@Override
 public void onBindViewHolder(PreferenceViewHolder view) {
   super.onBindViewHolder(view);
   mPreviewView = view.findViewById(R.id.preview_text);
   setNumberViewValue(mPreviewView, mValue);
 }
 @Override
 public void onBindViewHolder(PreferenceViewHolder holder) {
   super.onBindViewHolder(holder);
   mView = holder.itemView;
   setPreviewColor();
 }