Issue refreshing a view of a row in recyclerview

Question

I want to update a view of the recyclerview when a notifyItemChanged has been called. The thing is that I don't want to refresh the entire row but only the view of the row. (to avoid the blinking effect of the row)

There is a method called notifyItemChanged(int, payload obj).

Can I use that to achieve that? If so how to do it?

Answer 1

Finally I found how to update only the specific view of a row in RecyclerView.

(1) Override onBindViewHolder(Recycler.ViewHolder VH, int position, List payloads) in the adapter

(2) Inside that onBindViewHolder method,

if(payloads != null && !payloads.isEmpty() && (payloads.get(0) instanceof  customObject)){
   // update the specific view
}else{
   // I have already overridden  the other onBindViewHolder(ViewHolder, int)
   // The method with 3 arguments is being called before the method with 2 args. 
   // so calling super will call that method with 2 arguments. 
   super.onBindViewHolder(holder,position,payloads);
}

(3) So to notify data change and update the view, need to call the notifyItemChanged(int position, Object payload). Need to pass the customObject(model which holds the data) as the payload object.

adapter.notifyItemChanged(i, obj);

Note : Need to disable the RecyclerView's ItemAnimator(By default it is enabled). Otherwise payload object will be empty.

recyclerView.setItemAnimator(null);

or

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

UPDATE: I used this method recently without disabling the ItemAnimator. So no need to disable ItemAnimator. - (recyclerview-v7:25.4.0)

for further reference

Answer 2

You can use this to get the view of updated item:

View v = recyclerView.getLayoutManager().findViewByPosition(position);
if (v != null){
    //update your view
}