Hi this has puzzling me for a long time.
I have an older app, now I am doing an up date which require an additional button. I added this button to story. Now I need to connect it to the viewController.swift. Normally when I control-drag the UI element to the .swift file, it will ask me if I want UIAction or UIOutlet and create that empty function I can fill in the codes. However, this time when I control-drag it over the .swift nothing ever happens. is this a bug in Interfacebuilder or something else I am missing? Thanks.