private void TaskInstance_Canceled(IBackgroundTaskInstance sender, BackgroundTaskCancellationReason reason)
{
this.SendToForeground(CommunicationConstants.BackgroundTaskStopped);
try
{
ApplicationSettings.BackgroundTaskResumeSongTime.Save(BackgroundMediaPlayer.Current.Position.TotalSeconds);
/*
//save state
ApplicationSettingsHelper.SaveSettingsValue(Constants.CurrentTrack, Playlist.CurrentTrackName);
ApplicationSettingsHelper.SaveSettingsValue(Constants.Position, BackgroundMediaPlayer.Current.Position.ToString());
ApplicationSettingsHelper.SaveSettingsValue(Constants.BackgroundTaskState, Constants.BackgroundTaskCancelled);
ApplicationSettingsHelper.SaveSettingsValue(Constants.AppState, Enum.GetName(typeof(ForegroundAppStatus), foregroundAppState));
backgroundtaskrunning = false;
//unsubscribe event handlers
systemmediatransportcontrol.ButtonPressed -= systemmediatransportcontrol_ButtonPressed;
systemmediatransportcontrol.PropertyChanged -= systemmediatransportcontrol_PropertyChanged;
Playlist.TrackChanged -= playList_TrackChanged;
//clear objects task cancellation can happen uninterrupted
playlistManager.ClearPlaylist();
playlistManager = null;
*/
this.mediaControls.ButtonPressed -= mediaControls_ButtonPressed;
playlistManager = null;
BackgroundMediaPlayer.Shutdown(); // shutdown media pipeline
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
}
if (_deferral != null)
_deferral.Complete();
}
private async void LoadPlaylistManager()
{
this.playlistManager = new ListPlaylistManager(await MusicLibrary.ConnectToDatabase());
}
