Get Android Updated Application -

i have been searching around site , google couple of hours now, , can't find this. maybe because use wrong search terms, don't know.

i making application list app of mine, , part easy enough. problem when come across updated system application, need information original package file (the 1 in /system/app rather updated 1 in /data/app), information version , file name.

now, extract root /data/system/packages.xml, thought there might better native solution using packagemanager rest of application list?