BoxDecoration Example

boxdecoration.dart

import 'package:flutter/material.dart';



void main() => runApp(MeineApp());

class MeineApp extends StatelessWidget{
  @override
  Widget build(BuildContext context){
    return MaterialApp(
      title: "Beispiel",
      home: new Scaffold(
        body: Center(
          child: new Container(
            width: 100.0,
            height: 100.0,
            child: Center(child: new Text("Hello")),
            decoration: new BoxDecoration(
              border: new Border.all(
                color:Colors.black,
                width: 2.0,
                style: BorderStyle.solid,
              ),
              color: Colors.blue,
              borderRadius: BorderRadius.all(
                new Radius.circular(
                  10.0
                )
              ),
            ),
          ),
        ),
      ),
    );
  }
}