• • 背景：**

我在探索flutter和dart，而且我做app只是为了自己的乐趣。

• • 我的目标**

我想做一个愚蠢的应用程序，每天显示一个随机的图标（就像一天中的一句话）。
但是我不知道现在该怎么做，在所有的例子中，代码都直接引用了IconData字段，这些字段是在各自的类中声明的，比如FontAwesomeIcons或Icons。
这些字段被声明为static const，访问这些字段的最正确方法是什么，以便说 * 把它们放在一个列表中，我可以随机选择一个索引 *？

library font_awesome_flutter;

import 'package:flutter/widgets.dart';
import 'package:font_awesome_flutter/icon_data.dart';

// THIS FILE IS AUTOMATICALLY GENERATED!

class FontAwesomeIcons {
  static const IconData fiveHundredPx = const IconDataBrands(0xf26e);
  static const IconData accessibleIcon = const IconDataBrands(0xf368);
  static const IconData accusoft = const IconDataBrands(0xf369);

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/widgets.dart';

/// Identifiers for the supported material design icons.
///
/// Use with the [Icon] class to show specific icons.
///
/// Icons are identified by their name as listed below.
///
/// To use this class, make sure you set `uses-material-design: true` in your
/// project's `pubspec.yaml` file in the `flutter` section. This ensures that
/// the MaterialIcons font is included in your application. This font is used to
/// display the icons. For example:
///
/// ```yaml
/// name: my_awesome_application
/// flutter:
///   uses-material-design: true
/// ```
///
/// See also:
///
///  * [Icon]
///  * [IconButton]
///  * [design.google.com/icons](https://design.google.com/icons/)
class Icons {
  Icons._();

  // Generated code: do not hand-edit.
  // See https://github.com/flutter/flutter/wiki/Updating-Material-Design-Fonts
  // BEGIN GENERATED

  /// <i class="material-icons md-36">360</i> &#x2014; material icon named "360".
  static const IconData threesixty = IconData(0xe577, fontFamily: 'MaterialIcons');

  /// <i class="material-icons md-36">3d_rotation</i> &#x2014; material icon named "3d rotation".
  static const IconData threed_rotation = IconData(0xe84d, fontFamily: 'MaterialIcons');