Flutter网络功能增强插件tc_network的使用

本示例展示了如何使用Flutter网络功能增强插件tc_network。通过该插件，你可以实现网络请求、文件下载、设置请求参数格式等功能。

获取开始

首先，确保你已经添加了tc_network依赖到你的pubspec.yaml文件中：

dependencies:
  tc_network: ^1.0.0

然后运行flutter pub get以安装该依赖。

示例代码

main.dart

import 'dart:ffi';

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

import 'package:flutter/services.dart';
import 'package:tc_network/tc_network.dart'; // 使用tc_network插件

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

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

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _text = "测试网络"; // 显示网络状态或结果
  final _networkPlugin = Network(); // 初始化网络插件实例

  [@override](/user/override)
  void initState() {
    super.initState();
    // 初始化时可以调用一些方法来检查初始状态
  }

  Future<void> reachabilityStatusChangeBlock() async {
    try {
      _text = await _networkPlugin.reachabilityStatusChangeBlock() ?? 'reachabilityStatusChangeBlock 错误';
    } on PlatformException {
      _text = '获取网络状态失败';
    }
    setState(() {});
  }

  Future<void> cancelAllRequest() async {
    try {
      _text = await _networkPlugin.cancelAllRequest() ?? 'cancelAllRequest 错误';
    } on PlatformException {
      _text = '取消所有请求失败';
    }
    setState(() {});
  }

  Future<void> cancelRequestWithURL() async {
    try {
      _text = await _networkPlugin.cancelRequestWithURL({"url": "testUrl"}) ?? 'cancelRequestWithURL 错误';
    } on PlatformException {}
    setState(() {});
  }

  Future<void> openLog() async {
    try {
      _text = await _networkPlugin.openLog() ?? 'openLog 错误';
    } on PlatformException {}
    setState(() {});
  }

  Future<void> closeLog() async {
    try {
      _text = await _networkPlugin.closeLog() ?? 'closeLog 错误';
    } on PlatformException {}
    setState(() {});
  }

  Future<void> requestWithMethod() async {
    try {
      _text = await _networkPlugin.requestWithMethod({
        "methodType": "GET",
        "url": "https://reqres.in/api/users",
        'params': {"p1": "p1", "p2": "p2"},
        "header": {"h1": "h1", "h2": "h2"}
      }) ?? 'requestWithMethod 错误';
    } on PlatformException {}
    setState(() {});
  }

  Future<void> downloadWithURL() async {
    try {
      _text = await _networkPlugin.downloadWithURL({
        "url": "https://reqres.in/api/users",
        'params': {"p1": "p1", "p2": "p2"},
        "header": {"h1": "h1", "h2": "h2"}
      }) ?? "downloadWithURL 错误";
    } on PlatformException {}
    setState(() {});
  }

  Future<void> setRequestSerializer() async {
    try {
      _text = await _networkPlugin.setRequestSerializer("HTTP") ?? "setRequestSerializer 错误";
    } on PlatformException {}
    setState(() {});
  }

  Future<void> setResponseSerializer() async {
    try {
      _text = await _networkPlugin.setResponseSerializer("HTTP") ?? "setResponseSerializer 错误";
    } on PlatformException {}
    setState(() {});
  }

  Future<void> setTimeoutInterval() async {
    try {
      double time = 30;
      _text = await _networkPlugin.setTimeoutInterval(time) ?? "setTimeoutInterval 错误";
    } on PlatformException {}
    setState(() {});
  }

  Future<void> setHTTPHeaderValue() async {
    try {
      _text = await _networkPlugin.setHTTPHeaderValue({
        "param1": "param1",
        "param2": "param2"
      }) ?? "setHTTPHeaderValue 错误";
    } on PlatformException {}
    setState(() {});
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        backgroundColor: Colors.yellow,
        appBar: AppBar(
          title: const Text('插件示例应用'),
        ),
        body: Container(
          width: MediaQuery.of(context).size.width,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.center,
            mainAxisSize: MainAxisSize.max,
            children: [
              Container(
                width: 300.0,
                height: 100.0,
                color: Colors.red,
                child: Center(
                  child: Text(
                    _text,
                    style: TextStyle(
                      fontSize: 20.0,
                      color: Colors.black,
                    ),
                  ),
                ),
              ),
              SizedBox(height: 30,),
              ElevatedButton(
                child: Text("网络监听"),
                onPressed: () {
                  reachabilityStatusChangeBlock();
                },
              ),
              ElevatedButton(
                child: Text("取消所有HTTP请求"),
                onPressed: () {
                  cancelAllRequest();
                },
              ),
              ElevatedButton(
                child: Text("取消指定URL的HTTP请求"),
                onPressed: () {
                  cancelRequestWithURL();
                },
              ),
              ElevatedButton(
                child: Text("开启日志打印 (Debug级别)"),
                onPressed: () {
                  openLog();
                },
              ),
              ElevatedButton(
                child: Text("关闭日志打印,默认关闭"),
                onPressed: () {
                  closeLog();
                },
              ),
              ElevatedButton(
                child: Text("发起网络请求"),
                onPressed: () {
                  requestWithMethod();
                },
              ),
              ElevatedButton(
                child: Text("下载文件"),
                onPressed: () {
                  downloadWithURL();
                },
              ),
              ElevatedButton(
                child: Text("设置网络请求参数的格式:默认为JSON格式"),
                onPressed: () {
                  setRequestSerializer();
                },
              ),
              ElevatedButton(
                child: Text("设置服务器响应数据格式:默认为JSON格式"),
                onPressed: () {
                  setResponseSerializer();
                },
              ),
              ElevatedButton(
                child: Text("设置服务器响应时间 默认30s"),
                onPressed: () {
                  setTimeoutInterval();
                },
              ),
              ElevatedButton(
                child: Text("设置请求头"),
                onPressed: () {
                  setHTTPHeaderValue();
                },
              ),
            ],
          ),
        ),
      ),
    );
  }
}