我需要在flutter应用程序的webview中打开http站点，但在adnroid中无法正常工作。对于IOS，我在info.plist文件中添加了密钥，但我找不到Android的解决方案。有没有办法允许打开不安全的网站？
我正在使用webview_flutter包
我试图添加以下xml文件，以允许不安全的网站，并提供它的路径AndroidManifest文件，但它没有工作。

android/app/src/main/res/xml/network_security_config.xml

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <base-config cleartextTrafficPermitted="true">
        <trust-anchors>
            <!-- You can add trusted certificates here if needed -->
        </trust-anchors>
    </base-config>
</network-security-config>

这是我的manifest文件：

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.webview_demo">

<uses-permission android:name="android.permission.INTERNET" />
<application
    android:name="${applicationName}"
    android:icon="@mipmap/ic_launcher"
    android:label="webview_demo"
    android:networkSecurityConfig="@xml/network_security_config"
    android:usesCleartextTraffic="true">
    <activity
        android:name=".MainActivity"
        android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
        android:exported="true"
        android:hardwareAccelerated="true"
        android:launchMode="singleTop"
        android:theme="@style/LaunchTheme"
        android:windowSoftInputMode="adjustResize">
        <!-- Specifies an Android theme to apply to this Activity as soon as
             the Android process has started. This theme is visible to the user
             while the Flutter UI initializes. After that, this theme continues
             to determine the Window background behind the Flutter UI. -->
        <meta-data
            android:name="io.flutter.embedding.android.NormalTheme"
            android:resource="@style/NormalTheme" />
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <!-- Don't delete the meta-data below.
         This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
    <meta-data
        android:name="flutterEmbedding"
        android:value="2" />
</application>

我的webview代码：

import 'dart:developer';
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';

class WebviewScreen extends StatefulWidget {
  final String url;

  const WebviewScreen({Key? key, required this.url}) : super(key: key);

  @override
  State<WebviewScreen> createState() => _WebviewScreenState();
}

class _WebviewScreenState extends State<WebviewScreen> {
  WebViewController? webViewController;

  @override
  void initState() {
    super.initState();
    loadWebView();
  }

  loadWebView() {
    webViewController = WebViewController()
      ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..setBackgroundColor(Colors.white)
      ..setNavigationDelegate(
        NavigationDelegate(
          onPageStarted: (String url) {
            log('Page started loading: $url');
          },
          onProgress: (int progress) {
            log('WebView is loading (progress : $progress%)');
          },
          onPageFinished: (String url) {
            log('Page finished loading: $url');
          },
          onWebResourceError: (WebResourceError error) {
            log('Webview resource error $error');
          },
          onNavigationRequest: (NavigationRequest request) {
            if (request.url.contains("http:/")) {
              log("first redirection ${request.url}");
              return NavigationDecision.navigate;
            }
            return NavigationDecision.navigate;
          },
        ),
      )
      ..loadRequest(
        Uri.parse(widget.url),
      );
  }

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
        onWillPop: () async {
          return true;
        },
        child: Scaffold(
          appBar: AppBar(
            leading: const BackButton(),
            title: const Text('Webview'),
            centerTitle: true,
          ),
          body: SafeArea(
            bottom: false,
            child: Column(
              children: [
                Expanded(
                  child: WebViewWidget(
                    controller: webViewController!,
                  ),
                )
              ],
            ),
          ),
        ));
  }
}

enter code here