I am a beginner in Xcode, and am just trying to make a sample app to learn the ropes. Over the last few days I have had a few issues. Every time I try to open assistant editor from storyboard, it takes me to a file called 'UIViewController.h.' I checked the top bar, and it is set to automatic. There is no manual option when I click on it either. On top of this, when I try to manually splitscreen ViewController.swift and ctrl-drag from my object to the editor, it doesn't let me add an outlet, and is stuck on 'action.' When I try to change the class for my view controller in identity inspector, it doesn't let me type in my class, which is 'ViewController.swift.' I even tried deleting the DerivedData folder, which was recommended by another forum, which didn't help. I really don't know what to do here, given that I have exhausted every resource on google's front page regarding this issue.

I tried to open the file in a new project, but this didn't do anything. When I right click the file and 'open as,' I don't see the option of interface builder. The drop down menu in the identity pane also has no interface builder option.