Asking the user to review the app after a certain number of launches

Question

I'd like to ask the user to review the app after a certain number of launches. But for a reason I don't understand, the "StoreKit review pop-up" isn't shown. The if let scene = code is however correct because in a button it works well.

import SwiftUI
import StoreKit

@main
struct ExampleApp: App {
    @AppStorage("launchNumber") var launchNumber: Int = 0

    var body: some Scene {
        WindowGroup {
            ContentView()
                .onAppear { review() }
        }
    }

    func review() {
        launchNumber += 1
        // print(launchNumber)
        guard launchNumber == 2 else { return }
        if let scene = UIApplication.shared.connectedScenes.first(where: { $0.activationState == .foregroundActive }) as? UIWindowScene {
            SKStoreReviewController.requestReview(in: scene)
        }
    }
}

Do you know why it's not shown when launchNumber == 2?

Answer 1

Use .task instead, onAppear is known for having issues presenting other Views without a delay.

var body: some Scene {
    WindowGroup {
        ContentView()
            .task { review() }
    }
}

If you absolutely have to use onAppear you can set a delay.

var body: some Scene {
    WindowGroup {
        ContentView()
            .onAppear { 
                 DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
                    review() 
                 }
             }
    }
}