AppTransaction: how to use in ObjC apps (now that we are forced to use it after the exit(173) deprecation)

All I need to do is execute one line of Swift:

Now that’s something I can help with. Here how I did this:

1. I created a new project from an Objective-C template.

2. I choose File > New > File from Template and then chose the macOS > Cocoa Class template, with Swift as the language.

3. This asked whether I want to create a bridging header. I allowed that, but it’s not relevant to this discussion.

4. I edited the file to look like this:

   import StoreKit
   
   @objc
   class MyAppTransaction: NSObject {
   
       @objc
       class func checkReceipt() async -> String {
           do {
               let verificationResult = try await AppTransaction.shared
               switch verificationResult {
               case .unverified(_, _):
                   return "NG"
               case .verified(_):
                   return "OK"
               }
           } catch {
               return "ERR"
           }
       }
   }
   

   I’ve chosen silly status values. You can tweak these values, or even the types, as you wish. However, the types must be Objective-C representable. In this case I’m using String, which bridges to NSString.

5. On the Objective-C side, I added this:

   #import "Test764537-Swift.h"
   

   and then called the Swift code like this:

   [MyAppTransaction checkReceiptWithCompletionHandler:^(NSString * _Nonnull status) {
       NSLog(@"status: %@", status);
   }];
   

I’m working with Xcode 16.0, but I don’t think there’s anything Xcode 16 specific about this.

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—
Quinn “The Eskimo!” @ Developer Technical Support @ Apple
let myEmail = "eskimo" + "1" + "@" + "apple.com"