How to align `TabBar` to the left with a custom starting position

Question

I'm currently working on a Flutter app in which I'd like to display the TabBar starting on the left. If an AppBar has a leading property I'd like to indent the starting position of the TabBar to match it. Then on scroll, it would still pass through and not leave white area.

This is the code that I have that currently displays a TabBar in the middle of the AppBar:

AppBar(
  bottom: TabBar(
    isScrollable: true,
    tabs: state.sortedStreets.keys.map(
      (String key) => Tab(
        text: key.toUpperCase(),
      ),
    ).toList(),
  ),
);

Answer 1

You can use Align Widget to align the tabs of the TabBar to left, which will be the child of PreferredSize.

This worked for me:

  bottom: PreferredSize(
    preferredSize: Size.fromHeight(40),
    ///Note: Here I assigned 40 according to me. You can adjust this size acoording to your purpose.
    child: Align(
      alignment: Alignment.centerLeft,
      child: TabBar(
        isScrollable: true,
        tabs: state.sortedStreets.keys.map(
          (String key) => Tab(
              text: key.toUpperCase(),
          ),
        ).toList(),
      ),
    ),
  ),

In case you only need TabBar in body you can remove the PreferredSize Widget.