Answers for "round corner button in flutter"

rounded raisedbutton in flutter

RaisedButton(
                onPressed: () {},
                color: Colors.amber,
                shape: RoundedRectangleBorder(
                    borderRadius: BorderRadius.circular(10)),
                child: Text("Click This"),
              )

how to set button radius in flutter

RaisedButton(  shape: StadiumBorder(),  onPressed: () {},  child: Text("Button"),)