WebView抖动:初始化URL时无法将'cookie'设置为标头 [英] WebView flutter: Failed to set the 'cookie' into header when initialize url

问题描述

我正在使用 webview_flutter:^ 1.0.7 在我的应用程序上显示网页:

I am using webview_flutter: ^1.0.7 to shows web page on my application:

WebView(
     initialMediaPlaybackPolicy: AutoMediaPlaybackPolicy.always_allow,
     javascriptMode: JavascriptMode.unrestricted,
     onWebViewCreated: (webViewController) async {
            _controller.complete(webViewController);

在initState方法中，我有以下代码:

in initState method i have these codes:

  @override
  void initState() {
    super.initState();
    cookieManagerr.clearCookies();    
    _controller.future.then((controller) async {
      wvc = controller;
      // wvc.evaluateJavascript('document.cookie = "SESSION-Test=token";');
      Map<String, String> header = {'Cookie': 'ASP.NET_SessionId=222'};
      wvc.loadUrl(
        '${widget.url}?BranchName=&latitude=${latitude}&longitude=${longitude}',
        headers: header,
      );
    });
  }

但运行后未向标题添加任何内容.

but after running nothing is added to header.

如果我将代码更改为此:

If i change my code to this:

 WebView(
                initialMediaPlaybackPolicy:
                    AutoMediaPlaybackPolicy.always_allow,
                initialUrl:
                    '${widget.url}?BranchName=&latitude=${latitude}&longitude=${longitude}',
                javascriptMode: JavascriptMode.unrestricted,
                onWebViewCreated: (webViewController) async {
                  webViewController.evaluateJavascript(
                      'document.cookie = "SESSION-Test=token";');

我收到此错误:

I/chromium( 6239): [INFO:CONSOLE(1)] "Uncaught SecurityError: Failed to set the 'cookie' property on 'Document': Access is denied for this document.", source:  (1)
D/EGL_emulation( 6239): eglMakeCurrent: 0xd2aea420: ver 2 0 (tinfo 0xb48e41f0)
I/chromium( 6239): [INFO:CONSOLE(17932)] "You are using OSRM's demo server. Please note that it is **NOT SUITABLE FOR PRODUCTION USE**.

如何设置可在ios和android上运行的cookie?

How to set cookie that works on ios and android?

推荐答案

首先，也许您的html有问题.例如， https://github.com/js-cookie/js-cookie/issues/531 说，如果脚本是在具有沙箱属性的iframe中执行的，则可能会引发错误.

Firstly, maybe there is problem with your html. For example, https://github.com/js-cookie/js-cookie/issues/531 says that if the script is executed inside an iframe with a sandbox attribute, it can throw an error.

第二，如何尝试使用另一种方式代替cookie?例如，要将一些变量从flutter传递到javascript，您可以:

Secondly, what about trying to use another way instead of cookies? For example, to pass some variables to javascript from flutter, you can:

1. webViewController.evaluateJavascript('window.hello ='world';;')
2. 或者，您可以 webViewController.evaluateJavascript('window.your_js_method("world");')

这篇关于WebView抖动:初始化URL时无法将'cookie'设置为标头的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！