C# Class BackgroundAudioTask.MyBackgroundAudioTask

Impletements IBackgroundTask to provide an entry point for app code to be run in background. Also takes care of handling UVC and communication channel with foreground

Inheritance: IBackgroundTask

Mostra file Open project: dotnetcurry/Windows10-UWP

Public Methods

Method	Description
Run ( IBackgroundTaskInstance taskInstance ) : void	The Run method is the entry point of a background task.

Private Methods

Method	Description
BackgroundMediaPlayer_MessageReceivedFromForeground ( object sender, MediaPlayerDataReceivedEventArgs e ) : void	Raised when a message is recieved from the foreground app
CreatePlaybackList ( IEnumerable songs ) : void	Create a playback list from the list of songs received from the foreground app.
Current_CurrentStateChanged ( MediaPlayer sender, object args ) : void
GetCurrentTrackId ( ) : Uri
GetTrackId ( MediaPlaybackItem item ) : Uri
OnCanceled ( IBackgroundTaskInstance sender, BackgroundTaskCancellationReason reason ) : void	Handles background task cancellation. Task cancellation happens due to: 1. Another Media app comes into foreground and starts playing music 2. Resource pressure. Your task is consuming more CPU and memory than allowed. In either case, save state so that if foreground app resumes it can know where to start.
PlaybackList_CurrentItemChanged ( MediaPlaybackList sender, CurrentMediaPlaybackItemChangedEventArgs args ) : void	Raised when playlist changes to a new track
SkipToNext ( ) : void	Skip track and update UVC via SMTC
SkipToPrevious ( ) : void	Skip track and update UVC via SMTC
StartPlayback ( ) : void	Start playlist and change UVC state
TaskCompleted ( BackgroundTaskRegistration sender, BackgroundTaskCompletedEventArgs args ) : void	Indicate that the background task is completed.
UpdateUVCOnNewTrack ( MediaPlaybackItem item ) : void	Update Universal Volume Control (UVC) using SystemMediaTransPortControl APIs
smtc_ButtonPressed ( SystemMediaTransportControls sender, SystemMediaTransportControlsButtonPressedEventArgs args ) : void	This function controls the button events from UVC. This code if not run in background process, will not be able to handle button pressed events when app is suspended.
smtc_PropertyChanged ( SystemMediaTransportControls sender, SystemMediaTransportControlsPropertyChangedEventArgs args ) : void	Fires when any SystemMediaTransportControl property is changed by system or user

Method Details

Run() public method

The Run method is the entry point of a background task.

public Run ( IBackgroundTaskInstance taskInstance ) : void
taskInstance	IBackgroundTaskInstance
return	void