iOS Question Is there any event that fires when the App Store (or TestFlight) popup appears in response to a payment request?


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When I issue a store.RequestPayment(ProductID), the App Store (or TestFlight) triggers a popup on the screen to make the purchase. Is there any way to detect when it appears? I want to fill the time delay with a "connecting to store ..." message that disappears once the popup appears, but I can't see a way to detect that moment.