Android Question WebView fails to load page with 403 error

[Alessandro71]

I have an URL with a strange behavior

Previsioni per Localita

it's getting loaded correctly in Chrome, but it gets a 403 error in a WebView
i suspect the web server is expecting some header for a proper browser request
i already tried setting a standard user-agent but with no different outcome

            Dim m As Map
            m.Initialize
            m.Put("User-Agent","Mozilla/5.0 (Windows; U; Windows NT 6.1; zh_CN) AppleWebKit/534.7 (KHTML, like Gecko) Chrome/7.0 baidubrowser/1.x Safari/534.7")
            Dim r As Reflector
            r.Target = WV_meteowidget
            r.RunMethod4("loadUrl", Array As Object(url, m), Array As String("java.lang.String", "java.util.Map"))

 

[JohnC]

Try this...

1) Add the chrome client to the webview as mentioned in my signature tip #1
2) Load the url into webview using it's regular .LoadURL method instead of using relfection:

Wv.LoadURL = UrlToLoad

3) Yes, my above suggestion does not set the useragent, but first see if it works as is, if not then you can use the webviewsettings lib to set it:

    Dim UA As String
    UA = useragentstring
    wvs.setUserAgentString(wv,UA)

*** Also, I noticed that you didn't set the "URL" variable to anything in the code you posted if that might be the cause of your error.

 

[Alessandro71]

1) Add the chrome client to the webview as mentioned in my signature tip #1

looks like the addWebChromeClient method is not available in the WebViewExtras2 library i'm using

2) Load the url into webview using it's regular .LoadURL method instead of using relfection:

yes, that was the first attempt, which didn't worked
the quoted code is after some attempts
and BTW, the "url" variable is correctly set before

 

[JohnC]

looks like the addWebChromeClient method is not available in the WebViewExtras2 library i'm using

Well, that's your best bet to get this working, so I would download the version (1.42) from this page and see if adding the chrome client will work:

WebViewExtras

Hi all. WebViewExtras is my latest library. It's a much updated version of JSInterface. WebViewExtras exposes more of the available native Android WebView methods to your B4A application: addJavascriptInterface(webView1 As WebView, interfaceName As String) Add a javascript interface to...

www.b4x.com

 

[Alessandro71]

well, it actually hasn't worked, because I still get the same 403 error, but using the WebViewExtras capability of extracting resulting HTML, I was able to intercept the error and open a full browser instead
thank you

 

[JohnC]

This is a long shot (because normally you would have received a different error message if this was the cause), but try adding this line to your apps manifest:

CreateResourceFromFile(Macro, Core.NetworkClearText)

Since the URL that you are trying to navigate to is NOT SSL (Just HTTP), this setting allows non-ssl connections.

 

[Alessandro71]

Since the URL that you are trying to navigate to is NOT SSL (Just HTTP), this setting allows non-ssl connections.

already did, but it's not the case

 

[JohnC]

well, I'm out of ideas