I know there's a lot of people out there that want to download the spectrum tv app on their android tv or android tv device (nvidia shield etc). So I just spent a couple hours today making a custom APK shortcut for the spectrum app. You will need a mouse or game controller connected to your tv or nvidia shield to navigate the guide etc with it. The app will basically be like a giant tablet version of the spectrum tv app on your tv. I decided to upload all the files needed to get the Spectrum TV app on android TV or nvidia shield. Link: https://drive.google.com/drive/folders/1TQvi2PJsZtce3DaHusYOPlYyf66vM7cs?usp=sharing
You can skip installing the shortcut app if you want to but I would highly recommend installing it as well since this will give you the tile banner on your android tv interface on the homepage and app drawer. In your list of apps under settings it will show 2 spectrum tv apps the smaller file size one will be the shortcut apk and the larger file size one will be the spectrum app. Hope this helps someone.
Pics: https://imgur.com/a/8MwVeAy
Also, there has to be a way to make a custom version of this app to make it so you can navigate like a mouse but with the arrow keys on a remote. Or bind the standard remote buttons to stuff on the app. If there's any app developers out there that know what they're doing please chime in on the possibility of that!
Edit: Just in case anyone was wondering this is the tool I used to make the custom shortcut. You can use it for any app you want by the way and you don't need to reinstall the original app. Just make the shortcut and install it. Easy! http://atvlauncher.trekgonewild.de/index.php