Deleting last item from RecyclerView does not work

Question

I have a recycler view

A user can delete or add an item in the RecyclerView .

Everything works fine until the RecyclerView reaches 1 element.

When I needed to delete the last item, it does not get deleted. The log shows that the item is removed from the ArrayList , but it still shows in the RecyclerView .

Is something more needed when deleting the last item?

Code:

public void removeItem(int adapterPosition){
       arrayList.remove(adapterPosition);
       Log.. ///
}

When adapterPosition is 0, it does not remove the item.

I have even kept a breakpoint in the method, and it is still showing that the adapterPosition is 0.

Answer 1

You need to call notifyItemRemoved in order to inform the RecyclerView that the item has been removed. This is necessary on every deletion/removal, not just the last one, but it may sometimes appear to work by coincidence if you don't.

That is, your removeItem method (assuming it's on your Adapter ) should look like:

public void removeItem(int adapterPosition){
    arrayList.remove(adapterPosition);
    notifyItemRemoved(adapterPosition);
    Log.. ///
}