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Helper method to convert view to Image now returns warning

Forums > SwiftUI

The helper method to convert a SwiftUI view to an image from here:

With Xcode 14, this method sometimes returns a warning "Result of call to function returning 'Bool?' is unused".

The warning is tied to the return line: view?.drawHierarchy(in: controller.view.bounds, afterScreenUpdates: true)

The warning only appears sometimes - I'd say in every second build.

Why is this warning happening, and how to fix it?


drawHierarchy returns a Bool. When you don't need the return value then

_ = view?.drawHierarchy(in: controller.view.bounds, afterScreenUpdates: true)

should fix this. Why it doesn't show the warning everytime I don't know. Perhaps a bug in Xcode.


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