DART

flutter tabbar

body: TabBarView(
          children: [
            Center(
              child: Text("It's cloudy here"),
            ),
            Center(
              child: Text("It's rainy here"),
            ),
            Center(
              child: Text("It's sunny here"),
            ),
          ],
        ),

flutter tabbar

appBar: AppBar(
          title: Text('TabBar'),
          bottom: TabBar(
            tabs: [
              Tab(
                icon: Icon(Icons.cloud_outlined),
              ),
              Tab(
                icon: Icon(Icons.beach_access_sharp),
              ),
              Tab(
                icon: Icon(Icons.brightness_5_sharp),
              ),
            ],
          ),
        ),

flutter tabbar

An example of Flutter Tabbar implementation is given here:
https://blog.logrocket.com/flutter-tabbar-a-complete-tutorial-with-examples/

tabbar flutter

indicatorSize