Assistant editor(Xcode 7.3) always showing interface file in storyboard , even when I choose manually
Guys I just stop dealing with this problem by changing the settings in xcode 9.2. And now i use Navigation Pane.
Here is how it works :
Ok now if you go to xcode -> preferences -> navigationand Choose the "Uses Focused Editor" as in the picture below.
Now you can manually select inside the Navigation Pane.Just click whichever page you would like to change and select in the Navigation Pane.
Here is a few screenshots :
Pictures shows code files but it works with everything you can click in the Navigation Pane.
Try to drag and drop file from the Project Navigator into the path of the Assistant Editor as temporary fix.You also can click on this icon to bring recent files.
Try to clean your project, clean Build Folder, restart Xcode.Make sure the view controller in your Storyboard has correct custom class name.