Flutter笔记12：IconButton图标按钮

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'IconButton图标按钮',
      home: Scaffold(
        appBar: AppBar(
          title: Text('IconButton图标按钮'),
        ),
        body: Center(
          child: Container(
            decoration: BoxDecoration(color: Colors.grey),
            width: 200.0,
            height: 200.0,
            child: IconButton(
              //位置（根据父容器决定自己的位置）
              alignment: AlignmentDirectional.centerStart,
              //颜色
              color: Colors.green,
              //大小
              iconSize: 48.0,
              padding: EdgeInsets.all(30),
              //水波纹颜色
              splashColor: Colors.blue,
              tooltip: '图标按钮',
              //图标
              icon: Icon(Icons.print),
              //点击事件
              onPressed: () {}),
          )
        ),
      )
    );
  }
}