iOS dark mode app icon

the application icon turns black in iOS 18's dark mode, resembling a ghost. Therefore, we would like to understand how Apple processes the background of app icons to turn them black in dark mode.

My request is as follows:

  1. I would like to understand the color change principle of app icons in dark mode.

  2. Without using Xcode 16, how can we ensure compatibility so that users with iOS 18 can see the normal icon?

iOS dark mode app icon
 
 
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