Flutter富文本渲染插件sequence_aware_rich_text_renderer的使用

Flutter富文本渲染插件sequence_aware_rich_text_renderer的使用

sequence-aware-rich-text-renderer 是一个允许你通过指定特定段落或字符来定制其样式，从而将富文本分解并自定义某些部分的 RichText 小部件。该插件适用于需要对文本进行动态样式调整或持久化的情况。

特性

• RichTextWidget。
• 序列JSON序列化以实现动态样式和持久化。

开始使用

在你的 Flutter 项目中添加依赖：

flutter pub add sequence-aware-rich-text-renderer

使用示例

以下是如何使用该插件提供的小部件来解决问题或实现预期效果的示例。

示例代码

import 'package:flutter/material.dart';
import 'package:sequence_aware_rich_text_renderer/sequence_aware_rich_text_renderer.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Sequence Aware Rich Text Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
        fontFamily: 'DMSans',
      ),
      home: const MyHomePage(title: 'Sequence Aware Rich Text Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  [@override](/user/override)
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: SingleChildScrollView(
          physics: const BouncingScrollPhysics(),
          child: Padding(
            padding: const EdgeInsets.all(40),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                RichText(
                  text: const TextSpan(
                    text:
                        "Rendered with RichText widget : This text is styled with a custom font that doesn't support the ₦ sign.\n"
                        "We want to smartly split the provided text into text spans in a RichText widget and style appropriately so that the ₦ will be properly rendered.",
                    style: TextStyle(
                      color: Colors.black,
                      fontFamily: 'DMSans',
                    ),
                  ),
                ),
                const SizedBox(height: 40),
                const SequenceAwareRichText(
                  "Rendered with SequenceAwareRichText widget: This text is styled with a custom font that doesn't support the ₦ sign.\n"
                  "We want to smartly split the provided text into text spans in a RichText widget and style appropriately so that the ₦ will be properly rendered.",
                  sequences: [
                    Sequence(
                      '₦',
                      style: TextStyle(
                        color: Colors.red,
                      ),
                    ),
                    Sequence(
                      'widget',
                      style: TextStyle(
                        color: Colors.blue,
                      ),
                    ),
                  ],
                  style: TextStyle(
                    color: Colors.black,
                    fontFamily: 'DMSans',
                  ),
                )
              ],
            ),
          ),
        ),
      ),
    );
  }
}