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

In my project I need disable the "change" animation of RecyclerView while notifyItemChanged.

I investigated in the source of RecyclerView and had overridden android.support.v7.widget.DefaultItemAnimator as 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 I am not sure if I match the spec of the Google document: RecyclerView.ItemAnimator.animateChange

According to my understanding source code, if I do not override the method properly, the oldHolder will not be recycled.

Please help me figure out how to override animateChange in a correct way.

Solution 1:

I have found the correct solution to just remove the animateChange.

It's very simple. Google has implemented the functionality.

((SimpleItemAnimator) RecyclerView.getItemAnimator()).setSupportsChangeAnimations(false);

Documentation: setSupportsChangeAnimations

Solution 2:

I had the same problem. When calling notifyItemChanged there was a red overlay flashing. After experimenting around with your code I finally removed the default Animator by simply calling

recyclerView.setItemAnimator(null);

on the RecyclerView.

Solution 3:

@Kenny answer didn't work anymore because google remove method setSupportsChangeAnimations() (but why?) in support library 23.1.0.

In some case setChangeDuration(0) can work as workaround.

@edit I suggest use something like that:

  RecyclerView.ItemAnimator animator = recyclerView.getItemAnimator();
        if (animator instanceof SimpleItemAnimator) {
            ((SimpleItemAnimator) animator).setSupportsChangeAnimations(false);
        }

Solution 4:

Just if someone stumbles like me:
Somehow setSupportsChangeAnimations(false) didn't work for me, but recyclerView.getItemAnimator().setChangeDuration(0) has just removed the animation nicely.