border buttom flutter code example
Example 1: flutter button border radius
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(18.0),
side: BorderSide(color: Colors.red)
),
Example 2: A circuler border button in flutter
Padding( padding: EdgeInsets.only(left: 150.0, right: 0.0), child: RaisedButton( textColor: Colors.white, color: Colors.black, child: Text("Search"), onPressed: () {}, shape: new RoundedRectangleBorder( borderRadius: new BorderRadius.circular(30.0), ), ),)