android - How to implement ItemAnimator of RecyclerView to disable the animation of notifyItemChanged -


in project need disable "change" animation of recyclerview while notifyitemchanged.

i investigated in source of recyclerview , had overridden android.support.v7.widget.defaultitemanimator below:

private static  class itemanimator extends defaultitemanimator {     @override     public boolean animatechange(recyclerview.viewholder oldholder, recyclerview.viewholder newholder, int fromx, int fromy, int tox, int toy) {         if(oldholder != null)         {             oldholder.itemview.setvisibility(view.invisible);             dispatchchangefinished(oldholder, true);         }          if(newholder != null)         {             dispatchchangefinished(newholder, false);         }          return false;     } }

but not sure if match spec of google document: recyclerview.itemanimator.animatechange

according understanding source code, if not override method properly, oldholder will not recycled.

please me figure out how override animatechange in correct way.

i have found correct solution remove animatechange.

it's simple. google has implemented functionality.

((simpleitemanimator) recyclerview.getitemanimator()).setsupportschangeanimations(false);

documentation: setsupportschangeanimations


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