How to resize a flutter table to take the whole available space?

Question

I have a Flutter table that is currently being rendered in the Appbar title as follows:

My question is how to make the table take the maximum width and height of the AppBar?

The codes for defining the table in the Appbar is as follows:

Scaffold(
      appBar: AppBar(
        title: Table(
          border: TableBorder.all(),
          children: [
            TableRow(
              children: <Widget>[
                TableCell(
                  verticalAlignment: TableCellVerticalAlignment.middle,
                  child: Center(child: Text("GPS"),),
                ),
                TableCell(
                  verticalAlignment: TableCellVerticalAlignment.middle,
                  child: Center(child: Text("GPS"),),
                ),
                TableCell(
                  verticalAlignment: TableCellVerticalAlignment.middle,
                  child: Center(child: Text("GPS"),),
                ),
                TableCell(
                  verticalAlignment: TableCellVerticalAlignment.middle,
                  child: Center(child: Text("GPS"),),
                )
              ],
            )
          ],
        ),
      ))

Below is what I want to achieve:

Answer 1

Firstly, provide height on TableCell,

TableCell(
  verticalAlignment: TableCellVerticalAlignment.middle,
  child: Container(
    height: kToolbarHeight,
    alignment: Alignment.center,
    child: Text("GPS"),
  ),
),

Option 1

You can use leadingWidth: 0,titleSpacing: 0, on AppBar.

AppBar(
  leadingWidth: 0,
  titleSpacing: 0,
  title: myTable(),
),

Option 1 rendering:

Option 2

Also I think you will like using PreferredSize and customize the way you like

appBar: PreferredSize(
  preferredSize: const Size.fromHeight(kToolbarHeight),
  child: Container(
    height: kToolbarHeight,
    color: Colors.blue,
    child: myTable(),
  ),
),

Option 2 rendering:

If you like to have the border, you can wrap your Table with Padding

title: Padding(
  padding: const EdgeInsets.all(1),
  child: myTable(),
),