Flutter Container 圆角

 import 'package:flutter/material.dart';

class TestPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Material(
      child: Container(
        decoration: BoxDecoration(
          border: Border.all(color: Colors.red, width: 5.0),
          // 设置圆角
          borderRadius: BorderRadius.all(Radius.circular(12.0))
        ),
        child: Text('这是一个圆角带边框的容器'),
      )
    );
  }
}