Working with iOS projects ( iOdaApp ), you may find that Xcode project user interface becomes broken. The platform selection is unavailable (the project cannot be built, it’s impossible to choose what to build ).

The problem is related to some Xcode file or project setting becoming corrupt/broken and there's no other way to fix the problem other than to regenerate the project with Cmake. The problem occurs randomly but more likely to happen after Xcode update.