when i try to add method to ConversionViewController that updates celsiusLabel and build project i have an error: “Thread 1: Fatal error: Unexpectedly found nil while implicitly unwrapping an Optional value”
What i need to do to avoid this problem?
maybe someone can help? i’m stucked
I don’t have the book, but I am guessing that the variable celsiusLabel is an outlet and it is not connected to the corresponding text label object in the UI. Check to make sure that they are connected.
Thanks a lot!, you are right, it helps!