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Editorial Team
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Asked: 2026-06-01T03:54:15+00:00

I am getting a warning I do not fully understand every time I run

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I am getting a warning I do not fully understand every time I run my app:

Layout still needs update after calling -[WebHTMLView layout]. WebHTMLView or one of its superclasses may have overridden -layout without calling super. Or, something may have dirtied layout in the middle of updating it. Both are programming errors in Cocoa Autolayout. The former is pretty likely to arise if some pre-Cocoa Autolayout class had a method called layout, but it should be fixed.

(I’ve seen this related question, yet the answer provided solves some other issue, thus my question.) The warning appears as soon as I add a web view to my app. What does it mean, and how should I fix the issue?

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1 Answer

  1. Editorial Team

    It appears that - (void)layout is implemented in WebHTMLView. The source for WebKit is available on Apple’s open source page to review.

    http://www.opensource.apple.com/source/WebKit/WebKit-7534.53.11/mac/WebView/WebHTMLView.mm

    In the Auto Layout documentation, it states that you only need to implement “layout” if you need custom logic to layout subviews while using Auto Layout. It goes on to say that you should always call [super layout] in your custom implementation. That is not happening with WebHTMLView.

    https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/ApplicationKit/Classes/NSView_Class/Reference/NSView.html%23//apple_ref/occ/instm/NSView/layout

    This message can probably be safely ignored for your project. The same thing happens for me on a blank new project.

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