Android - Detect when the last item in a RecyclerView is visible

Question

I have a method that will check if the last element in a RecyclerView is completely visible by the user, so far I have this code The problem is how to check if the Recycler

Answer 1

You can create a callback in your adapter which will send a message to your activity/fragment every time when the last item is visible.

For example, you can implement this idea in onBindViewHolder method

@Override
public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int position) {
    if(position==(getItemCount()-1)){
        // here goes some code
        //  callback.sendMessage(Message);
     }
    //do the rest of your stuff 
}

UPDATE

Well, I know it's been a while but today I ran into the same problem, and I came up with a solution that works perfectly. So, I'll just leave it here if anybody ever needs it:

recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        LinearLayoutManager layoutManager=LinearLayoutManager.class.cast(recyclerView.getLayoutManager());
        int totalItemCount = layoutManager.getItemCount();
        int lastVisible = layoutManager.findLastVisibleItemPosition();

        boolean endHasBeenReached = lastVisible + 5 >= totalItemCount;
        if (totalItemCount > 0 && endHasBeenReached) {
            //you have reached to the bottom of your recycler view
        }
    }
});