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What does mean "Error updating Objective-C type information"?

Gilbert Tordeur 146 Reputation points
2021-01-29T15:46:57.223+00:00

Hello.
I use VS for Mac Community 8.8.6 and Xcode 12.4, under MacOS 11.1.
I can build my Cocoa project with no error, and execute it.
But, for some weeks, when I try to open a storyboard (in the Solution column), VS displays "Error updating Objective-C type information" in red in the title bar. This is true for all storyboards, even a new one just created.
What does that mean? What can I do? Where do I need to search?
Regards,
Gilbert

P.S. a good tag for this post is difficult to find; many are rejected.

Xamarin
Xamarin
A Microsoft open-source app platform for building Android and iOS apps with .NET and C#.
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  1. Gilbert Tordeur 146 Reputation points
    2021-02-04T08:52:29.683+00:00

    Hello ColeXia.
    Thank you for your answer. However, it did not help.
    Finally I recreated all storyboards, and I copied the objects into them by extracting from the previous storyboards xml. That works.
    Regards,
    Gilbert

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  1. Cole Xia (Shanghai Wicresoft Co,.Ltd.) 6,751 Reputation points
    2021-01-30T06:35:36.78+00:00

    Hello,

    Welcome to Microsoft Q&A!

    Some steps to try if Visual Studio says "Error updating Xcode project. Invalid parameter"

    1. Quit Xcode and Visual Studio.
    2. Delete the obj folder and bin folder.
    3. Open the project in Visual Studio, and build the project.
    4. Try to open the problematic XIB (or storyboard) file.

    One more thing to try in case that doesn't work: add a new XIB (or storyboard) to the project, and then double-click that new file to open it in Xcode.

    Refer to https://gist.github.com/brendanzagaeski/8602459 .

    Thank you.

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