Recyclerview.onscrollchangelistener for downloading sections of data from database

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Android

Hello, I am a beginner in android studio. In a project, after getting images and text from database, they will show in a recyclerview.
In the project:

minSdkVersion 15
       targetSdkVersion 23

First 5 items will show and then after checking that the recyclerview scroll has reached the bottom, other items will download.

//This method would check that the recyclerview scroll has reached the bottom or not
    private boolean isLastItemDisplaying(RecyclerView recyclerView) {
        if (recyclerView.getAdapter().getItemCount() != 0) {
            int lastVisibleItemPosition = ((LinearLayoutManager) recyclerView.getLayoutManager()).findLastCompletelyVisibleItemPosition();
            if (lastVisibleItemPosition != RecyclerView.NO_POSITION && lastVisibleItemPosition == recyclerView.getAdapter().getItemCount() - 1)
                return true;
        }
        return false;
    }



    @Override
    public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
        //Ifscrolled at last then
        if (isLastItemDisplaying(recyclerView)) {
            //Calling the method getdata again
            getData();
        }
    }

But

public class Last_pics extends Fragment implements RecyclerView.OnScrollChangeListener{

needs min sdk 23.
How can I implement it without changing minimum sdk version?
Is there other ways?
Thanks

What I have tried:

implementing

RecyclerView.OnScrollChangeListener

for downloading sections of data from database? Is there other ways to doing it?