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NSClassFormString returning nil.
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NSClassFormString returning nil.


  • Subject: NSClassFormString returning nil.
  • From: Gustavo Pizano <email@hidden>
  • Date: Wed, 04 May 2011 18:12:38 +0200

Hello all.

Im sorry if this isn't the right place to post this, I wasn't sure if xcode list obj-c list or this one, so I decided this one.

I have created a Static Library which makes use of another library (cocos2d to be more specific), then I created a project that will use that library i created. When I drag-drop the library to that project well I got linker errors. Finally after working a little bit with that problem I ended up creating a wrokspace and dragging there both projects (library and final project), then I configured the link libraries,  and voila it worked.

NOT JUST YET!, it was ok until in the library i created I needed to use a NSClassFromString, then nightmare began again. It returned me nil all the time. I checked that the class names were ok, but nothing.

So I did a research and found a technical ticket form apple saying that when using this class from within a static library there is a bug and I may need to add to the other linker flags a -all_load or -force_load

I checked my library build settings and I saw that -ObjC flag was there, so I added -all_load , recompile library, recompile final project test and nothing... So then I thought i may need to put those flag in the final product build settings, I did so and OMG again linker problems, file now founds etc..


What can I do?

Thx in advance for any help provided and if this isn't the right list to post I apologize please let me know to which one should I write.


Gustavo _______________________________________________

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