This app fixes a known Spotify bug that prevents you from opening Spotify URIs within the Spotify app. This is useful for example when you would like to use NFC tags to open Spotify playlists.
By default, Spotify URI links only open the app but do not open the playlist/artist/track in Spotify. This is a known bug referenced here and here.
If you would like to open the spotify:user:spotify:playlist:37i9dQZF1DWWQRwui0ExPn URI, you just have to prepend spotifylauncher://. The final URI which launches the playlist within Spotify would then look like this: spotifylauncher://spotify:user:spotify:playlist:37i9dQZF1DWWQRwui0ExPn.
Putting that URI into NFC tags works flawlessly. If you would like to add compatibility for iOS, I recommend that you add the default Spotify URI as a second entry.
To install this, just download the .apk file from the latest release and install it on your mobile phone. The application has no user interface and does not appear in available apps on the home screen. To uninstall it, you have to search for SpotifyLauncher in the settings.