Flutter字体图标插件json_dynamic_widget_plugin_font_awesome的使用

Flutter字体图标插件json_dynamic_widget_plugin_font_awesome的使用

目录

• 实时示例
• 简介
• 使用插件

实时示例

• Web

简介

该插件用于 JSON Dynamic Widget，通过 font_awesome_flutter 包来支持 Font Awesome 字体图标。

使用插件

首先，确保你已经安装了 json_dynamic_widget_plugin_font_awesome 插件。在你的 pubspec.yaml 文件中添加以下依赖：

dependencies:
  json_dynamic_widget_plugin_font_awesome: ^latest_version

然后，在你的项目中初始化并注册插件。以下是一个完整的示例：

import 'dart:convert';
import 'package:font_awesome_flutter_named/font_awesome_flutter_named.dart';
import 'package:json_dynamic_widget/json_dynamic_widget.dart';
import 'package:json_dynamic_widget_plugin_font_awesome/json_dynamic_widget_plugin_font_awesome.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart' show rootBundle;

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  // 初始化日志记录器
  Logger.root.onRecord.listen((record) {
    debugPrint('${record.level.name}: ${record.time}: ${record.message}');
    if (record.error != null) {
      debugPrint('${record.error}');
    }
    if (record.stackTrace != null) {
      debugPrint('${record.stackTrace}');
    }
  });

  // 创建全局导航键
  final navigatorKey = GlobalKey<NavigatorState>();

  // 获取JsonWidgetRegistry实例
  final registry = JsonWidgetRegistry.instance;
  JsonFontAwesomePluginRegistrar.registerDefaults(registry: registry);

  // 设置导航键
  registry.navigatorKey = navigatorKey;

  // 从assets加载Json数据
  final data = JsonWidgetData.fromDynamic(
    json.decode(await rootBundle.loadString('assets/pages/font_awesome.json')),
  );

  // 设置图标名称列表
  registry.setValue('icons', faIconNameMapping.keys);

  // 启动应用
  runApp(
    MaterialApp(
      debugShowCheckedModeBanner: false,
      home: ExampleWidgetPage(
        data: data,
      ),
      theme: ThemeData.light(),
    ),
  );
}

// 定义一个示例页面
class ExampleWidgetPage extends StatelessWidget {
  const ExampleWidgetPage({
    super.key,
    required this.data,
  });

  final JsonWidgetData data;

  [@override](/user/override)
  Widget build(BuildContext context) => data.build(context: context);
}

在这个示例中，我们首先导入了必要的包，并初始化了日志记录器。接着，我们创建了一个全局导航键，并获取了 JsonWidgetRegistry 的实例。然后，我们注册了 Font Awesome 插件，并设置了导航键。最后，我们从 assets 中加载 JSON 数据，并将其传递给 ExampleWidgetPage。

示例代码

import 'dart:convert';

import 'package:font_awesome_flutter_named/font_awesome_flutter_named.dart';
import 'package:json_dynamic_widget/json_dynamic_widget.dart';
import 'package:json_dynamic_widget_plugin_font_awesome/json_dynamic_widget_plugin_font_awesome.dart';
import 'package:logging/logging.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  Logger.root.onRecord.listen((record) {
    debugPrint('${record.level.name}: ${record.time}: ${record.message}');
    if (record.error != null) {
      debugPrint('${record.error}');
    }
    if (record.stackTrace != null) {
      debugPrint('${record.stackTrace}');
    }
  });

  final navigatorKey = GlobalKey<NavigatorState>();

  final registry = JsonWidgetRegistry.instance;
  JsonFontAwesomePluginRegistrar.registerDefaults(registry: registry);

  registry.navigatorKey = navigatorKey;

  final data = JsonWidgetData.fromDynamic(
    json.decode(await rootBundle.loadString('assets/pages/font_awesome.json')),
  );

  registry.setValue('icons', faIconNameMapping.keys);

  runApp(
    MaterialApp(
      debugShowCheckedModeBanner: false,
      home: ExampleWidgetPage(
        data: data,
      ),
      theme: ThemeData.light(),
    ),
  );
}

class ExampleWidgetPage extends StatelessWidget {
  const ExampleWidgetPage({
    super.key,
    required this.data,
  });

  final JsonWidgetData data;

  [@override](/user/override)
  Widget build(BuildContext context) => data.build(context: context);
}