thelinmichael/spotify-web-api-java: How to get value from Async/Sync methods - spotify

Question

For instance, I want to obtain the uri of a Spotify track and put it in another method as a String value, however I'm lost on how I'd go about doing that. I tried experimenting with SharedPreferences to get the value but getString method wasn't working. I was just wondering if there's a simpler way to getting say track.getUri (or any) in another method from the Async/Sync method. Any assistance would be greatly appreciated.
The code so far:
private static final String accessToken = "...";
private static final String id = "01iyCAUm8EvOFqVWYJ3dVX";
public static SharedPreferences.Editor editor;
private static final SpotifyApi spotifyApi = new SpotifyApi.Builder()
.setAccessToken(accessToken)
.build();
private static final GetTrackRequest getTrackRequest = spotifyApi.getTrack(id)
// .market(CountryCode.SE)
.build();
public static void getTrack_Sync() {
try {
final Track track = getTrackRequest.execute();
System.out.println("Name: " + track.getName());
} catch (IOException | SpotifyWebApiException | ParseException e) {
System.out.println("Error: " + e.getMessage());
}
}
#RequiresApi(api = Build.VERSION_CODES.N)
public void getTrack_Async() {
try {
final CompletableFuture<Track> trackFuture = getTrackRequest.executeAsync();
// Thread free to do other tasks...
// Example Only. Never block in production code.
final Track track = trackFuture.join();
String uri = track.getUri();
editor = getSharedPreferences("uri", 0).edit();
editor.putString("uri", uri);
editor.commit();
editor.apply();
System.out.println("Name: " + track.getUri());
} catch (CompletionException e) {
System.out.println("Error: " + e.getCause().getMessage());
} catch (CancellationException e) {
System.out.println("Async operation cancelled.");
}
}
public void go() {
getTrack_Async();
// String value = editor.getString("uri", )
}

Answer 1

To get the track you need some kind of information to start with. e.g. I have the spotify trackId and can find the track (synchronously) like this:
public Track getTrack(String trackId) {
return spotifyApi.getTrack(trackId).build().execute();
}
Now the Track object (specifically com.wrapper.spotify.model_objects.specification.Track) provides a lot of information. e.g. the field uri.
So you could do just:
public void run(String trackId) {
Track track = spotifyApi.getTrack(trackId).build().execute();
String uri = track.uri;
// now call something else with the uri?
}
Does that help? Your question was not entirely clear for me.