android - how to re decorate recyclerView items below an item that is removed -

i have decorator added recyclerview, , on initial load , when orientation changes decorator works great. when remove item want redecorate based on new positions of items after delete not working.

i have tried adding new decorators, failed; now

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i thought calling on recyclerview force re draw: executing code background not change.

 @override  public void onitemrangechanged(int positionstart, int   itemcount) {  super.onitemrangechanged(positionstart, itemcount);             log.e(tag, "range start: " + positionstart + " count: " +              itemcount );              runnable pendingremovalrunnable = new runnable() {                 @override                 public void run() {                     mrecyclerview.invalidateitemdecorations();                     log.d(tag, "run");                 }             };              pendingremovalrunnable.run();         }     }); 

this decorator code:

 @override  public void getitemoffsets(rect outrect, view view, recyclerview   parent, recyclerview.state state) {  super.getitemoffsets(outrect, view, parent, state);  int pos = parent.getchildadapterposition(view);   if (pos == -1)  return;   string vid = ((rvadapter)parent.getadapter()).getvid(pos);   misinlist =   playlistmanager.get(view.getcontext()).getisinplaylist(vid);  mistop = playlistmanager.get(view.getcontext()).getistop(vid);  misbottom = playlistmanager.get(view.getcontext()).getisbottom(vid);  mregularlayout = (linearlayout)   view.findviewbyid(r.id.regularlayout);  if (misinlist) {  if (mistop) {   mregularlayout.setbackground(contextcompat   .getdrawable(view.getcontext(),  r.drawable.list_selector_playlist_top));  } else { if (misbottom) {  mregularlayout.setbackground(contextcompat.  getdrawable(view.getcontext(),   r.drawable.list_selector_playlist_bottom));  } else {  mregularlayout.setbackground(  contextcompat.getdrawable(view.getcontext(),   r.drawable.list_selector_playlist)); }  } else {         mregularlayout.setbackground(contextcompat.  getdrawable(view.getcontext(), r.drawable.list_selector));}  } 

try this,

set recyclerview adapter in onresume() method of list activity. set again when changes made on recyclerview.

hope helps.