Flutter文本解码特效插件decoding_text_effect的使用

Flutter文本解码特效插件decoding_text_effect的使用

在Flutter中,如果你想为你的应用添加一些酷炫的文字解码特效,可以使用decoding_text_effect插件。这个插件包含一个名为DecodingTextEffect的小部件,它提供了多种解码效果。

使用效果展示

插件信息

平台支持

  • 平台: Flutter

包版本

  • 包版本: Pub Package

许可证

  • 许可证: License: BSD

安装

1. 添加依赖

在你的项目pubspec.yaml文件中添加以下依赖:

dependencies:
  decoding_text_effect: ^1.0.0

2. 安装依赖

通过命令行安装依赖:

$ flutter pub get

3. 导入包

在Dart代码中导入:

import 'package:decoding_text_effect/decoding_text_effect.dart';

文档说明

DecodingTextEffect的效果会在以下两种情况下触发:

  1. 小部件首次渲染时。
  2. originalString参数的值发生变化时。

以下是小部件的构造函数定义:

DecodingTextEffect(
   this.originalString, {
   @required this.decodeEffect,
   Key key,
   this.textStyle,
   this.textAlign,
   this.refreshDuration,
   this.eachCount = 5,
   this.onTap,
   this.onFinished,
  })  : assert(
         originalString != null,
         'A non-null String must be provided to a Decoding Text Effect Widget.',
        ),
        super(key: key);

使用示例

示例代码

List<String> myText = [
   'Decoding Text\nEffect',
   'Welcome to\nthe Dart Side!',
   'I have 50\nwatermelons',
   'Quick Maths,\n2 + 2 = 4'
];

// 1. DecodeEffect.fromStart
Container(
   height: 200,
   width: 350,
   color: Colors.pink[100],
   padding: EdgeInsets.all(50),
   child: DecodingTextEffect(
      myText[index],
      decodeEffect: DecodeEffect.fromStart,
      textStyle: TextStyle(fontSize: 30),
   ),
),

// 2. DecodeEffect.fromEnd
Container(
   height: 200,
   width: 350,
   color: Colors.yellow[100],
   padding: EdgeInsets.all(50),
   child: DecodingTextEffect(
      myText[index],
      decodeEffect: DecodeEffect.fromEnd,
      textStyle: TextStyle(fontSize: 30),
   ),
),

// 3. DecodeEffect.toMiddle
Container(
   height: 200,
   width: 350,
   color: Colors.green[100],
   padding: EdgeInsets.all(50),
   child: DecodingTextEffect(
      myText[index],
      decodeEffect: DecodeEffect.to_middle,
      textStyle: TextStyle(fontSize: 30),
   ),
),

// 4. DecodeEffect.random
Container(
   height: 200,
   width: 350,
   color: Colors.purple[100],
   padding: EdgeInsets.all(50),
   child: DecodingTextEffect(
      myText[index],
      decodeEffect: DecodeEffect.random,
      textStyle: TextStyle(fontSize: 30),
   ),
),

// 5. DecodeEffect.all
Container(
   height: 200,
   width: 350,
   color: Colors.blue[100],
   padding: EdgeInsets.all(50),
   child: DecodingTextEffect(
      myText[index],
      decodeEffect: DecodeEffect.all,
      textStyle: TextStyle(fontSize: 30),
   ),
),

参数说明

  • refreshDuration: 可选参数,默认值为Duration(milliseconds: 60)。该值越短,效果越快,因此解码效果持续时间越短。refreshDuration也是两次连续setState()调用之间的时间间隔。
  • eachCount: 可选参数,默认值为5。这是在显示原始字符之前随机显示的字符数量,然后继续解码下一个字符,此循环重复直到效果完成。

完整示例代码

// Copyright (c) 2020, Aadarsh Patel
// All rights reserved.
// This source code is licensed under the BSD-style license found in the LICENSE file in the root directory of this source tree.

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

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  [@override](/user/override)
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int index = 0;

  List<String> myText = [
    'Decoding Text\nEffect',
    'Welcome to\nthe Dart Side!',
    'I have 50\nwatermelons',
    'Quick Maths,\n2 + 2 = 4'
  ];

  void changeText() {
    setState(() {
      index++;
      if (index == myText.length) index = 0;
    });
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Decoding Text Effect Example'),
      ),
      body: SingleChildScrollView(
        child: Container(
          width: MediaQuery.of(context).size.width,
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              SizedBox(height: 50),
              Text(
                'decodeEffect: DecodeEffect.fromStart',
                style: TextStyle(fontSize: 21),
              ),
              SizedBox(height: 8),
              Container(
                height: 200,
                width: 350,
                color: Colors.pink[100],
                padding: EdgeInsets.all(50),
                child: DecodingTextEffect(
                  myText[index],
                  decodeEffect: DecodeEffect.fromStart,
                  textStyle: TextStyle(fontSize: 30),
                ),
              ),
              SizedBox(height: 100),
              Text(
                'decodeEffect: DecodeEffect.fromEnd',
                style: TextStyle(fontSize: 21),
              ),
              SizedBox(height: 8),
              Container(
                height: 200,
                width: 350,
                color: Colors.yellow[100],
                padding: EdgeInsets.all(50),
                child: DecodingTextEffect(
                  myText[index],
                  decodeEffect: DecodeEffect.fromEnd,
                  textStyle: TextStyle(fontSize: 30),
                ),
              ),
              SizedBox(height: 100),
              Text(
                'decodeEffect: DecodeEffect.toMiddle',
                style: TextStyle(fontSize: 21),
              ),
              SizedBox(height: 8),
              Container(
                height: 200,
                width: 350,
                color: Colors.green[100],
                padding: EdgeInsets.all(50),
                child: DecodingTextEffect(
                  myText[index],
                  decodeEffect: DecodeEffect.toMiddle,
                  textStyle: TextStyle(fontSize: 30),
                ),
              ),
              SizedBox(height: 100),
              Text(
                'decodeEffect: DecodeEffect.random',
                style: TextStyle(fontSize: 21),
              ),
              SizedBox(height: 8),
              Container(
                height: 200,
                width: 350,
                color: Colors.purple[100],
                padding: EdgeInsets.all(50),
                child: DecodingTextEffect(
                  myText[index],
                  decodeEffect: DecodeEffect.random,
                  textStyle: TextStyle(fontSize: 30),
                ),
              ),
              SizedBox(height: 100),
              Text(
                'decodeEffect: DecodeEffect.all',
                style: TextStyle(fontSize: 21),
              ),
              SizedBox(height: 8),
              Container(
                height: 200,
                width: 350,
                color: Colors.blue[100],
                padding: EdgeInsets.all(50),
                child: DecodingTextEffect(
                  myText[index],
                  decodeEffect: DecodeEffect.all,
                  textStyle: TextStyle(fontSize: 30),
                ),
              ),
              SizedBox(height: 100),
            ],
          ),
        ),
      ),
      floatingActionButton: FloatingActionButton(
        child: Icon(Icons.refresh),
        onPressed: changeText,
      ),
    );
  }
}

更多关于Flutter文本解码特效插件decoding_text_effect的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html

1 回复

更多关于Flutter文本解码特效插件decoding_text_effect的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


decoding_text_effect 是一个用于在 Flutter 中实现文本解码特效的插件。它可以模拟文本从乱码逐渐解码为可读文本的效果,类似于电影中常见的黑客场景。以下是如何使用 decoding_text_effect 插件的详细步骤:

1. 添加依赖

首先,你需要在 pubspec.yaml 文件中添加 decoding_text_effect 插件的依赖:

dependencies:
  flutter:
    sdk: flutter
  decoding_text_effect: ^1.0.0  # 请检查最新版本

然后运行 flutter pub get 来获取依赖。

2. 导入插件

在你的 Dart 文件中导入 decoding_text_effect 插件:

import 'package:decoding_text_effect/decoding_text_effect.dart';

3. 使用 DecodingTextEffect 组件

DecodingTextEffect 是一个可以显示解码特效的组件。你可以通过设置不同的参数来定制效果。

以下是一个简单的示例:

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

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Decoding Text Effect Example'),
        ),
        body: Center(
          child: DecodingTextEffect(
            text: 'Hello, World!',
            textStyle: TextStyle(fontSize: 24, fontWeight: FontWeight.bold),
            decodingSpeed: Duration(milliseconds: 100),
            decodingCharacters: 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789',
            onFinished: () {
              print('Decoding finished!');
            },
          ),
        ),
      ),
    );
  }
}
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