_OBJC_CLASS_$ Error in iOS application

Question

"_OBJC_CLASS_$_AddViewController", referenced from: objc-class-ref-to-AddViewController in ContactsController.o

ld: symbol(s) not found

collect2: ld returned 1 exit status

and the particular controllers are attached and compiling fine.

Thanks

Joe · Accepted Answer · 2011-03-29 19:55:02Z

24

Make sure that AddViewController.m is added to your compile sources.

answered Mar 29, 2011 at 19:55

Joe

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3 Comments

Joe Over a year ago

In XCode 4 you need to select your target, go to build phases, then compile sources. When you expand compile sources you will see a + at the bottom you can use to add the source file. If it is already included it will be grayed out and you have another issue otherwise add it.

sam_smith Over a year ago

This can also occur after you have deleted a file, remember to clean Shft+Cmd+K as this can often clean the problem away

StinkyCat Over a year ago

I deleted the .m, as I thought my simple class didn't need it. Spoiler alert: it needs it. Even if empty.

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