Use case

The IAP iOS StoreKit wrapper wraps almost all native calls, but support for the SKPaymentQueueDelegate and showPriceConsentIfNeeded are missing. With showPriceConsentIfNeeded a developer can notify their users about a price change at a moment that is convenient. More about this can be found here).

Proposal

My proposal is to:

• Allow developers to register a Dart implementation of the SKPaymentQueueDelegateWrapper with the current SKPaymentQueueWrapper class (this requires a new SKPaymentQueueWrapper.setDelegate(SKPaymentQueueDelegateWrapper) method);
• Add a new showPriceConsentIfNeeded() method to the SKPaymentQueueWrapper class which binds to the native iOS counterpart.