Trouble adding files to Xcode project

Question

I am trying to add 2 swift files to my Xcode project. They are located on my desktop currently. When I open them up, they look like this:

However, when I add them to my Xcode project, they look like this:

How can I add these files without the text messing up? Thanks!

Answer 1

That looks suspiciously like some kind of PNG file, not a text file. ("PNG" followed by "IHDR", specifically.) Are you sure that's a Swift file and not a screenshot of a Swift file or something?

That's also a very strange title in the titlebar of your screenshot. Perhaps that is related.

Either way, seems pretty clear that these allegedly Swift files are actually some format which is not plain text. Copy the text out of it into a new file created from scratch by Xcode, and that will fix whatever the problem is.