android.os.DeadObjectException error while creating a mp3player -

while creating simple mp3player stop button , when run code , android.os.deadobjectexception error pops out , unable find out reason behind this. please reply if can figure out. in advance. following code , latter 1 logcat view.

package com.songs.playit;  import java.io.file; import java.io.filenamefilter; import java.io.ioexception; import java.util.arraylist;  import java.util.list;  import android.app.listactivity; import android.media.mediaplayer; import android.os.bundle; import android.os.environment; import android.util.log; import android.view.view; import android.view.view.onclicklistener; import android.widget.arrayadapter; import android.widget.button; import android.widget.listview;    public class mainactivity extends listactivity {      private final static string sdpath = new string(environment.getexternalstoragedirectory().getabsolutepath());     private list<string> songs = new arraylist<string>();     mediaplayer mp =new mediaplayer();      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);        setcontentview(r.layout.fragment_main);         updateplaylist();       button stopplay = (button) findviewbyid(r.id.stopbtn);         stopplay.setonclicklistener(new onclicklistener(){                        public void onclick(view v){             mp.stop();             }             });     }     private  void updateplaylist() {         // todo auto-generated method stub         file home = new file(sdpath);            if(home.listfiles(new mp3filter()).length>0){         for(file file: home.listfiles( new mp3filter())){             songs.add (file.getname());                     }         arrayadapter<string> songlist= new arrayadapter<string>(this , r.layout.songs_item);         setlistadapter(songlist);               }     }       protected void onlistitemclick(listview list , view v , int position , long id){         try{             mp.reset();                   mp.setdatasource(sdpath + songs.get(position));             mp.prepare();             mp.start();         }         catch(ioexception e){             log.v(getstring(r.string.app_name), e.getmessage());         }     }     @override   protected void ondestroy() {   super.ondestroy();   } }   class mp3filter implements filenamefilter {      @override     public boolean accept(file dir, string filename) {         // todo auto-generated method stub         {         return (filename.endswith(".mp3"));     }      }   } 

here logcat view

08-18 12:37:12.810: e/javabinder(664): *** uncaught remote exception!  (exceptions not yet supported across processes.) 08-18 12:37:12.810: e/javabinder(664): java.lang.runtimeexception: android.os.deadobjectexception 08-18 12:37:12.810: e/javabinder(664):  @ android.os.parcel.writeexception(parcel.java:1366) 08-18 12:37:12.810: e/javabinder(664):  @ android.os.binder.exectransact(binder.java:410) 08-18 12:37:12.810: e/javabinder(664):  @ dalvik.system.nativestart.run(native method) 08-18 12:37:12.810: e/javabinder(664): caused by: android.os.deadobjectexception 08-18 12:37:12.810: e/javabinder(664):  @ android.os.binderproxy.transact(native method) 08-18 12:37:12.810: e/javabinder(664):  @ android.content.iintentreceiver$stub$proxy.performreceive(iintentreceiver.java:124) 08-18 12:37:12.810: e/javabinder(664):  @ android.app.activitythread$applicationthread.scheduleregisteredreceiver(activitythread.java:816) 08-18 12:37:12.810: e/javabinder(664):  @ android.app.applicationthreadnative.ontransact(applicationthreadnative.java:394) 08-18 12:37:12.810: e/javabinder(664):  @ android.os.binder.exectransact(binder.java:404) 08-18 12:37:12.810: e/javabinder(664):  ... 1 more