Why am I getting linker errors in XCode?

Last Update:

Linker errors are likely to appear when you've forgotten to link one or more frameworks to your project. Please review the frameworks required by the latest SDK in the iOS integration documentation and make sure your project is linking to all of them.

If you still see linker errors, it may be that you are missing the -ObjC linker flag in your XCode project's build settings and need to add it back to the Other Linker Flags field.