Greetings,
so I was adjusting an app to use color assets with named colors. Since my deployment target needs to be 9.0 I added an extension for UIColor and return a custom color for iOS < 11.
All seems fine when I build the app in XCode 11 against the iOS 13 SDK. Also uploading to Testflight is fine.
I tried to submit the binary to the App Store but I got informed by Apple that using a binary compiled with a XCode beta version is not allowed. If I build it against iOS 12.4 SDK in XCode 10.3 the dark mode is not activated at all, even on a phone that has the iOS 13 beta installed.
So I guess I have to wait until the GM version of XCode 11 is released, is that right?
I am a bit concerned about it because iOS 13 is scheduled for the 17th of September and of course I want to support dark mode as soon as possible.
Cheers,
Dominik