c# - Interact with "system-wide" media player -

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i want develop music app windows 10 , i'm curious interface provided groove music next volume bar. i've tried googling more information haven't had success whatsoever. when i'm playing music in groove music , raise or lower volume, name artist , album artwork of current song show music controls next volume indicator this:

screen shot

i wondering how create dialog in own app , windows api's i'd have into.

you need use systemmediatransportcontrols

here basic setup play , pause. if enable more controls can using available properties ex.

systemcontrols.isnextenabled = true;

and have add case in button switch.

case systemmediatransportcontrolsbutton.next:                     //handle next song                     break;

xaml

<mediaelement x:name="mediaelement" height="100" width="100" aretransportcontrolsenabled="true"/>

c#

public mainpage() {     this.initializecomponent();      systemcontrols = systemmediatransportcontrols.getforcurrentview();      // register handle following system transpot control buttons.     systemcontrols.buttonpressed += systemcontrols_buttonpressed;      mediaelement.currentstatechanged += mediaelement_currentstatechanged;       systemcontrols.isplayenabled = true;     systemcontrols.ispauseenabled = true; }  private void mediaelement_currentstatechanged(object sender, routedeventargs e) {     switch (mediaelement.currentstate)     {         case mediaelementstate.playing:             systemcontrols.playbackstatus = mediaplaybackstatus.playing;             break;         case mediaelementstate.paused:             systemcontrols.playbackstatus = mediaplaybackstatus.paused;             break;         case mediaelementstate.stopped:             systemcontrols.playbackstatus = mediaplaybackstatus.stopped;             break;         case mediaelementstate.closed:             systemcontrols.playbackstatus = mediaplaybackstatus.closed;             break;         default:             break;     } }    void systemcontrols_buttonpressed(systemmediatransportcontrols sender, systemmediatransportcontrolsbuttonpressedeventargs args) {     switch (args.button)     {         case systemmediatransportcontrolsbutton.play:             playmedia();             break;         case systemmediatransportcontrolsbutton.pause:             pausemedia();             break;         case systemmediatransportcontrolsbutton.stop:             stopmedia();             break;         default:             break;     } }  private async void stopmedia() {     await dispatcher.runasync(windows.ui.core.coredispatcherpriority.normal, () =>     {         mediaelement.stop();     }); }  async void playmedia() {     await dispatcher.runasync(windows.ui.core.coredispatcherpriority.normal, () =>     {         if (mediaelement.currentstate == mediaelementstate.playing)             mediaelement.pause();         else             mediaelement.play();     }); }  async void pausemedia() {     await dispatcher.runasync(windows.ui.core.coredispatcherpriority.normal, () =>     {         mediaelement.pause();     }); }

output

output

also if want work in background have declaration in package.appxmanifest background tasks, enable audio , add entry point testuwp.mainpage

enter image description here


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