How can i reference the SongName variable in my other object?```class MainActivity : AppCompatActivi...

# android

[K0NN4]

How can i reference the SongName variable in my other object?

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        SpotifyService.connect(this) {
            spotifyAppRemote?.let {
                it.playerApi.subscribeToPlayerState().setEventCallback {
                    val track: Track = it.track
                    Log.d("MainActivity", track.name + " by " + track.artist.name)
                    ALabel.text = track.name
                    Blabel.text = track.artist.name
                    var SongName = track.name
                    var SongArtist = track.artist.name
                }
            }
        }
        GeniusApi.PrintSomething()
    }
}

object GeniusApi {
    val BASE_URL = "<https://api.genius.com>"
    val SEARCH_URL = BASE_URL + "/search"
    var DATA = SongName@MainActivity

    fun PrintSomething() {
        Log.e("GeniusApi", DATA)
    }
}

[tseisel]

I'm not sure to understand properly, but you can't reference a local variable from anything other than the block where it is defined.

[K0NN4]

how could i make that variable "global" then or change my code the way i can use that variable globally

[K0NN4]

Does "companion objet" help here?

[louis993546]

Technically yes, you can put SongName in companion object and make it work

class Activity {
    companion object {
        var songName: String = “”
    }
}

object Foo {
    fun printSomething() {
        println(Activity.songName)
    }
}

But the question is “Why would you do that”. Can you just pass the song name as a parameter to the function?

[louis993546]

Maybe something like

object foo {
    func printSomethingFor(songName: String, lyricsFetched: (String) -> Unit) { /* making API call */ }
}

[louis993546]

(Probably with #rx or #coroutines instead of a callback)