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android - Flutter:Web视图安全来源(Flutter: Web View Secure Origin)

I am getting an error with Flutter Webview (webview_flutter: ^0.1.2) when loading a Youtube Video, (though I initially thought its related to content security issue,) it seems to be an issue with secure origin on HTTPS.

(加载Youtube视频时,我遇到Flutter Webview错误(webview_flutter:^ 0.1.2)(尽管我最初认为它与内容安全性问题有关),这似乎是HTTPS来源安全的问题。)

On browser this is usually mitigated by moving to HTTPS domain, looking for a way to solve this on Mobile

(在浏览器上,通常可以通过移至HTTPS域来缓解这种情况,寻找在移动设备上解决此问题的方法)

             Container(
                child: WebView(
                         initialUrl: Uri.dataFromString(
                          '<html>'
                            '<meta http-equiv="Content-Security-Policy" content="default-src * gap:; script-src * 'unsafe-inline' 'unsafe-eval'; connect-src *; img-src * data: blob: android-webview-video-poster:; style-src * 'unsafe-inline';">'
//                            '<meta http-equiv="Content-Security-Policy" content="upgrade-insecure-requests">'
                            '<body><iframe src="https://www.youtube.com/embed/vlkNcHDFnGA"></iframe></body>'
                          '</html>', mimeType: 'text/html').toString(),
                      javascriptMode: JavascriptMode.unrestricted,                )),

I see the following in console: https://www.youtube.com/embed/vlkNcHDFnGA%22%3E%3C/iframe%3E%3C/body%3E%3C/html%3E (1)

(我在控制台中看到以下内容: https : //www.youtube.com/embed/vlkNcHDFnGA%22%3E%3C/iframe%3E%3C/body%3E%3C/html%3E (1))

The deviceorientation event is deprecated on insecure origins, and support will be removed in the future.

(deviceorientation事件在不安全的来源上已被弃用,将来会删除支持。)

You should consider switching your application to a secure origin, such as HTTPS.

(您应该考虑将应用程序切换到安全来源,例如HTTPS。)

See https://sites.google.com/a/chromium.org/dev/Home/chromium-security/deprecating-powerful-features-on-insecure-origins for more details.

(有关更多详细信息,请参见https://sites.google.com/a/chromium.org/dev/Home/chromium-security/deprecating-powerful-features-on-insecure-origins 。)

  ask by skjagini translate from so

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1 Answer

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by (71.8m points)

You can try my plugin flutter_inappwebview , which is a Flutter plugin that allows you to add inline WebViews or open an in-app browser window and has a lot of events, methods, and options to control WebViews.

(您可以尝试使用我的插件flutter_inappwebview ,它是Flutter插件,允许您添加内联WebView或打开应用程序内浏览器窗口,并且具有许多事件,方法和选项来控制WebView。)

To load an <iframe> in a WebView, you can load directly an HTML source using the initialData parameter of the InAppWebView widget or load an HTML file from the assets folder (see more here ) using the initialFile parameter.

(要在WebView中加载<iframe> ,您可以使用InAppWebView小部件的initialData参数直接加载HTML源,也可以使用initialFile参数从资产文件夹(请参见此处 )加载HTML文件。)

Full example using the initialData parameter and your youtube link:

(使用initialData参数和您的youtube链接的完整示例:)

import 'dart:async';

import 'package:flutter/material.dart';

import 'package:flutter_inappwebview/flutter_inappwebview.dart';

Future main() async {
  runApp(new MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}

class _MyAppState extends State<MyApp> {

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

  @override
  void dispose() {
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        home: InAppWebViewPage()
    );
  }
}

class InAppWebViewPage extends StatefulWidget {
  @override
  _InAppWebViewPageState createState() => new _InAppWebViewPageState();
}

class _InAppWebViewPageState extends State<InAppWebViewPage> {
  InAppWebViewController webView;
  String iframeUrl = "https://www.youtube.com/embed/vlkNcHDFnGA";

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
            title: Text("InAppWebView")
        ),
        body: Container(
            child: Column(children: <Widget>[
              Expanded(
                child: Container(
                  child: InAppWebView(
                    initialData: InAppWebViewInitialData(
                        data: """
<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
        <meta http-equiv="X-UA-Compatible" content="ie=edge">
        <title>Flutter InAppWebView</title>
    </head>
    <body>
        <iframe src="$iframeUrl" width="100%" height="100%" frameborder="0" allowfullscreen></iframe>
    </body>
</html>"""
                    ),
                    initialHeaders: {},
                    initialOptions: InAppWebViewWidgetOptions(
                      inAppWebViewOptions: InAppWebViewOptions(
                        debuggingEnabled: true,
                      ),
                    ),
                    onWebViewCreated: (InAppWebViewController controller) {
                      webView = controller;
                    },
                    onLoadStart: (InAppWebViewController controller, String url) {

                    },
                    onLoadStop: (InAppWebViewController controller, String url) {

                    },
                  ),
                ),
              ),
            ]))
    );
  }
}

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