How to get the Entitlement name from a Package?

@kaitlin I found the answer. Hopefully this helps other people.

When you want to get a specific offering, you need to use the productID that you are looking for. For example if I had 2 productIDs in the AppStore named powers_599_1w_1w0 and energy_999_1m, I would use those for comparison against package.storeProduct.productIdentifier.

In short, for revenueCat’s iOS Package type, has a storeProduct property, and storeProduct has a productIdentifier property that equates to whichever productID you’re looking for. The below code is tested and 100% works.

func presentPurchase(for productID: String) {

    Purchases.shared.getOfferings { [weak self](offerings, error) in

        guard let offerings = offerings else { return }

        for dict in offerings.all {

            let offering = dict.value

            let packages = offering.availablePackages

            if let indexOfItem = packages.firstIndex(where: { $0.storeProduct.productIdentifier == productID }) {

                let package = packages[indexOfItem]

                self?.showPurchaseActionSheet(for: package)

                break

            }

        }

    }

}

For Android, you want to check either of these, it seems they both produce the same GooglePlayStore productID values

val playStore_productID_1 = package.product.googleProduct?.productId
val playStore_productID_2 = package.product.purchasingData.productId

However, for Android, I also used this below, but I got the RevenueCat productID, which for some weird reason is different from my PlayStoreID

val revenueCat_productID = package.product.id

For example

fun presentPurchaseFor(productID: String, activity: AppCompatActivity) {

    Purchases.sharedInstance.getOfferingsWith({ error ->        // … error    }) { offerings →

         offerings.current?.availablePackages?.takeUnless {             it.isEmpty()         }?.let { packages →             if (packages.isNotEmpty()){

                 packages.forEach { pkg: Package →

                                              if (pkg.product.googleProduct?.productId == productID) {

                                                  // this is the package you’re looking for

                                                 Purchases.sharedInstance.purchaseWith( PurchaseParams.Builder(activity, pkg).build() {...}

                                              }

                                              // *** OR ***

                                              if (pkg.product.purchasingData.productId == productID) {

                                                  // this is the package you’re looking for

                                                 Purchases.sharedInstance.purchaseWith( PurchaseParams.Builder(activity, pkg).build() {...}

                                              }

                                    }

                             }

          }

}

}