/// <summary>
/// Hệ thống gọi đến hàm này khi association backgroundtask được bật
/// </summary>
/// <param name="taskInstance"> hệ thống tự tạo và truyền vào đây</param>
public async void Run(IBackgroundTaskInstance taskInstance)
{
//System.Diagnostics.Debug.WriteLine("background run");
taskInstance.Canceled += new BackgroundTaskCanceledEventHandler(BackgroundTaskCanceled);
taskInstance.Task.Completed += new BackgroundTaskCompletedEventHandler(BackgroundTaskCompleted);
_backgroundstarted.Set();//
_deferral = taskInstance.GetDeferral();
//Playlist = new BackgroundPlaylist();
_smtc = initSMTC();
this._foregroundState = this.initForegroundState();
BackgroundMediaPlayer.Current.CurrentStateChanged += BackgroundMediaPlayer_CurrentStateChanged;
//Playlist = await BackgroundPlaylist.LoadBackgroundPlaylist("playlist.xml");
Playlist = new BackgroundPlaylist();
Playlist.ListPathsource = await BackgroundPlaylist.LoadCurrentPlaylist(Constant.CurrentPlaylist);
if (_foregroundState != eForegroundState.Suspended)
{
ValueSet message = new ValueSet();
message.Add(Constant.BackgroundTaskStarted, "");
BackgroundMediaPlayer.SendMessageToForeground(message);
}
Playlist.TrackChanged += Playlist_TrackChanged;
BackgroundMediaPlayer.MessageReceivedFromForeground += BackgroundMediaPlayer_MessageReceivedFromForeground;
BackgroundMediaPlayer.Current.MediaEnded +=Current_MediaEnded;
ApplicationSettingHelper.SaveSettingsValue(Constant.BackgroundTaskState, Constant.BackgroundTaskRunning);
isbackgroundtaskrunning = true;
_loopState = eLoopState.None;
}
/// <summary>
/// Hệ thống gọi đến hàm này khi association backgroundtask được bật
/// </summary>
/// <param name="taskInstance"> hệ thống tự tạo và truyền vào đây</param>
public void Run(IBackgroundTaskInstance taskInstance)
{
System.Diagnostics.Debug.WriteLine("bg RUN");
_smtc = initSMTC();
taskInstance.Canceled += BackgroundTaskCanceled;
taskInstance.Task.Completed += BackgroundTaskCompleted;
this._foregroundState = this.initForegroundState();
// Playlist.TrackedChanged += Playlist_TrackChanged;
BackgroundMediaPlayer.MessageReceivedFromForeground += BackgroundMediaPlayer_MessageReceivedFromForeground;
BackgroundMediaPlayer.Current.CurrentStateChanged +=BackgroundMediaPlayer_CurrentStateChanged;
_backgroundstarted.Set();
ApplicationSettingHelper.SaveSettingsValue(Constant.BackgroundTaskStarted, Constant.BackgroundTaskRunning);
isbackgroundtaskrunning = true;
_deferral = taskInstance.GetDeferral();
}
private void BackgroundMediaPlayer_MessageReceivedFromForeground(object sender, MediaPlayerDataReceivedEventArgs e)
{
System.Diagnostics.Debug.WriteLine("message received");
foreach (string key in e.Data.Keys)
{
switch (key)
{
case Constant.AppResumed:
this._foregroundState = eForegroundState.Active;
break;
case Constant.AppSuspended:
this._foregroundState = eForegroundState.Suspended;
break;
case Command.InitList:
System.Diagnostics.Debug.WriteLine("message received Init list");
//Playlist.ListPathsource.Add(e.Data[Command.InitList])
//var listtrack = (string[])e.Data[Command.InitList];
//Playlist.ListPathsource = listtrack;
break;
case Command.SetCurrentIndex:
var currentindex = Convert.ToInt32(e.Data[Command.SetCurrentIndex]);
Playlist.Currentindex = currentindex;
break;
case Command.PlayWithIndex:
//Playlist.Play();
Playlist.Currentindex = Int32.Parse(e.Data[Command.PlayWithIndex].ToString());
System.Diagnostics.Debug.WriteLine(Playlist.Currentindex);
BackgroundMediaPlayer.Current.SetUriSource(new Uri(Playlist.CurrentItem));
updatenewstmc();
break;
case Command.Pause:
BackgroundMediaPlayer.Current.Pause();
break;
case Command.Play:
BackgroundMediaPlayer.Current.Play();
break;
case Command.Shuffle:
Playlist.Shuffle();
break;
case Command.Next:
Playlist.Next();
BackgroundMediaPlayer.Current.SetUriSource(new Uri(Playlist.CurrentItem));
_smtc.DisplayUpdater.MusicProperties.Title = Playlist.Name;
_smtc.DisplayUpdater.Update();
break;
case Command.Previous:
Playlist.Previous();
BackgroundMediaPlayer.Current.SetUriSource(new Uri(Playlist.CurrentItem));
_smtc.DisplayUpdater.MusicProperties.Title = Playlist.Name;
_smtc.DisplayUpdater.Update();
break;
case Command.LoopState:
this._loopState = (eLoopState)Enum.Parse(typeof(eLoopState), e.Data[Command.LoopState].ToString());
break;
}
}
}