java - RecyclerView with cursor loader is too slow when updating frequently -

i fetching podcast feed db , displaying in recyclerview using loadermanager.loadercallbacks. in content provider:

1. i register 'observer' in content resolver query() method with: cursor.setnotificationuri(getcontext().getcontentresolver(), uri);
2. when update/insert/delete in content resolver, notify observer with: getcontext().getcontentresolver().notifychange(uri, null); onloaderreset() triggered when needed

then have service downloadmanager, update progress of ongoing downloads database every second. loader loading data db , can see changing progress of every downloading episode in ui.

i think, wrong approach of notifying change , very slow, can't think of better solution right now. suggest effective solution recyclerview , download progress?

my custom activity recyclerview

public class myactivity     implements loadermanager.loadercallbacks<cursor> {      private recyclerview mrecyclerview;     private mycustomrecyclerviewadapter madapter;      ...      @override     public loader<cursor> oncreateloader(int id, bundle args) {         return new cursorloader(this,             mydatauri, null, null, null, null         );       }         @override     public void onloadfinished(loader<cursor> loader, cursor data) {         madapter.swapcursor(data);     }      @override     public void onloaderreset(loader<cursor> loader) {         madapter.swapcursor(null);     }      ... } 

my custom adapter

public class mycustomrecyclerviewadapter     extends recyclerview.adapter<episodeadapter.audioadapterviewholder> {      ...      public void swapcursor(cursor newcursor) {         mcursor = newcursor;         notifydatasetchanged();     }      ...  } 

reclyclerview more efficient (specially notifydatasetchanged() method) when adapter has stable ids.

if data have ids (e.g. db), should consider making adapter use sethasstableids(true) , override getitemid(int position).

i not sure solve problem practice.