disable swiping tabs in TabBar flutter

you can achieve that by changing how the page view should respond to user input using the physics property. and we have a NeverScrollableScrollPhysics for that purpose so just change physics to that like this :

TabBarView(
        physics: NeverScrollableScrollPhysics(),
        controller: tabcontroler,
        children: <Widget>[
          Container(color: Colors.red),
          Container(color: Colors.green),
          Container(color: Colors.blue),
        ],
      ),