Flutter搜索功能插件mysearch的使用
Flutter搜索功能插件mysearch的使用
mysearch 是一个用于在 Flutter 应用中实现搜索功能的插件。它允许用户通过输入关键词来快速查找数据，并以列表的形式展示搜索结果。
获取开始
这个项目是一个起点，用于创建一个 Flutter 插件包，该插件包包含 Android 和/或 iOS 的平台特定实现代码。
如果你需要帮助开始使用 Flutter，可以查看 Flutter 官方文档，其中提供了教程、示例、移动开发指南以及完整的 API 参考。
使用示例
以下是一个完整的示例代码，展示了如何在 Flutter 中使用 mysearch 插件实现搜索功能。
示例代码
// example/lib/main.dart
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:mysearch/mysearch.dart';
import 'package:mysearch/model.dart';
void main() => runApp(const MyMaterialApp());
class MyMaterialApp extends StatelessWidget {
const MyMaterialApp({Key? key}) : super(key: key);
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'MySearch App',
theme: ThemeData(
primarySwatch: Colors.green,
),
home: const MyHomePage(),
);
}
}
class MyHomePage extends StatelessWidget {
const MyHomePage({Key? key}) : super(key: key);
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: const Text('MySearch App'),
actions: [
// 导航到搜索页面
IconButton(
onPressed: () =>
Navigator.of(context).push(MaterialPageRoute(builder: (_) => const Searchpage())),
icon: const Icon(Icons.search))
],
),
);
}
}
class Searchpage extends StatefulWidget {
const Searchpage({Key? key}) : super(key: key);
[@override](/user/override)
_SearchpageState createState() => _SearchpageState();
}
class _SearchpageState extends State<Searchpage> {
Future<List<SearchResultItem>>? _futureSearchResultItem;
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
toolbarHeight: 0,
),
body: Container(
color: Colors.white,
child: Column(
children: <Widget>[
Container(
decoration: const BoxDecoration(boxShadow: <BoxShadow>[
BoxShadow(
color: Colors.black12,
blurRadius: 2.0,
offset: Offset(0.0, 0.75))
], color: Colors.white),
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Expanded(
flex: 10,
child: Center(
child: Padding(
padding: const EdgeInsets.fromLTRB(0, 4, 0, 4),
child: MySearchField(
searchIndex: 0,
searchSize: 50,
source: "www.mygov.bd",
textFieldConfiguration: TextFieldConfiguration(
autofocus: true,
style: DefaultTextStyle.of(context)
.style
.copyWith(
fontSize: 14,
fontStyle: FontStyle.normal,
color: const Color.fromRGBO(15, 17, 23, 1),
fontWeight: FontWeight.w500,
),
decoration: const InputDecoration(
border: InputBorder.none,
),
),
onSearchResultFound: (List<SearchResultItem> searchResult) {
_futureSearchResultItem =
Future<List<SearchResultItem>>.value(searchResult);
setState(() {});
},
),
),
)),
],
),
),
const SizedBox(
height: 10.0,
),
(_futureSearchResultItem == null)
? const Padding(
padding: EdgeInsets.all(8.0),
child: Text("Search Anything"),
)
: Flexible(
child: Container(
child: buildFutureBuilder(),
),
)
],
),
),
);
}
FutureBuilder<List<SearchResultItem>> buildFutureBuilder() {
return FutureBuilder<List<SearchResultItem>>(
future: _futureSearchResultItem,
builder: (context, snapshot) {
if (snapshot.hasData) {
return ListView.builder(
scrollDirection: Axis.vertical,
shrinkWrap: true,
itemCount: snapshot.data!.length,
itemBuilder: (context, index) {
SearchResultItem searchItem = snapshot.data![index];
return Container(
padding: const EdgeInsets.fromLTRB(8.0, 8.0, 8.0, 12.0),
color: Colors.white,
child: Column(children: <Widget>[
Row(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.start,
children: [
Container(
alignment: Alignment.center,
child: const Padding(
padding: EdgeInsets.fromLTRB(12, 4, 8, 0),
child: Icon(
Icons.receipt_rounded,
size: 16,
color: Color.fromRGBO(15, 17, 23, 0.4),
),
),
),
Flexible(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.start,
children: [
const SizedBox(
height: 4.0,
),
Align(
alignment: Alignment.centerLeft,
child: Text(
searchItem.name,
style: const TextStyle(
fontWeight: FontWeight.bold,
color: Colors.grey),
),
),
const SizedBox(
height: 4.0,
),
Align(
alignment: Alignment.centerLeft,
child: Text(
searchItem.service_id,
style: const TextStyle(
fontWeight: FontWeight.normal,
color: Colors.grey,
fontSize: 12),
textAlign: TextAlign.left,
),
),
const SizedBox(
height: 4.0,
),
Align(
alignment: Alignment.centerLeft,
child: Text(
"Department : ${searchItem.department}",
style: const TextStyle(
fontWeight: FontWeight.normal,
color: Colors.grey),
),
),
Align(
alignment: Alignment.centerLeft,
child: Text(
"Office : ${searchItem.office}",
style: const TextStyle(
fontWeight: FontWeight.normal,
color: Colors.grey),
),
),
Align(
alignment: Alignment.centerLeft,
child: Text(
"Service Sector : ${searchItem.service_sector}",
style: const TextStyle(
fontWeight: FontWeight.normal,
color: Colors.grey),
),
),
Align(
alignment: Alignment.centerLeft,
child: Text(
"Source : ${searchItem.source}",
style: const TextStyle(
fontWeight: FontWeight.normal,
color: Colors.grey),
),
),
],
),
)
],
)
]),
);
},
);
} else if (snapshot.hasError) {
return Text('${snapshot.error}');
}
return const CircularProgressIndicator();
},
);
}
}
更多关于Flutter搜索功能插件mysearch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搜索功能插件mysearch的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
mysearch 是一个用于 Flutter 的搜索功能插件，它可以帮助你在应用中轻松实现搜索功能。以下是使用 mysearch 插件的基本步骤：
1. 添加依赖
首先，你需要在 pubspec.yaml 文件中添加 mysearch 插件的依赖：
dependencies:
flutter:
sdk: flutter
mysearch: ^1.0.0 # 请使用最新版本
然后运行 flutter pub get 来获取依赖。
2. 导入包
在你的 Dart 文件中导入 mysearch 包：
import 'package:mysearch/mysearch.dart';
3. 使用 MySearch 组件
你可以使用 MySearch 组件来创建一个搜索框，并将其集成到你的应用中。以下是一个简单的示例：
import 'package:flutter/material.dart';
import 'package:mysearch/mysearch.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: SearchPage(),
);
}
}
class SearchPage extends StatefulWidget {
@override
_SearchPageState createState() => _SearchPageState();
}
class _SearchPageState extends State<SearchPage> {
List<String> _items = [
'Apple', 'Banana', 'Cherry', 'Date', 'Elderberry', 'Fig', 'Grape', 'Honeydew'
];
List<String> _filteredItems = [];
@override
void initState() {
super.initState();
_filteredItems = _items;
}
void _onSearch(String query) {
setState(() {
_filteredItems = _items
.where((item) => item.toLowerCase().contains(query.toLowerCase()))
.toList();
});
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Search Example'),
),
body: Column(
children: [
MySearch(
onSearch: _onSearch,
hintText: 'Search...',
),
Expanded(
child: ListView.builder(
itemCount: _filteredItems.length,
itemBuilder: (context, index) {
return ListTile(
title: Text(_filteredItems[index]),
);
},
),
),
],
),
);
}
}
4. 解释代码
MySearch组件：这是一个搜索框组件，用户可以在这里输入搜索关键词。onSearch回调会在用户输入时触发，传递当前的搜索关键词。_onSearch方法：这个方法根据用户输入的关键词过滤列表数据，并更新_filteredItems。ListView.builder：用于显示过滤后的列表数据。
5. 自定义样式
你可以通过 MySearch 组件的参数来自定义搜索框的样式，例如 hintText、decoration 等。
MySearch(
onSearch: _onSearch,
hintText: 'Search...',
decoration: InputDecoration(
border: OutlineInputBorder(),
prefixIcon: Icon(Icons.search),
),
)