ConcatenatingMediaSource WindowIndex change

ConcatenatingMediaSourceWindowIndex.kt

var currentIndex: Int = 0
var player : ExoPlayer
var handler = Handler()

fun onNewWindowIndex(index: Int) {
    currentIndex = index
    // Do something with your playlist using this reliable index
}

class PlayerEventListener: ExoPlayer.Listener {
	
    override fun onPositionDiscontinuity() {
        if (currentIndex != player.currentWindowIndex) {
            onNewWindowIndex(player.currentWindowIndex)
        }
    }
}

class PlayerLoadControl: LoadControl {
    
    override fun onPrepared() {
        handler.post {
            onNewWindowIndex(player.currentWindowIndex)
        }
    }
}