How to port workaround for iOS crash on 15.7? (SKStoreProductViewController sceneDisconnected)

Unity Engine
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We are observing lots of crashes on iOS 15.7 for our iOS game. Something iOS is responsible for, which is fixed in iOS 16.

More info: [SKStoreProductViewController scen… | Apple Developer Forums

People have suggested workarounds for this problem, But can anyone help me migrate this to Unity?
I really prefer this to be done from inside Unity, and not after exporting the Xcode project and modifying manually; Either by doing something in IPostprocessBuildWithReport, or any other possible way.
(though how to do it manually is also needed, if this can’t be automated)

Available workarounds:
storekit - SKStoreProductViewController crashes for unrecognized selector named sceneDisconnected: in iOS 15.6 beta5 - Stack Overflow, storekit - SKStoreProductViewController crashes for unrecognized selector named sceneDisconnected: in iOS 15.6 beta5 - Stack Overflow

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2

Can anyone help with this?

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3

OK, I had to do it myself.

Call this method from an IPostprocessBuildWithReport in OnPostprocessBuild() and pass it report.summary.outputPath and all will be set:

//Fix for a bug that Apple introduced in iOS 15.7 that leads to crashes
    //More info: https://developer.apple.com/forums/thread/714464 , workarounds: https://stackoverflow.com/a/73796906/1235063 , https://stackoverflow.com/questions/72907240/skstoreproductviewcontroller-crashes-for-unrecognized-selector-named-scenediscon/74232140#74232140
    //Expections on Xcode project:
    //SWIFT_OBJC_BRIDGING_HEADER must be set (only for Unity-iPhone target)
    //CLANG_ENABLE_MODULES set to true, for Unity-iPhone, Unity-iPhone Tests, and UnityFramework
    //SWIFT_VERSION for the 3 targets must be specified
    private void AddWorkaroundForCrashIniOS15_7(string pathToBuiltProject)
    {
        string projectPath = PBXProject.GetPBXProjectPath(pathToBuiltProject);
        PBXProject project = new PBXProject();
        project.ReadFromString(File.ReadAllText(projectPath));

        string swiftFileName = "CrashPrevIOS15_7.swift";
        string swiftFileContent = "//\n//  File.swift\n//  Unity-iPhone\n//\n//  Created by Paiman Roointan on 1/18/23.\n//\n\nimport Foundation\nimport StoreKit\n\n@available(iOS, introduced: 15.7, obsoleted: 16.0)\n@objc extension SKStoreProductViewController {\n    func sceneDisconnected(_ arg: AnyObject) {}\n    func appWillTerminate() {}\n}\n";
        string swiftFilePath = Path.Combine(pathToBuiltProject, swiftFileName);

        if (!File.Exists(swiftFilePath))
            File.WriteAllText(swiftFilePath, swiftFileContent);

        project.AddFileToBuild(
                    project.GetUnityMainTargetGuid(),
                    project.AddFile(swiftFileName, swiftFileName));

        string bridgingHeaderFileName = "Unity-iPhone-Bridging-Header.h";
        string bridgingHeaderFileContent = "//\n//  Use this file to import your target's public headers that you would like to expose to Swift.\n//";
        string bridgingHeaderFilePath = Path.Combine(pathToBuiltProject, bridgingHeaderFileName);

        if (!File.Exists(bridgingHeaderFilePath))
            File.WriteAllText(bridgingHeaderFilePath, bridgingHeaderFileContent);

        if (string.IsNullOrEmpty(project.GetBuildPropertyForConfig(project.GetUnityMainTargetGuid(), "SWIFT_VERSION")))
            project.SetBuildProperty(project.GetUnityMainTargetGuid(), "SWIFT_VERSION", "5.0");

        if (string.IsNullOrEmpty(project.GetBuildPropertyForConfig(project.GetUnityFrameworkTargetGuid(), "SWIFT_VERSION")))
            project.SetBuildProperty(project.GetUnityFrameworkTargetGuid(), "SWIFT_VERSION", "5.0");

        if (string.IsNullOrEmpty(project.GetBuildPropertyForConfig(project.TargetGuidByName("Unity-iPhone Tests"), "SWIFT_VERSION")))
            project.SetBuildProperty(project.TargetGuidByName("Unity-iPhone Tests"), "SWIFT_VERSION", "5.0");

        project.SetBuildProperty(project.GetUnityMainTargetGuid(), "CLANG_ENABLE_MODULES", "YES");
        project.SetBuildProperty(project.GetUnityFrameworkTargetGuid(), "CLANG_ENABLE_MODULES", "YES");
        project.SetBuildProperty(project.TargetGuidByName("Unity-iPhone Tests"), "CLANG_ENABLE_MODULES", "YES");

        project.SetBuildProperty(project.GetUnityMainTargetGuid(), "SWIFT_OBJC_BRIDGING_HEADER", bridgingHeaderFileName);

        File.WriteAllText(projectPath, project.WriteToString());
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