flutter curved edges button code example

Example 1: rounded button flutter

FlatButton(
              color: Colors.red,
              shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.circular(18.0)),
              child: new Text('round button'),
              onPressed: () {},
            ),

Example 2: how to set button radius in flutter

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