How to give separated border/container to each tab?

[ShiyanaSam]

How to give separated border/container to each tab?

[bemain]

I'm not entirely sure what your intended behaviour is. If you want to add a border on each side of the selected tab you can do so by using the following code:

SegmentedTabControl(
    indicatorDecoration: BoxDecoration(
        border: const Border.symmetric(vertical: BorderSide()),
    ),
    ...
)

You can also add borders to the sides of the entire bar by changing the barDecoration:

SegmentedTabControl(
    barDecoration: BoxDecoration(
        border: const Border.symmetric(vertical: BorderSide()),
    ),
    ...
)

If you want to add borders between each tab, I'm not able to find a way to do that at the moment.