Before iOS 18, I have the following code that works well:

    let icons = Bundle.main.infoDictionary!["CFBundleIcons"] as! [String: Any]
    let primaryIcon = icons["CFBundlePrimaryIcon"] as! [String: Any]
    let iconName = primaryIcon["CFBundleIconName"] as! String
    return UIImage(named: iconName)!

The iconName is "AppIcon", and it returns the 1024×1024 image. Now using iOS 18 base SDK, UIImage(named: iconName) is nil, causing a crash in my app.

More details:

• If I build using base SDK iOS 17, it runs fine on both iOS 17 and iOS 18.
• If I build using base SDK iOS 18 (with deployment target iOS 17), it crashes on both iOS 17 and iOS 18.

I have tried the answers from How to get UIImage of AppIcon?, but the result isn’t as good. Specifically, the following code that uses CFBundleIconFiles instead of CFBundleIconName:

    let icons = Bundle.main.infoDictionary!["CFBundleIcons"] as! [String: Any]
    let primaryIcon = icons["CFBundlePrimaryIcon"] as! [String: Any]
    let iconFiles = primaryIcon["CFBundleIconFiles"] as! [String]
    return UIImage(named: iconFiles[0])!

The iconFiles[0] returns AppIcon60x60, which uses [email protected] in main bundle which is 120×120, a lot lower than 1024×1024.

I have done the following research:

1. In my app setup, I use asset catelog (Assets.xcassets -> AppIcon), with a image file called icon1024.png that is 1024×1024.

2. In General tab of the target setting, I set AppIcon as the app icon.

3. in the resulting product (.app file), I see 3 related files:

• [email protected]
• AppIcon76x76@2x~ipad.png
• Assets.car

Then I use “Asset Catelog Tinker” app to inspect Assets.car, I got a single file icon1024.png.

I tried building with both iOS 17 and iOS 18, and got the same .app folder structure.

This means that when building with base SDK iOS 17, when calling UIImage(named: "AppIcon"), it somehow magically loads Assets.car/icon1024.png file. But this doesn’t work anymore when building for iOS 18.