Getting error in previews when are inside of a static framework

Question

Created Apr ’22

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Previews don't work when are inside of a static framework. Has anyone experimented it also?

MessageSendFailure: Message send failure for update



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|  RemoteHumanReadableError: Unknown preview provider "Provider_Previews_"

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|  XCPreviewAgent does not contain a preview provider named "Provider_Previews_". Check your build settings to ensure the preview provider is compiled into your product.

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|  Mangled name: 0012Provider_0021Provider_Previews_V

Thanks in advance

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Answer 1

Developer Tools Engineer OP

Apple

Apr ’22

Accepted Answer

Yes this is a known issue. Currently previews are not supported inside of static libraries.

As a workaround you could create a dynamic library or framework target in addition to the static library and put the file in both targets. Then, make sure your scheme is building the framework/dynamic library target even if it's not being included into any of your shipping apps, etc.

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