“Variable Undeclared” error when compiling to iOS Device, but not for Simulator

Question

I have an custom UIVIewController that is the base class for other controllers and has an instance of a custom UIView variable that is accessed by inherited the classes.

Answer 1

I had the exact same problem and it turns out that I did not remove an unused iVar/property in the SUBCLASS. Let's call it session. I removed _session from the iVar but I forgot to remove it from the properties, then in the .m file I had this synthesize session = _session. Once I removed them all, I can compile for iOS device without problems.

If you think your superclass is fine, look into your subclass, check your iVars and properties and synthesize section in the .m file