第11章组件装饰和视觉效果-DecoratedBox装饰盒子-边框阴影处理

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import 'package:flutter/material.dart';

class LayoutDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text('BoxDecoration装饰盒子-边框阴影示例'),
      ),
      body: new Center(
        child: Container(
          width: 300.0,
          height: 300.0,
          decoration: BoxDecoration(
            color: Colors.white,
            //边框阴影效果
            boxShadow: [
              new BoxShadow(
                color: Colors.grey, //阴影颜色
                blurRadius: 8.0, //模糊值
                spreadRadius: 8.0, //扩展阴影半径
                offset: Offset(-1.0, 1.0), //x/y方向偏移量
              ),
            ],
          ),
          child: Text(
            'BoxShadow阴影效果',
            style: TextStyle(
              color: Colors.black,
              fontSize: 28.0,
            ),
          ),
        ),
      ),
    );
  }
}

void main() {
  runApp(
    new MaterialApp(
      title: 'BoxDecoration装饰盒子-边框阴影示例',
      home: new LayoutDemo(),
    ),
  );
}

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@作者: 亢少军