Flutter网络相关功能插件jio

Flutter网络相关功能插件jio_inet的使用

插件介绍

jio_inet 是一个用于Flutter项目的插件，它可以在Android和iOS平台上检查互联网连接状态，并监听互联网连接状态的变化。

特性

当前网络连接检查
监听当前网络连接变化

性能指标

构建状态：CI构建的当前状态。
测试覆盖率：集成测试覆盖率信息（如果有集成测试覆盖工具）。
构建时间：CI的平均构建时间。

开始使用

依赖项：在pubspec.yaml文件中添加依赖项。

dependencies:
  flutter:
    sdk: flutter
  jio_inet:

使用示例

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:developer' as developer;

import 'package:flutter/services.dart';
import 'package:jio_inet/jio_inet.dart';

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

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

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'INet example',
      theme: ThemeData(
        useMaterial3: true,
        colorSchemeSeed: const Color(0xFF0000AA),
      ),
      home: const HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  const HomePage({super.key});

  [@override](/user/override)
  State&lt;HomePage&gt; createState() =&gt; _HomePageState();
}

class _HomePageState extends State&lt;HomePage&gt; {
  final _jioInetPlugin = JioInet();
  List&lt;INetResult&gt; _networkStatus = [INetResult.none];
  late StreamSubscription&lt;List&lt;INetResult&gt;&gt; _iNetSubscription;

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();

    _iNetSubscription =
        _jioInetPlugin.iNetStatus.listen(_updateConnectionStatus);
  }

  Future&lt;void&gt; _updateConnectionStatus(List&lt;INetResult&gt; result) async {
    setState(() {
      _networkStatus = result;
    });
    developer.log('Network-changed: $_networkStatus');
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future&lt;void&gt; initPlatformState() async {
    late List&lt;INetResult&gt; result;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      result = await _jioInetPlugin.iNetType();
      debugPrint('iNetList::${result.toString()}');

      String platformInfo = await _jioInetPlugin.getPlatformVersion() ??
          'Unknown platform version';
      developer.log('PlatformInfo::$platformInfo');
    } on PlatformException catch (e) {
      developer.log('Failed to check iNet.', error: e);
      return;
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    // if (!mounted) return;
    if (!mounted) {
      return Future.value(null);
    }

    return _updateConnectionStatus(result);
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('INet example'), elevation: 4),
      body: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          const Spacer(flex: 2),
          Text(
            'Network listener:',
            style: Theme.of(context).textTheme.headlineMedium,
          ),
          const Divider(),
          ListView(
            shrinkWrap: true,
            children: List.generate(
                _networkStatus.length,
                (index) =&gt; Center(
                      child: Text(
                        _networkStatus[index].toString(),
                        style: Theme.of(context).textTheme.headlineSmall,
                      ),
                    )),
          ),
          const Spacer(flex: 2),
        ],
      ),
    );
  }

  [@override](/user/override)
  void dispose() {
    super.dispose();
    _iNetSubscription.cancel();
  }
}

当前网络连接检查

import 'package:jio_inet/jio_inet.dart';

final _jioInetPlugin = JioInet();
List&lt;INetResult&gt; _networkStatus = [INetResult.none];

[@override](/user/override)
void initState() async {
  super.initState();
  _getNetworkConnection();
}

Future&lt;void&gt; _getNetworkConnection() async {
  try {
    _networkStatus = await _jioInetPlugin.iNetType(); // current network connection result
    print('${_networkStatus.toString()}');
  } on PlatformException catch (e) {
    developer.log('Failed to check iNet.', error: e);
  }
}

监听网络连接变化

import 'dart:async';
import 'package:jio_inet/jio_inet.dart';

final _jioInetPlugin = JioInet();
late StreamSubscription&lt;List&lt;INetResult&gt;&gt; _iNetSubscription;

[@override](/user/override)
void initState() {
  super.initState();
  _iNetSubscription =
      _jioInetPlugin.iNetStatus.listen((List&lt;INetResult&gt; result) {
        print('iNetResult::${result.toString()}');
      });
}

[@override](/user/override)
void dispose() {
  super.dispose();
  _iNetSubscription.cancel();
}

完整示例代码

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:developer' as developer;

import 'package:flutter/services.dart';
import 'package:jio_inet/jio_inet.dart';

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

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

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'INet example',
      theme: ThemeData(
        useMaterial3: true,
        colorSchemeSeed: const Color(0xFF0000AA),
      ),
      home: const HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  const HomePage({super.key});

  [@override](/user/override)
  State&lt;HomePage&gt; createState() =&gt; _HomePageState();
}

class _HomePageState extends State&lt;HomePage&gt; {
  final _jioInetPlugin = JioInet();
  List&lt;INetResult&gt; _networkStatus = [INetResult.none];
  late StreamSubscription&lt;List&lt;INetResult&gt;&gt; _iNetSubscription;

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();

    _iNetSubscription =
        _jioInetPlugin.iNetStatus.listen(_updateConnectionStatus);
  }

  Future&lt;void&gt; _updateConnectionStatus(List&lt;INetResult&gt; result) async {
    setState(() {
      _networkStatus = result;
    });
    developer.log('Network-changed: $_networkStatus');
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future&lt;void&gt; initPlatformState() async {
    late List&lt;INetResult&gt; result;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      result = await _jioInetPlugin.iNetType();
      debugPrint('iNetList::${result.toString()}');

      String platformInfo = await _jioInetPlugin.getPlatformVersion() ??
          'Unknown platform version';
      developer.log('PlatformInfo::$platformInfo');
    } on PlatformException catch (e) {
      developer.log('Failed to check iNet.', error: e);
      return;
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    // if (!mounted) return;
    if (!mounted) {
      return Future.value(null);
    }

    return _updateConnectionStatus(result);
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('INet example'), elevation: 4),
      body: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          const Spacer(flex: 2),
          Text(
            'Network listener:',
            style: Theme.of(context).textTheme.headlineMedium,
          ),
          const Divider(),
          ListView(
            shrinkWrap: true,
            children: List.generate(
                _networkStatus.length,
                (index) =&gt; Center(
                      child: Text(
                        _networkStatus[index].toString(),
                        style: Theme.of(context).textTheme.headlineSmall,
                      ),
                    )),
          ),
          const Spacer(flex: 2),
        ],
      ),
    );
  }

  [@override](/user/override)
  void dispose() {
    super.dispose();
    _iNetSubscription.cancel();
  }
}

更多关于Flutter网络相关功能插件jio_inet的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html

h691938207 1楼

更多关于Flutter网络相关功能插件jio_inet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jio_inet插件来实现网络相关功能的代码示例。jio_inet是一个用于处理网络请求的Flutter插件，支持GET、POST等HTTP请求方法。

首先，你需要在你的Flutter项目的pubspec.yaml文件中添加jio_inet依赖：

dependencies:
  flutter:
    sdk: flutter
  jio_inet: ^最新版本号  # 请替换为实际可用的最新版本号

然后运行flutter pub get来安装依赖。

接下来，是一个简单的代码示例，展示如何使用jio_inet来进行GET和POST请求。

1. 导入`jio_inet`插件

在你的Dart文件中（例如main.dart），首先导入jio_inet：

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

2. 发送GET请求

下面是一个发送GET请求并处理响应的示例：

void _sendGetRequest() async {
  try {
    var response = await JioInet.get("https://api.example.com/data");
    print("GET Response: ${response.body}");
    // 你可以在这里处理响应数据，例如更新UI
  } catch (e) {
    print("GET Error: $e");
  }
}

3. 发送POST请求

下面是一个发送POST请求并处理响应的示例：

void _sendPostRequest() async {
  try {
    var data = {
      "key1": "value1",
      "key2": "value2"
    };
    var response = await JioInet.post("https://api.example.com/submit", data);
    print("POST Response: ${response.body}");
    // 你可以在这里处理响应数据，例如更新UI
  } catch (e) {
    print("POST Error: $e");
  }
}

4. 在UI中调用这些函数

你可以将这些函数绑定到按钮点击事件或其他UI交互中。例如：

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('JioInet Example'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              ElevatedButton(
                onPressed: _sendGetRequest,
                child: Text('Send GET Request'),
              ),
              ElevatedButton(
                onPressed: _sendPostRequest,
                child: Text('Send POST Request'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

在这个示例中，我们创建了一个简单的Flutter应用，其中有两个按钮，分别用于发送GET和POST请求。当点击按钮时，会调用相应的函数来发送请求，并在控制台中打印响应或错误信息。

请注意，实际使用时你需要将https://api.example.com/data和https://api.example.com/submit替换为有效的API端点。

希望这个示例能够帮助你理解如何在Flutter项目中使用jio_inet插件进行网络请求。

Flutter网络相关功能插件jio_inet的使用