Space Between RecyclerView. Sticky to edge for 0 and 1 position of recycler view

SpacingBetweenRecyclerView.java

import android.graphics.Rect;
import android.support.v7.widget.RecyclerView;
import android.view.View;

/**
 * Created by NaRan on 02,May,2018.
 * Copyright (c) inGrails Pvt. Ltd. All rights reserved.
 * [email protected]
 **/


public class SpacingBetweenRecyclerView extends RecyclerView.ItemDecoration {

    private int spanCount;
    private int spacing;
    private boolean includeEdge;
    private int headerNum;

    public SpacingBetweenRecyclerView(int spanCount, int spacing, boolean includeEdge, int headerNum) {
        this.spanCount = spanCount;
        this.spacing = spacing;
        this.includeEdge = includeEdge;
        this.headerNum = headerNum;
    }


    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        int position = parent.getChildAdapterPosition(view) - headerNum; // item position

        if (position >= 0) {
            int column = position % spanCount; // item column

            if (includeEdge) {
                outRect.left = spacing - column * spacing / spanCount; // spacing - column * ((1f / spanCount) * spacing)
                outRect.right = (column + 1) * spacing / spanCount; // (column + 1) * ((1f / spanCount) * spacing)

                if (position < spanCount) { // top edge
                    outRect.top = spacing;
                }
                outRect.bottom = spacing; // item bottom
            } else {
                outRect.left = column * spacing / spanCount; // column * ((1f / spanCount) * spacing)
                outRect.right = spacing - (column + 1) * spacing / spanCount; // spacing - (column + 1) * ((1f /    spanCount) * spacing)
                if (position >= spanCount) {
                    outRect.top = spacing; // item top
                }
            }
        } else {

            /**
             * adapter position you want to sticky to edge {MATCH_PARENT}
             * here we are setting 0 and 1 index of recycler view
             **/

            if (parent.getChildAdapterPosition(view) == 0 || parent.getChildAdapterPosition(view) == 1) {
                outRect.left = 0;
                outRect.right = 0;
                outRect.top = 0;
                outRect.bottom = 0;
            } else {
                outRect.left = 16;
                outRect.right = 16;
                outRect.top = 16;
                outRect.bottom = 16;
            }


        }
    }
}

Call it as:

recyclerView.addItemDecoration(new EqualSpacingItemDecoration(2,16,true,22));