Flutter动画搜索栏插件animated_search的使用
Flutter动画搜索栏插件animated_search的使用
安装
要安装此包,请在项目 pubspec.yaml
文件中添加以下依赖项:
dependencies:
animated_search: ^0.0.5
然后在终端中运行以下命令来安装该包:
$ pub get
或者使用 Flutter:
$ flutter pub get
使用示例代码
import 'package:animated_search/animated_search.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({super.key});
// This widget is the root of your application.
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const MyHomePage(title: 'Animated Search'),
);
}
}
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> {
final TextEditingController _textEditingController = TextEditingController();
String _searchText = '';
[@override](/user/override)
void dispose() {
_textEditingController.dispose();
super.dispose();
}
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
actions: const [
AnimatedSearch(
width: 1.width,
iconColor: Colors.red,
cursorColor: Colors.black,
decoration: InputDecoration(
hintText: 'hello',
hintStyle: TextStyle(color: Colors.yellow)
),
)
],
),
body: Center(
child: Column(
children: [
Padding(
padding: const EdgeInsets.all(1.padding),
child: AnimatedSearch(
textEditingController: _textEditingController,
onChanged: (String value) {
setState(() {
_searchText = value;
});
},
),
),
Text('Current search text: $_searchText'),
],
),
),// This trailing comma makes auto-formatting nicer for build methods.
);
}
}
更多关于Flutter动画搜索栏插件animated_search的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
1 回复
更多关于Flutter动画搜索栏插件animated_search的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
当然,下面是一个关于如何在Flutter项目中使用animated_search
插件来实现动画搜索栏的示例代码。这个插件提供了一种简单的方法来创建具有动画效果的搜索栏。
首先,你需要在你的pubspec.yaml
文件中添加animated_search
依赖:
dependencies:
flutter:
sdk: flutter
animated_search: ^x.y.z # 请替换为最新版本号
然后运行flutter pub get
来安装依赖。
接下来,你可以在你的Flutter应用中使用这个插件。以下是一个完整的示例代码:
import 'package:flutter/material.dart';
import 'package:animated_search/animated_search.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Animated Search Bar Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatefulWidget {
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
final TextEditingController _controller = TextEditingController();
final List<String> _suggestions = List.generate(20, (i) => "Suggestion $i");
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Animated Search Bar Demo'),
),
body: Padding(
padding: const EdgeInsets.all(16.0),
child: AnimatedSearchBar<String>(
controller: _controller,
suggestions: _suggestions,
onSearch: (query) {
// 这里处理搜索逻辑
print("Searching for: $query");
},
onSuggestionSelected: (suggestion) {
// 这里处理建议选中逻辑
print("Suggestion selected: $suggestion");
_controller.value = TextEditingValue(
text: suggestion,
selection: TextSelection.collapsed(offset: suggestion.length),
composing: TextRange.empty,
);
},
decoration: InputDecoration(
prefixIcon: Icon(Icons.search),
hintText: 'Search...',
border: OutlineInputBorder(),
),
),
),
);
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
}
在这个示例中:
AnimatedSearchBar
组件被用来创建一个具有动画效果的搜索栏。controller
属性用于控制文本输入。suggestions
属性提供了搜索建议的列表。onSearch
回调函数在用户提交搜索时被调用。onSuggestionSelected
回调函数在用户从建议列表中选择一个建议时被调用。decoration
属性用于自定义搜索栏的外观,比如前缀图标、提示文本和边框。
确保你已经正确安装了animated_search
插件,并且替换了pubspec.yaml
中的版本号x.y.z
为最新的版本号。这个示例代码提供了一个基本的框架,你可以根据自己的需求进一步定制和扩展。