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
许可证
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:
- 小部件首次渲染时。
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
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!');
},
),
),
),
);
}
}