How to store and fetch the response of in-app purchase in ios?

Question

I have implemented in-app purchase in my project. The implementation worked well but I have a problem to store a response.

I unlocked the button and when I go through in

Answer 1

You need to implement it like.

When the purchase is successful set a bool in NSUserDefaults like:

[[NSUserDefaults standardUserDefaults] setBool:YES ForKey:@"isPurchased"];

In the viewDidLoad of the class, write like:

if([[NSUserDefaults standardUserDefaults] boolForKey:@"isPurchased"])
{
   //Enable/show the button
}
else
{
   //disable/hide button
}

This is a nice tutorial, please refer it also