private async void Fav(object sender, EventArgs e)
{
Song current = await MusicPlayer.GetItem();
if (await SongManager.IsFavorite(current))
{
MainActivity.instance?.FindViewById <ImageButton>(Resource.Id.fav)?.SetImageResource(Resource.Drawable.Fav);
SongManager.UnFav(current);
}
else
{
MainActivity.instance?.FindViewById <ImageButton>(Resource.Id.fav)?.SetImageResource(Resource.Drawable.Unfav);
SongManager.Fav(current);
}
}