Crash while switching rows using the adapter which subcalsses BaseDataAdaptiveTableLayoutAdapter

My code is as follows.

static class MyAdapter extends
        BaseDataAdaptiveTableLayoutAdapter<MyAdapter.ViewHolder> {
    @Override
    protected Object[][] getItems() {
        return cells;
    }

    @Override
    public void onBindViewHolder(ViewHolder viewHolder, int row, int column) {
        viewHolder.text.setText(cells[row][column]);
    }

    // other codes...
}

It works well when dragging is not involved. When switching columns, the app doesn't crash. But if rows are switched, it crashes!

I found the following code in the library:

void switchTwoRows(int rowIndex, int rowToIndex) {
    for (int i = 0; i < getItems().length; i++) {
        Object cellData = getItems()[rowToIndex][i];
        getItems()[rowToIndex][i] = getItems()[rowIndex][i];
        getItems()[rowIndex][i] = cellData;
    }
}

I think getItems().length should not be used here. It just gives number of rows of my data... It should be something like getColumnCount() - 1. Is it my misunderstanding? Any comment is appreciate.

Cleveroad / AdaptiveTableLayout

Crash while switching rows using the adapter which subcalsses BaseDataAdaptiveTableLayoutAdapter #20