game_board_layout.dart

 appBar:  AppBar(
          title:  Text("Tic Tac Toe"),
        ),
        body:  Column(
          mainAxisAlignment: MainAxisAlignment.start,
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: <Widget>[
             Expanded(
              child:  GridView.builder(
                padding: const EdgeInsets.all(10.0),
                gridDelegate:  SliverGridDelegateWithFixedCrossAxisCount(
                    crossAxisCount: 3,
                    childAspectRatio: 1.0,
                    crossAxisSpacing: 9.0,
                    mainAxisSpacing: 9.0),
                itemCount: buttonsList.length,
                itemBuilder: (context, i) => SizedBox(
                  width: 100,
                  height: 100,
                  child:  RaisedButton(
                    padding: const EdgeInsets.all(8.0),
                    onPressed: buttonsList[i].enabled ? () {
                      //TODO play(i)
                    } : null,
                    child:  Text(
                      buttonsList[i].text,
                      style:  TextStyle(color: Colors.white, fontSize: 20.0),
                    ),
                    color: buttonsList[i].bg,
                    disabledColor: buttonsList[i].bg,
                  ),
                ),
              ),
            ),
            Text(
              gameOver == true ? "${activePlayer.playerHandle} Won" : "",
              style: TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
            ),
            Padding(
              padding: EdgeInsets.only(left: 20.0, bottom: 40.0),
              child: Text(
                gameOver == true ? "i am a BUG fix me !!" : "",
                style: TextStyle(fontSize: 10, fontWeight: FontWeight.bold,color: Colors.red),
              ),
            ),
             RaisedButton(
              onPressed: () => {
                //TODO restart()
              },
              child:  Text(
                "Restart",
                style:  TextStyle(fontSize: 20.0, color: Colors.white),
              ),
              padding: const EdgeInsets.all(20.0),
            )
          ],
        )