TableLayout - Remove space between columns

TableLayout - Remove space between columns

I'm having a problem with the TableLayout.
First, take a look at the screenshot:

As you can see, there is a pretty big space in the middle of the
TableLayout. I don't know how to reduce the space in the middle, so that
the TableRows will have more Width to cover. And also, I want to reduce
the space between a TableRow and the one below it.
I'm adding the views to the TableLayout programmatically. Also, I've
already set the 'layout_weight' of the content of the TableRow to 1f:
TableRow tr = (TableRow) new TableRow(mTableLayout.getContext());
card.setLayoutParams(new TableRow.LayoutParams(0, 740, 1f));
tr.addView(card);
mTableLayout.addView(tr, params);
XML declaration of the TableLayout:
<TableLayout
android:id="@+id/tableLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:stretchColumns="1"
android:dividerPadding="0dp"
android:showDividers="none"
android:divider="@null">
</TableLayout>
How do I reduce the space in the middle of the TableLayout. And also, How
to reduce the space between a TableRow and the one below it.
Thank you upfront.