How to use

notifyAdapterItemRangeRemoved

method

in

com.mikepenz.fastadapter.FastAdapter

/**
 * wraps notifyItemRemoved
 *
 * @param position the global position
 */
public void notifyAdapterItemRemoved(int position) {
  notifyAdapterItemRangeRemoved(position, 1);
}

@Override
public void removeRange(int position, int itemCount, int preItemCount) {
  //global position to relative
  int length = mItems.size();
  //make sure we do not delete to many items
  int saveItemCount = Math.min(itemCount, length - position + preItemCount);
  for (int i = 0; i < saveItemCount; i++) {
    mItems.remove(position - preItemCount);
  }
  if (getFastAdapter() != null) {
    getFastAdapter().notifyAdapterItemRangeRemoved(position, saveItemCount);
  }
}

@Override
public void clear(int preItemCount) {
  int size = mItems.size();
  mItems.clear();
  if (getFastAdapter() != null) {
    getFastAdapter().notifyAdapterItemRangeRemoved(preItemCount, size);
  }
}

  @Override
  public boolean notify(FastAdapter fastAdapter, int newItemsCount, int previousItemsCount, int itemsBeforeThisAdapter) {
    //now properly notify the adapter about the changes
    if (newItemsCount > previousItemsCount) {
      if (previousItemsCount > 0) {
        fastAdapter.notifyAdapterItemRangeChanged(itemsBeforeThisAdapter, previousItemsCount);
      }
      fastAdapter.notifyAdapterItemRangeInserted(itemsBeforeThisAdapter + previousItemsCount, newItemsCount - previousItemsCount);
    } else if (newItemsCount > 0 && newItemsCount < previousItemsCount) {
      fastAdapter.notifyAdapterItemRangeChanged(itemsBeforeThisAdapter, newItemsCount);
      fastAdapter.notifyAdapterItemRangeRemoved(itemsBeforeThisAdapter + newItemsCount, previousItemsCount - newItemsCount);
    } else if (newItemsCount == 0) {
      fastAdapter.notifyAdapterItemRangeRemoved(itemsBeforeThisAdapter, previousItemsCount);
    } else {
      //this condition should practically never happen
      fastAdapter.notifyAdapterDataSetChanged();
    }
    return false;
  }
};

  @Override
  public boolean notify(FastAdapter fastAdapter, int newItemsCount, int previousItemsCount, int itemsBeforeThisAdapter) {
    //now properly notify the adapter about the changes
    if (newItemsCount > previousItemsCount) {
      if (previousItemsCount > 0) {
        fastAdapter.notifyAdapterItemRangeChanged(itemsBeforeThisAdapter, previousItemsCount);
      }
      fastAdapter.notifyAdapterItemRangeInserted(itemsBeforeThisAdapter + previousItemsCount, newItemsCount - previousItemsCount);
    } else if (newItemsCount > 0) {
      fastAdapter.notifyAdapterItemRangeChanged(itemsBeforeThisAdapter, newItemsCount);
      if (newItemsCount < previousItemsCount) {
        fastAdapter.notifyAdapterItemRangeRemoved(itemsBeforeThisAdapter + newItemsCount, previousItemsCount - newItemsCount);
      }
    } else if (newItemsCount == 0) {
      fastAdapter.notifyAdapterItemRangeRemoved(itemsBeforeThisAdapter, previousItemsCount);
    } else {
      //this condition should practically never happen
      fastAdapter.notifyAdapterDataSetChanged();
    }
    return false;
  }
};

@Override
public void onRemoved(int position, int count) {
  adapter.getFastAdapter().notifyAdapterItemRangeRemoved(adapter.getFastAdapter().getPreItemCountByOrder(adapter.getOrder()) + position, count);
}