chemickypes

import java.util.concurrent.TimeUnit;

import io.reactivex.Observer;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.schedulers.Schedulers;

/**
 * Created by Angelo Moroni on 27/04/17.
 */

chemickypes

  ...
  View newf = findFirstVisibleItem();
  if(!newf.equals(f) ) {
    f = newf;

    for (int i = 0; i < getChildCount(); i++) {
      View v = getChildAt(i);
      v.setAlpha(v.equals(f)?1f:0.5f);
    }
  }

chemickypes

...
  getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                try {

                    getViewTreeObserver().removeGlobalOnLayoutListener(this);
                    int w = getWidth();
                    addItemDecoration(new EndOffsetDecoration(w - 50));
                }catch (Exception e){

chemickypes

...    
    @Override
    public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
        super.getItemOffsets(outRect, view, parent, state);
        int dataSize = state.getItemCount();
        int position = parent.getChildAdapterPosition(view);
        if (dataSize > 0 && position == dataSize - 1) {
            outRect.set(0, 0, mEndOffset, 0);
        } else {
            outRect.set(0, 0, 0, 0);