图标 Icon

Icon 组件用来显示可缩放的图标，不会像图片一样失真，还能设置颜色。

定义

  const Icon(

    // IconData 图标数据
    this.icon, {
    Key? key,

    // 尺寸
    this.size,

    // 颜色
    this.color,

    // 方向
    this.textDirection,

    this.semanticLabel,
  }) : super(key: key);

开启 pubspec.yaml

# The following section is specific to Flutter.
flutter:
  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

icon 预览

https://fonts.google.com/icons?selected=Material+Icons

示例

代码

import 'package:flutter/material.dart';

class IconPage extends StatelessWidget {
  const IconPage({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return const Scaffold(
      body: Icon(
        Icons.campaign,
        size: 200,
        color: Colors.amber,
      ),
    );
  }
}

输出

苹果 Icon

苹果风格 icon 需要用 CupertinoIcons 对象来访问

https://api.flutter.dev/flutter/cupertino/CupertinoIcons-class.html

Icon 地图