Note: I'm a total newbie in Android Studio/Java (really, my Google searches are stuff like "What is Gradle").
Problem: error when attempting to install them into Android Studio
TL;DR
This is error I get when I attempt to import a theme (Windows 11):
Invalid File The file
C:\...\Downloads\file_name.jarcontains no settings to import. Please make sure that it was generated by 'File | Manage IDE Settings | Export Settings...' feature.
Here are the steps I'm doing to install a theme, up to the error:
Download a theme in the form of a .jar file. I went to JetBrains Marketplace to get the theme. Note that you're asked to download a specific version of the theme, so I chose themes that correspond to the latest version of Android Studio, as that's what I have. I also chose from the "free" selections. Perhaps I did something wrong here? I can't think of what, though, as it's fairly self-explanatory.
Next, go to File >> Manage IDE Settings >> Import Settings. This opens a window called Import File Location, a file explorer. Navigate to the .jar file you want to import, and select it. For this example, I navigate to my Downloads folder and select a file:
When I select it, this error pops up:
To me, this message makes no sense. I'm not exporting anything! When I go to the Exporting page, it's just a standard way to export your settings. The .jar files that are downloaded aren't empty files. Also, this appears to be an uncommon error -- at least, I couldn't find anything like this on the interwebs (but maybe I didn't use the best search queries).
I'm obviously doing something very wrong that'll be very obvious to me in retrospect. Can someone tell me what that is?