Android onactivityresult returns null if picked using default picker -

i had strange problem, i've checked on , on web found nothing , code has no problems @ all, want pick audio file fragment here code:

public void onclick(view arg0) {     switch (arg0.getid())     {         case r.id.upload_btn_select_file:             intent musicintent = new intent(ringtonemanager.action_ringtone_picker);             //musicintent.putextra(ringtonemanager.extra_ringtone_type, ringtonemanager.type_notification);             startactivityforresult(musicintent, req_music);             break;     } } 

and

@override public void onactivityresult(int requestcode, int resultcode, intent data) {     super.onactivityresult(requestcode, resultcode, data);     log.v("activity result" , "first enter");     //handle music     if( requestcode == req_music && resultcode == activity.result_ok  )     {         log.v("activity result" , "ok");         log.v("data" , data.getdata()+"");     } } 

now if pick song android default picker get

03-10 17:55:40.160: v/activity result(32644): first enter 03-10 17:55:40.160: v/activity result(32644): ok 03-10 17:55:40.160: v/data(32644): null 

but if pick same song es explorer picker get

03-10 17:48:46.400: v/activity result(32644): first enter 03-10 17:48:46.400: v/activity result(32644): ok 03-10 17:48:46.400: v/data(32644): content://com.estrongs.files/mnt/sdcard/music/01%20-%20first%20strike%20is%20deadly.mp3 

i'm using android 4.0 on xperia-neo-v, there can in code fix this? or it's sony's build?

i've added check received intent , found has keys

iterator<string> keyset= data.getextras().keyset().iterator(); while( keyset.hasnext())     log.v("key" , keyset.next()); 

then grabbed contains uri

log.v("uri" , data.getextras().get(ringtonemanager.extra_ringtone_picked_uri)+"");