Add to a playlist using the Google Pixel's 'Now Playing' ambient feature. When your Pixel device detects a song is playing, that song (if found on the Now Playing database) will be added to a Spotify Playlist.
https://proandroiddev.com/implementing-dark-theme-in-your-android-application-ec2b4fefb6e3 https://medium.com/over-engineering/setting-up-a-material-components-theme-for-android-fbf7774da739