products.isNotEmpty) {
// initiate the purchase flow
final PurchaseParam purchaseParam =
PurchaseParam(productDetails: _products.first);
InAppPurchase.instance.buyNonConsumable(purchaseParam: purchaseParam);
}
}
Future<void> _savePurchaseStatus(bool isPurchased) async {
SharedPreferences prefs = await SharedPreferences.getInstance();
prefs.setBool('isPurchased', isPurchased);
}
Future<void> _checkPurchaseStatus() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
bool? isPurchased = prefs.getBool('isPurchased');
if (isPurchased != null && isPurchased) {
setState(() {
_isPurchased = true;
});
}
}

Answer 1

in my case I am facing issue with
buildTypes {
release {
signingConfig signingConfigs.debug
minifyEnabled false
shrinkResources false
useProguard false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
After disabling shrink resources it's working for me