inApp purchase in an iPad/iPhone App

Question

I have an App that allows for an inApp purchase. Works great, except if a user purchases it from the App Store (not from within my app), and then goes into my App, it does not know it was purchased. How can I tell if it was purchased already?

My App is live but I have this newly discovered bug so hopefully someone can answer this for me soon!! -:)

Thanks for the help!

Answer 1

You could use the restoreCompletedTransactions of the SKPaymentQueue Class to lookup which items the user already purchased and take further actions to deliver the items/functions to your user. The documentation is your friend ;-) http://developer.apple.com/library/ios/#documentation/StoreKit/Reference/SKPaymentQueue_Class/Reference/Reference.html%23//apple_ref/doc/uid/TP40008257