WebView flutter: Failed to set the 'cookie' into header when initialize url

Question

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);

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,
      );
    });
  }

but after running nothing is added to header.

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";');

I got this error:

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**.

How to set cookie that works on ios and android?

Answer 1

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.

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. or, you can webViewController.evaluateJavascript('window.your_js_method("world");')