android - How to stop MediaBrowserServiceCompat? -

my service:

public class musicservice extends mediabrowserservicecompat { ... } 

my activity:

public class mediaactivity extends appcompatactivity{ private mediabrowsercompat mmediabrowser;  @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         mmediabrowser = new mediabrowsercompat(this,                 new componentname(this, musicservice.class), mconnectioncallback, null);         mmediabrowser.connect(); }      @override     protected void ondestroy() {         super.ondestroy();         mmediabrowser.disconnect();     } 

i want add button close in ui, how stop musicservice? , because continue casting in background