how to check subscribed on first View about storehelper

[russell-archer]

Yes, you can't things the way you're attempting it. I would suggest having storeHelper.start() in your @main App struct and then have checks for products being purchased or subscribed in the first view that's displayed.

For example, see SimplePurchaseView() in StoreHelperDemo (https://github.com/russell-archer/StoreHelperDemo). That view could be called directly from your App struct. SimplePurchaseView() shows how to check for a non-consumable product purchase but the same thing would work for a subscription. Something like this:

@main struct YourApp: App {
    @StateObject var storeHelper = StoreHelper()
    
    var body: some Scene {
        WindowGroup {
            YourFirstView().environmentObject(storeHelper)
                .task { storeHelper.start() }
        }
    }
}

struct YourFirstView: View {
    @EnvironmentObject var storeHelper: StoreHelper
    @State var purchaseState: PurchaseState = .unknown
    let productId = "com.rarcher.nonconsumable.flowers.large"
    
    var body: some View {
        VStack {
            // Product details here...
            
            if purchaseState == .purchased {
                Text("This product has already been purchased").multilineTextAlignment(.center)
            } else {
                Text("This product is available for purchase").multilineTextAlignment(.center)
            }
            
            Spacer()
        }
        .padding()
        .task {
            let purchased = (try? await storeHelper.isPurchased(productId: productId)) ?? false
            purchaseState = purchased ? .purchased : .unknown
        }
    }
}