How to check if iOS application uses 'StoreKit.framework'?

Question

I write SDK for iOS and I want to validate if StoreKit.framework is linked to application that uses my SDK, so I run:

if ([SKStoreProductViewController class]) {
        SKStoreProductViewController *storeController =
                        [[ SKStoreProductViewController alloc ] init ];
        // ...
    }

However even if StoreKit.framework is not linked [SKStoreProductViewController class still returns true.

How to solve this problem?

---

Edit 1

as @x4h1d pointed I created new empty project and added to default Controller:

BOOL isStoreKitAvailable = 
   (NSClassFromString(@"SKStoreProductViewController") != nil);

// => YES (there is no linked frameworks at all, why I get YES?)

---

Edit 2

My Provisioning profile has In-App Purchase enabled (not a project itself)

from iOS App IDs:

However from Xcode:

Maybe this is a reason why even empty application has build-in StoreKit?

Answer 1

You can check the storekit availibility using following code.

func checkStoreKitAvailibility() -> Bool {
    for bundle in Bundle.allFrameworks {
        if ((bundle.classNamed("SKStoreProductViewController")) != nil) {
            return true;
        }
    }
    return false;
}

Edit: For Objective-C you can use:

- (BOOL)checkStoreKitAvailibility {

    for (NSBundle *bundle in NSBundle.allFrameworks) {
        if ([bundle classNamed:@"SKStoreProductViewController"]) {
            return YES;
        }
    }
    return NO;
}