Does a Category applied to NSString also apply to NSCFString via the "toll-free bridge"?

Posted by half_brick on Stack Overflow See other posts from Stack Overflow or by half_brick
Published on 2010-04-26T04:26:26Z Indexed on 2010/04/26 4:33 UTC
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objective-c

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google-toolbox-for-mac

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iphone

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iphone-sdk

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categories

We're integrating a library into an iPhone app which appears to use the google toolbox for iPhone internally. The google toolbox adds a method gtm_stringBySanitizingAndEscapingForXML to NSString. The problem is, whenever we attempt to make a call to this library we get

[NSCFString gtm_stringBySanitizingAndEscapingForXML]: unrecognized selector sent to instance 0x272478

So it appears the library is calling that method on a NSCFString, to which the category does not apply. So... is it the case that the category will not apply across the toll-free bridge to CoreFoundation classes? If that's the case then we at least know why it's blowing up. Figuring out how to fix it is a different matter.

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