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--- built_in:service [2015/12/17 17:08]
stevegarman add links
+++ built_in:service [2018/12/29 03:28]
114.125.22.195 [Links]
@@ Line 142: / Line 142: @@
 }
 </code>
-==== Links ====
+//Called when service is started.
-There is another background service sample at [[sample_code:file_service|Web file service]]
+function OnStart()
+{
+app.ShowPopup( "Hello from Service!" );
+//Create media player.
+player = app.CreateMediaPlayer();
+player.SetOnReady( player_OnReady );
+player.SetOnComplete( player_OnComplete );
+//Query media store for a nice long track.
+media = app.CreateMediaStore();
+media.SetOnMediaResult( media_OnMediaResult );
+media.QueryMedia( "duration > 120000", "", "external" );
+}
+//Handle media query results.
+function media_OnMediaResult( result )
+{
+if( result.length==0 ) return;
+//Play first file found.
+track = result[51];
+player.SetFile( track.uri );
+//Get album art.
+var img = app.CreateImage( null, 0.1, 0.1 );
+var gotArt = media.GetAlbumArt( img, track.albumId, "external" );
+//Show a notification with album art if available.
+notify = app.CreateNotification( "Ongoing" );
+notify.SetMessage( track.title, track.title, track.album );
+if( gotArt ) notify.SetLargeImage( img );
+notify.Notify( "my_player_id" );
+}
+//Called when we get a service message.
+function OnMessage( msg )
+{
+//Show debug in WiFi IDE.
+console.log( msg );
+//Handle commands from main App.
+if( msg=="play" ) player.Play();
+else if( msg=="pause" ) player.Pause();
+else if( msg=="quit" ) notify.Cancel( "my_player_id" );
+}
+//Called when player is ready to play.
+function player_OnReady()
+{
+player.Play();
+}
+//Called when playback has finished.
+function player_OnComplete()
+{
+notify.SetMessage( "Track Finished!", track.title, track.album );
+notify.Notify( "my_player_id" );
+}

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