multithreading - Android making thread in service -


i'm making mediaplayer service , don't want use application resource service. read must create new thread in service,but i'm beginner , can't understand how this. know how start new thread don't know how process startplay , stopall method in thread 

package com.filsoft.mouse;  import android.app.service; import android.content.intent; import android.media.mediaplayer; import android.media.mediaplayer.oncompletionlistener; import android.os.binder; import android.os.ibinder;  public class sound extends service implements oncompletionlistener {       mediaplayer[] mediaplayer=new mediaplayer[3];       private final ibinder mbinder = new localbinder();        @override       public ibinder onbind(intent intent) {         return mbinder;       }        @override       public void oncreate() {         mediaplayer[0] = mediaplayer.create(this, r.raw.sound1);         mediaplayer[0].setoncompletionlistener(this);         mediaplayer[0].setlooping(true);          mediaplayer[1] = mediaplayer.create(this, r.raw.sound2);            mediaplayer[1].setoncompletionlistener(this);         mediaplayer[1].setlooping(true);          mediaplayer[2] = mediaplayer.create(this, r.raw.sound3);         mediaplayer[2].setoncompletionlistener(this);         mediaplayer[2].setlooping(true);         }       public void startplay(int idx)       {           stopall();           if (!mediaplayer[idx].isplaying()) {               mediaplayer[idx].start();             }       }       public class localbinder extends binder {             public sound getservice() {                 return sound.this;             }          }       @override       public int onstartcommand(intent intent, int flags, int startid) {          return start_sticky;       }       public void stopall()       {            if (mediaplayer[0].isplaying()) {                   mediaplayer[0].stop();                 }                 if (mediaplayer[1].isplaying()) {                       mediaplayer[1].stop();                 }                 if (mediaplayer[2].isplaying()) {                       mediaplayer[2].stop();                 }       }        public void ondestroy() {         stopall();         mediaplayer[0].release();         mediaplayer[1].release();         mediaplayer[2].release();        }        public void oncompletion(mediaplayer _mediaplayer) {         stopself();       }      }


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