Answers for "flutter border radius circle"

round border container flutter

Container(
  decoration: BoxDecoration(
    border: Border.all(
      color: Colors.red[500],
    ),
    borderRadius: BorderRadius.all(Radius.circular(20))
  ),
  child: ...
)

make border rounded flutter

decoration: BoxDecoration(
  borderRadius: BorderRadius.circular(10)
),

flutter border radius

borderRadius: BorderRadius.all(Radius.circular(5.0))