How to make single table cell to be selected

In my scanerio:

there is a table, I want to let only one cell of this table to be selected, neither the whole row not the whole column,

It should look like only this single cell has the background color different from all other cells in this table.

I have tried to set the background of the celleditor as the value "marked1", my table celleditor is a TextView.

but the selected background color can not cover the whole table cell, it seems there is some cellpadding around the TableCellEdtior. I didn't find any place to set the cellpadding for the TableCellEditor.

Is there any solution, please kindly help me.