hide show view with scrolling recyclerview

HidingScrollListener

package com.daimajia.slider.library;

import android.support.v7.widget.RecyclerView;

/**
 * Created by Rezaiyan on 9/18/2017.
 */

public abstract class HidingScrollListener extends RecyclerView.OnScrollListener {
    private static final int HIDE_THRESHOLD = 20;
    private int scrolledDistance = 0;
    private boolean controlsVisible = true;

    @Override
    public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
        super.onScrolled(recyclerView, dx, dy);

        if (scrolledDistance > HIDE_THRESHOLD && controlsVisible) {
            onHide();
            controlsVisible = false;
            scrolledDistance = 0;
        } else if (scrolledDistance < -HIDE_THRESHOLD && !controlsVisible) {
            onShow();
            controlsVisible = true;
            scrolledDistance = 0;
        }

        if((controlsVisible && dy>0) || (!controlsVisible && dy<0)) {
            scrolledDistance += dy;
        }
    }

    public abstract void onHide();
    public abstract void onShow();

}

UsableMethods

private void ListScroller(){
        recyclerView.setOnScrollListener(new HidingScrollListener() {
            @Override
            public void onHide() {
                hideSearchBar();
            }

            @Override
            public void onShow() {
                showSearchBar();
            }
        });
}


private void hideViews() {
  mToolbar.animate().translationY(-mToolbar.getHeight()).setInterpolator(new AccelerateInterpolator(2));
  
  FrameLayout.LayoutParams lp = (FrameLayout.LayoutParams) mFabButton.getLayoutParams();
  int fabBottomMargin = lp.bottomMargin;
  mFabButton.animate().translationY(mFabButton.getHeight()+fabBottomMargin).setInterpolator(new AccelerateInterpolator(2)).start();
}

private void showViews() {
  mToolbar.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2));
  mFabButton.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2)).start();
}